74HC5555D,112

74HC5555 Programmable delay timer with oscillator Rev. 4 — 5 July 2018 1 Product data sheet General description The 74HC5555 is a precision programmable delay timer which consist of: • • • • • • • 24-stage binary counter integrated oscillator (using external timing components) retriggerable/non-retriggerable monostable automatic power-ON reset output control logic oscillator control logic overriding asynchronous master reset (MR). The 74HC5555 inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. 2 Features and benefits • • • • • • • • • • • • • • • • • Supply voltage range from 2.0 V to 6.0 V CMOS input levels Positive and negative edge triggered Retriggerable or non-retriggerable Programmable delay: – minimum: 100 ns – maximum: depends on input frequency and division ratio 24 Divide-by range of 2 to 2 Direct reset terminates output pulse Very low power consumption in triggered start mode 3 oscillator operating modes: – RC oscillator – Crystal oscillator – External oscillator Device is unaffected by variations in temperature and VCC when using an external oscillator Automatic power-ON reset Schmitt trigger action on both trigger inputs Direct drive for a power transistor High precision due to digital timing Complies with JEDEC standard no. 7 A ESD protection: – HBM EIA/JESD22-A114A exceeds 2000 V – MM EIA/JESD22-A115-A exceeds 200 V Specified from -40 °C to +85 °C and -40 °C to +125 °C 74HC5555 Nexperia Programmable delay timer with oscillator 3 Applications • • • • 4 Motor control Delay circuits Precision timing Domestic appliances Ordering information Table 1. Ordering information Type number 74HC5555D 5 Package Temperature range Name Description Version −40 °C to +125 °C SO16 plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 Functional diagram X/Y 10 11 12 13 2 3 14 1 6 1 2 0 4 8 15 RX CX Y = 15 !G + 16G17 17 & 4 CT = 0 CT = m ≥1 5 S I=0 15 CTRDIVm [T] Y=0 R V16 9 7 R R aaa-028555 Figure 1. IEC logic diagram 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 2 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 2 RTC 1 RS 10 S0 11 S1 12 S2 13 S3 CP 24 - STAGE COUNTER CD OSC 14 CON 15 MR 3 CTC POWER-ON RESET 4 A 5 B MONOSTABLE CIRCUITRY OUTPUT STAGE Q 9 Q 7 6 RTR/RTR aaa-028556 Figure 2. Functional diagram 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 3 / 28 74HC5555 Nexperia Programmable delay timer with oscillator CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CD CP Q CTC RTC RS OSC CON S3 S2 S1 S0 VCC Q CP CD MR RTR/RTR Q A Q B aaa-028557 Figure 3. Logic diagram 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 4 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 6 Pinning information 6.1 Pinning 74HC5555 RS 1 16 RTC 2 15 MR CTC 3 14 OSC CON A 4 13 S3 VCC B 5 12 S2 RTR/ RTR 6 11 S1 Q 7 10 S0 GND 8 9 Q aaa-028554 Figure 4. Pin configuration SOT109-1 (SO16) 6.2 Pin description Table 2. Pin description Symbol Pin Description RS 1 clock input/oscillator pin RTC 2 external resistor connection CTC 3 external capacitor connection A 4 trigger input (positive-edge triggered) B 5 trigger input (negative-edge triggered) RTR/RTR 6 retriggerable/non-retriggerable input (active HIGH/active LOW) Q 7 pulse output (active LOW) GND 8 ground (0 V) Q 9 pulse output (active HIGH) S0, S1, S2, S3 10, 11, 12, 13 programmable input OSC CON 14 oscillator control MR 15 master reset input (active HIGH) VCC 16 supply voltage 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 5 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 7 Functional description The oscillator configuration allows the design of RC or crystal oscillator circuits. The device can operate from an external clock signal applied to the RS input (RTC and CTC must not be connected). The oscillator frequency is determined by the external timing components (RT and CT), within the frequency range 1 Hz to 4 MHz (32 kHz to 20 MHz with crystal oscillator). The counter divides the frequency to obtain a long pulse duration. The 24-stage is digitally programmed via the select inputs (S0 to S3). Pin S3 can also be used to select the test mode, which is a convenient way of functionally testing the counter. See Section 7.1 The 74HC5555 is triggered on either the positive-edge, negative-edge or both. • Trigger pulse applied to input A for positive-edge triggering • Trigger pulse applied to input B for negative-edge triggering • Trigger pulse applied to inputs A and B (tied together) for both positive-edge and negative triggering. The Schmitt trigger action in the trigger inputs, transforms slowly changing input signals into sharply defined jitter-free output signals and provides the circuit with excellent noise immunity. The OSC CON input is used to select the oscillator mode, either continuously running (OSC CON = HIGH) or triggered start mode (OSC CON = LOW). The continuously running mode is selected where a start-up delay is an undesirable feature and the triggered start mode is selected where very low power consumption is the primary concern. The start of the programmed time delay occurs when output Q goes HIGH (in the triggered start mode, the previously disabled oscillator will start-up). After the programmed time delay, the flip-flop stages are reset and the output returns to its original state. An internal power-on reset is used to reset all flip-flop stages. The output pulse can be terminated by the asynchronous overriding master reset (MR), this results in all flip-flop stages being reset. The output signal is capable of driving a power transistor. The output time delay is calculated using the following formula (minimum time delay is 100 ns): Once triggered, the output width may be extended by retriggering the gated, active HIGH-going input A or the active LOW-going input B. By repeating this process, the output pulse period (Q = HIGH, Q = LOW) can be made as long as desired. This mode is selected by RTR/RTR = HIGH. A LOW on RTR/RTR makes, once triggered, the outputs (Q, Q) independent of further transitions of inputs A and B. 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 6 / 28 74HC5555 Nexperia Programmable delay timer with oscillator Table 3. Function table inputs [1] outputs MR A B Q Q H X X L H L ↑ X one HIGH level output pulse one LOW level output pulse L X ↓ one HIGH level output pulse one LOW level output pulse [1] H = HIGH voltage level L = LOW voltage level X = don't care ↑ = LOW-to-HIGH transition ↓ = HIGH-to-LOW transition. 7.1 Test mode Set S3 to a logic LOW level, this will divide the 24 stage counter into three, parallel clocking, 8-stage counters. Set S0, S1 and S2 to a logic HIGH level, this programs the 8 counter to divide-by 2 (256). Apply a trigger pulse and clock in 255 pulses, this sets all flip-flop stages to a logic HIGH level. Set S3 to a logic HIGH level, this causes the 24 counter to divide-by 2 . Clock one more pulse into the RS input, this causes a logic 0 to ripple through the counter and output Q/Q goes from HIGH-to-LOW level. This method of 24 testing the delay counter is faster than clocking in 2 (16 777 216) clock pulses. 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 7 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 7.2 Delay time selection Table 4. Delay time selection [1] Select inputs S3 output Q/Q (frequency dividing) S2 L S1 L L L L L L H L H L L H H L H H L L L H binary L L L L S0 H H L 2 2 2 2 4 2 3 8 2 4 16 2 5 32 2 6 64 2 7 128 8 256 L H H H 2 - - - - - H L H L L H L L H L L H H H L H H L H H H H H L H L H H H L H H decimal 1 - 2 17 131072 2 18 262144 2 19 524288 2 20 1048576 2 21 2097152 2 22 4194304 2 23 8388608 2 24 16777216 [1] H = HIGH voltage level L = LOW voltage level 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 RS MR A Q aaa-028558 4 Timing example shown for S3, S2, S1, S0 = 0011 (binary 2 , decimal 16). Figure 5. Timing diagram 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 8 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 8 Limiting values Table 5. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter VCC supply voltage IIK input clamping current IOK Min Max -0.5 +7 V VI < -0.5 V or VI > VCC + 0.5 V - ±20 mA output clamping current VO < -0.5 V or VO > VCC + 0.5 V - ±20 mA IO output current -0.5 V < VO < VCC + 0.5 V - ±35 mA ICC supply current - 70 mA IGND ground current -70 - mA Tstg storage temperature -65 +150 °C - 500 mW Ptot total power dissipation Conditions [1] SO16 Unit [1] Ptot derates linearly with 8 mW/K above 70 °C. 9 Recommended operating conditions Table 6. Recommended operating conditions Symbol Parameter Conditions Min Typ Max Unit 2.0 5.0 6.0 V VCC supply voltage VI input voltage 0 - VCC V VO output voltage 0 - VCC V Δt/ΔV input transition rise and fall rate VCC = 2.0 V - - 625 ns/V VCC = 4.5 V - 1.67 139 ns/V VCC = 6.0 V - - 83 ns/V -40 - +125 Tamb ambient temperature 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 °C © Nexperia B.V. 2018. All rights reserved. 9 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 10 Static characteristics Table 7. Static characteristics At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Tamb (°C) +25 VIH VIL VIH VIL HIGH-level input voltage LOW-level input voltage HIGH-level input voltage LOW-level input voltage 74HC5555 Product data sheet Unit −40 to +85 −40 to +125 Min Typ Max Min Max Min Max VCC = 2.0 V 1.5 1.2 - 1.5 - 1.5 - V VCC = 4.5 V 3.15 2.4 - 3.15 - 3.15 - V VCC = 6.0 V 4.2 3.2 - 4.2 - 4.2 - V VCC = 2.0 V - 0.8 0.5 - 0.5 - 0.5 V VCC = 4.5 V - 2.1 1.35 - 1.35 - 1.35 V VCC = 6.0 V - 2.8 1.8 - 1.8 - 1.8 V VCC = 2.0 V 1.7 - - 1.7 - 1.7 - V VCC = 4.5 V 3.6 - - 3.6 - 3.6 - V VCC = 6.0 V 4.8 - - 4.8 - 4.8 - V VCC = 2.0 V - - 0.3 - 0.3 - 0.3 V VCC = 4.5 V - - 0.9 - 0.9 - 0.9 V VCC = 6.0 V - - 1.2 - 1.2 - 1.2 V A, B, S0, S1, S2, S3, OSC CON, MR and RTR/RTR inputs A, B, S0, S1, S2, S3, OSC CON, MR and RTR/RTR inputs RS input RS input All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 10 / 28 74HC5555 Nexperia Programmable delay timer with oscillator Symbol Parameter Conditions Tamb (°C) +25 VOH VOL VOH VOL HIGH-level output voltage LOW-level output voltage HIGH-level output voltage LOW-level output voltage 74HC5555 Product data sheet Unit −40 to +85 −40 to +125 Min Typ Max Min Max Min Max VCC = 2.0 V; IO = -20 μA 1.9 2.0 - 1.9 - 1.9 - V VCC = 4.5 V; IO = -20 μA 4.4 4.5 - 4.4 - 4.4 - V VCC = 6.0 V; IO = -20 μA 5.9 6.0 - 5.9 - 5.9 - V VCC = 4.5 V; IO = -6.0 mA 3.98 4.32 - 3.84 - 3.7 - V VCC = 6.0 V; IO = -7.8 mA 5.48 5.81 - 5.34 - 5.2 - V VCC = 4.5 V; IO = -20 mA 3.3 - - 3.0 - 2.7 - V VCC = 6.0 V; IO = -20 mA 4.8 - - 4.5 - 4.2 - V VCC = 2.0 V; IO = 20 μA - 0.0 0.1 - 0.1 - 0.1 V VCC = 4.5 V; IO = 20 μA - 0.0 0.1 - 0.1 - 0.1 V VCC = 6.0 V; IO = 20 μA - 0.0 0.1 - 0.1 - 0.1 V VCC = 4.5 V; IO = 6.0 mA - 0.15 0.26 - 0.33 - 0.40 V VCC = 6.0 V; IO = 7.8 mA - 0.15 0.26 - 0.33 - 0.40 V VCC = 4.5 V; IO = 20 mA - - 0.9 - 1.14 - 1.34 V VCC = 6.0 V; IO = 25 mA - - 0.9 - 1.14 - 1.34 V VCC = 4.5 V; RS = VIH; OSC CON = VIH; IO = -3.2 mA 3.98 - - 3.84 - 3.7 - V VCC = 6.0 V; RS = VIH; OSC CON = VIH; IO = -4.2 mA 5.48 - - 5.34 - 5.2 - V VCC = 4.5 V; RS = VIL; OSC CON = VIL; untriggered; IO = 3.2 mA - - 0.26 - 0.33 - 0.4 V VCC = 6.0 V; RS = VIL; OSC CON = VIL; untriggered; IO = 4.2 mA - - 0.26 - 0.33 - 0.4 V Q and Q outputs Q and Q outputs CTC output CTC output All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 11 / 28 74HC5555 Nexperia Programmable delay timer with oscillator Symbol Parameter Conditions Tamb (°C) +25 VOH VOL HIGH-level output voltage LOW-level output voltage Unit −40 to +85 −40 to +125 Min Typ Max Min Max Min Max VCC = 4.5 V; RS = GND; OSC CON = VCC; IO = -2.6 mA 3.98 - - 3.84 - 3.7 - V VCC = 6.0 V; RS = GND; OSC CON = VCC; IO = -3.3 mA 5.48 - - 5.34 - 5.2 - V VCC = 4.5 V; RS = VCC; OSC CON = GND; untriggered; IO = -0.65 mA 3.98 - - 3.84 - 3.7 - V VCC = 6.0 V; RS = VCC; OSC CON = GND; untriggered; IO = -0.85 mA 5.48 - - 5.34 - 5.2 - V VCC = 2.0 V; RS = VCC; OSC CON = VCC; IO = -20 μA 1.9 2.0 - 1.9 - 1.9 - V VCC = 4.5 V; RS = VCC; OSC CON = VCC; IO = -20 μA 4.4 4.5 - 4.4 - 4.4 - V VCC = 6.0 V; RS = VCC; OSC CON = VCC; IO = -20 μA 5.9 6.0 - 5.9 - 5.9 - V VCC = 2.0 V; RS = VCC; OSC CON = GND; untriggered; IO = -20 μA 1.9 2.0 - 1.9 - 1.9 - V VCC = 4.5 V; RS = VCC; OSC CON = GND; untriggered; IO = -20 μA 4.4 4.5 - 4.4 - 4.4 - V VCC = 6.0 V; RS = VCC; OSC CON = GND; untriggered; IO = -20 μA 5.9 6.0 - 5.9 - 5.9 - V VCC = 4.5 V; RS = VCC; OSC CON = VCC; IO = 2.6 mA - - 0.26 - 0.33 - 0.4 V VCC = 6.0 V; RS = VCC; OSC CON = VCC; IO = 3.3 mA - - 0.26 - 0.33 - 0.4 V VCC = 2.0 V; RS = VCC; OSC CON = VCC; IO = 20 μA - 0.0 0.1 - 0.1 - 0.1 V VCC = 4.5 V; RS = VCC; OSC CON = VCC; IO = 20 μA - 0.0 0.1 - 0.1 - 0.1 V VCC = 6.0 V; RS = VCC; OSC CON = VCC; IO = 20 μA - 0.0 0.1 - 0.1 - 0.1 V RTC output RTC output II input leakage current VCC = 6 V; VI = VCC or GND - - ±0.1 - ±1.0 - ±1.0 μA ICC supply current - - 8.0 - 80.0 - 160.0 μA CI input capacitance - 3.5 - - - - - pF 74HC5555 Product data sheet VCC = 6.0 V; VI = VCC or GND; IO = 0 A All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 12 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 11 Dynamic characteristics Table 8. Dynamic characteristics Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit, see Figure 11. Symbol Parameter Conditions Tamb (°C) +25 tpd Unit −40 to +85 −40 to +125 Min Typ Max Min Max Min Max VCC = 2.0 V - 77 240 - 300 - 360 ns VCC = 4.5 V - 28 48 - 60 - 72 ns VCC = 5 V; CL = 15 pF - 24 - - - - - ns VCC = 6.0 V - 22 41 - 51 - 61 ns VCC = 2.0 V - 61 185 - 230 - 280 ns VCC = 4.5 V - 22 37 - 46 - 56 ns VCC = 5 V; CL = 15 pF - 19 - - - - - ns - 18 31 - 39 - 48 ns VCC = 2.0 V - 83 250 - 315 - 375 ns VCC = 4.5 V - 30 50 - 63 - 75 ns VCC = 5 V; CL = 15 pF - 26 - - - - - ns - 24 43 - 54 - 64 ns VCC = 2.0 V - 19 75 - 95 - 110 ns VCC = 4.5 V - 7 15 - 19 - 22 ns VCC = 6.0 V - 6 13 - 16 - 19 ns propagation delay A, B to Q, Q; see Figure 6. [1] MR to Q, Q; see Figure 7 VCC = 6.0 V RS to Q, Q; see Figure 8 [2] VCC = 6.0 V tt transition time 74HC5555 Product data sheet Q, Q outputs; see Figure 6 [3] All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 13 / 28 74HC5555 Nexperia Programmable delay timer with oscillator Symbol Parameter Conditions Tamb (°C) +25 tW pulse witdh Unit −40 to +85 −40 to +125 Min Typ Max Min Max Min Max VCC = 2.0 V 70 17 - 90 - 105 - ns VCC = 4.5 V 14 6 - 18 - 21 - ns VCC = 6.0 V 12 5 - 15 - 18 - ns VCC = 2.0 V 70 19 - 90 - 105 - ns VCC = 4.5 V 14 7 - 18 - 21 - ns VCC = 6.0 V 12 5 - 15 - 18 - ns VCC = 2.0 V 80 25 - 100 - 120 - ns VCC = 4.5 V 16 9 - 20 - 24 - ns VCC = 6.0 V 14 7 - 17 - 20 - ns VCC = 2.0 V - 275 - - - - - ns VCC = 4.5 V - 100 - - - - - ns - 80 - - - - - ns VCC = 2.0 V - 0 - - - - - ns VCC = 4.5 V - 0 - - - - - ns VCC = 6.0 V - 0 - - - - - ns VCC = 2.0 V 5 - 1000 - - - - kΩ VCC = 5.0 V 1 - 1000 - - - - kΩ trigger; A = HIGH; B = LOW; see Figure 6 MR; HIGH; see Figure 7 clock RS; HIGH or LOW; see Figure 8 minimum output; Q = HIGH; Q = LOW; see Figure 6 VCC = 6.0 V trtrig REXT CEXT retrigger time external resistance [4] A; B; see Figure 10 external timing resistance; see Figure 15 external capacitor external timing capacitor; see Figure 15 74HC5555 Product data sheet VCC = 2.0 V; 50 no limits pF VCC = 5.0 V 50 no limits pF All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 14 / 28 74HC5555 Nexperia Programmable delay timer with oscillator Symbol Parameter Conditions Tamb (°C) +25 trec recovery time maximum frequency maximum frequency Max Min Max Min Max VCC = 2.0 V 120 39 - 150 - 180 - ns VCC = 4.5 V 24 14 - 30 - 36 - ns 20 11 - 26 - 31 - ns VCC = 2.0 V 2 5.9 - 1.8 - 1.3 - MHz VCC = 4.5 V 10 18 - 8 - 6.6 - MHz 12 21 - 10 - 8 - MHz VCC = 2.0 V 6 24.8 - 4.8 - 4 - MHz VCC = 4.5 V 30 75 - 24 - 20 - MHz 35 89 - 28 - 24 - MHz - 23 - - - - - pF MR to A; MR to B; see Figure 7 [5] clock pulse into RS; see Figure 8 [6] clock pulse into RS; see Figure 9 VCC = 6.0 V CPD −40 to +125 Typ VCC = 6.0 V fmax −40 to +85 Min VCC = 6.0 V fmax Unit power dissipation per buffer; VI = GND to VCC capacitance [7] [1] [2] [3] [4] tpd is the same as tPLH and tPHL One stage selected. tt is the same as tTLH and tTHL It is possible to retrigger directly after the trigger pulse, however the pulse will only be extended, if the time period exceeds the clock input cycle time divided by 2. [5] One stage selected. The termination of the output pulse remains synchronized with respect to the falling edge of the RS clock input. [6] One stage selected. The termination of the output pulse is no longer synchronized with respect to the falling edge of the RS clock input. [7] CPD is used to determine the dynamic power dissipation (PD in μW). 2 2 PD = CPD x VCC x fi x N + Σ(CL x VCC x fo) where: fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in pF; VCC = supply voltage in V; N = number of load switching outputs; 2 Σ(CL x VCC x fo) = sum of the outputs. 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 15 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 11.1 Waveforms and test circuit tW 90% B INPUT VM 10% 90% A INPUT VM GND 10% tW t THL t TLH 90% VM Q OUTPUT 10% t PHL t PLH tW 90% Q OUTPUT VM 10% t TLH t THL aaa-028559 Measurement points are given in Table 9 Figure 6. The triggering of the delay timer by input A or B with respective propagation delays, the minimum pulse widths of the trigger inputs A and B, the output pulse width and output transition times. 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 16 / 28 74HC5555 Nexperia Programmable delay timer with oscillator VM MR INPUT tW t rec A INPUT VM t rec B INPUT VM t PLH VM Q OUTPUT t PHL Q OUTPUT VM aaa-028560 Measurement points are given in Table 9 Figure 7. The master reset (MR) pulse width, the master reset to outputs (Q and Q) propagation delays and the master reset to trigger inputs (A and B) recovery time. 1/f max RS INPUT 1 V 2 CC tW tPHL VM Q OUTPUT t PLH Q OUTPUT VM aaa-028561 Measurement points are given in Table 9 Figure 8. The clock (RS) to outputs (Q and Q) propagation delays, the clock pulse width and the maximum clock frequency. 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 17 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 1/f max RS INPUT VM t PHL VM Q OUTPUT t PLH VM Q OUTPUT aaa-028569 Measurement points are given in Table 9 Output waveforms are not synchronized with respect to the RS waveform Figure 9. The clock (RS) to outputs (Q and Q) propagation delays and the maximum clock frequency. A INPUT tW B INPUT trtrig tW Q OUTPUT tW tW tW aaa-028562 RTR/RTR = HIGH Figure 10. Output pulse control using retrigger pulse. Table 9. Measurement points Output Input VI VM VM GND to VCC 0.5VCC 0.5VCC 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 18 / 28 74HC5555 Nexperia Programmable delay timer with oscillator VI tW 90 % negative pulse VM VM 10 % GND VI tf tr tr tf 90 % positive pulse VM VM 10 % GND tW VCC VI G DUT VO RT CL 001aah768 Test data is given in Table 10. Definitions for test circuit: RT = Termination resistance; should be equal to output impedance Zo of the pulse generator. CL = Load capacitance including jig and probe capacitance. Figure 11. Test circuit for measuring switching times Table 10. Test data Input Load VI tr, tf CL GND to VCC 6 ns 15 pF, 50 pF 12 Application information aaa-028564 14 gfs (mA/V) max. 12 typ. 10 Rbias = 560 kΩ 8 min. VCC 6 0.47 µF vi (f = 1 kHz) input output 100 µF 4 A io GND aaa-028563 gfs = Δio/Δvi at vo is constant (see Figure 13) and MR = LOW. Figure 12. Test set-up for measuring forward transconductance 74HC5555 Product data sheet 2 0 1 2 3 4 5 VCC (V) 6 gfs as a function of the supply voltage at VCC at Tamb = 25 °C. Figure 13. Typical forward transconductance All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 19 / 28 74HC5555 Nexperia Programmable delay timer with oscillator MR (from logic) 1 RS C2 RTC CTC 2 3 Rt R2 Ct aaa-028566 Typical formula for oscillator frequency: Figure 14. Example of an RC oscillator aaa-028565 105 aaa-028577 105 fosc (Hz) fosc (Hz) 104 104 103 103 102 102 10 103 104 105 a. Rt curve at Ct = 1 nF; R2 = 2 x Rt. VCC = 2 V to 6 V; Tamb = 25 °C. Rt ( ) 10 10-4 106 10-3 10-2 Ct ( F) 10-1 b. Ct curve at Rt = 100 kΩ; R2 = 200 kΩ. VCC = 2 V to 6 V; Tamb = 25 °C. Figure 15. RC oscillator frequency as a function of Rt and Ct. 12.1 Timing Component Limitations The oscillator frequency is mainly determined by RtCt, provided R2 ≈ 2Rt and R2C2 50 pF, up to any practical value, 10 kΩ < Rt < 1 MΩ. In order to avoid start-up problems, Rt >> 1 kΩ. 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 20 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 12.2 Typical Crystal Oscillator In Figure 16, R2 is the power limiting resistor. For starting and maintaining oscillation a minimum transconductance is necessary, so R2 should not be too large. A practical value for R2 is 2.2 kΩ. Above 14 MHz it is recommended replacement of R2 by a capacitor with a typical value of 35 pF. 12.3 Accuracy Device accuracy is very precise for long time delays and has an accuracy of better than 1% for short time delays (1% applies to values ≥ 400 ns). Tolerances are dependent on the external components used, either RC network or crystal oscillator. 12.4 Start-up Using External Clock The start of the timing pulse is initiated directly by the trigger pulse (asynchronously with respect to the oscillator clock). Triggering on a clock HIGH or clock LOW results in the following: • clock = HIGH; the timing pulse may be lengthened by a maximum of tW/2 (tW = clock pulse width). • clock = LOW; the timing pulse may be shortened by a maximum of tW/2 (tW = clock pulse width). This effect can be minimized by selecting more delay stages. When using only one or two delay stages, it is recommended to use an external time base that is synchronized with the negative-edge of the clock. 12.5 Start-up Using RC Oscillator The first clock cycle is ≈ 35% of a time period too long. This effect can also be minimized by selecting more delay stages. 12.6 Start-up Using Crystal Oscillator A crystal oscillator requires at least two clock cycles to start-up plus an unspecified period (ms) before the amplitude of the clock signal increases to its expected level. Although this device also operates at lower clock amplitudes, it is recommended to select the continuously running mode (OSC CON = HIGH) to prevent start-up delays. 12.7 Termination of the Timing Pulse The end of the timing pulse is synchronized with the falling edge of the oscillator clock. The timing pulse may lose synchronization under the following conditions: • high clock frequency and large number of stages are selected. This depends on the dynamic relationship that exists between the clock frequency and the ripple through delay of the subsequent stages. 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 21 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 12.8 Synchronization When frequencies higher than those specified in Table 11 are used, the termination of timing pulse will lose synchronization with the falling edge of the oscillator. The unsynchronized timing pulse introduces errors, which can be minimized by increasing the number of stages used e.g. a 20 MHz clock frequency using all 24 stages will result in a frequency division of 16 777 225 instead of 16 777 216, an error of 0.0005%. The amount of error increases at high clock frequencies as the number of stages decrease. A clock frequency of 40 MHz and 4 stages selected results in a division of 18 instead of 16, a 12.5% error. Application example: If a 400 ns timing pulse was required it would be more accurate to utilize a 5 MHz clock frequency using 1 stage or a 10 MHz clock frequency using 2 stages (due to synchronization with falling edge of the oscillator) than a 40 MHz clock frequency and 4 stages (synchronization is lost). Table 11. Synchronization limits 74HC5555 Product data sheet Number of stages selected Clock frequency (typical) 1 18 MHz 2 14 MHz 3 11 MHz 4 9.6 MHz 5 8.3 MHz 6 7.3 MHz 7 6.6 MHz 8 6 MHz - - 17 3.2 MHz 18 3.0 MHz 19 2.9 MHz 20 2.8 MHz 21 2.7 MHz 22 2.6 MHz 23 2.5 MHz 24 2.4 MHz All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 22 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 12.9 Minimum Output Pulse Width The minimum output pulse width is determined by the minimum clock pulse width, plus the maximum propagation delay of A, B to Q. The rising edge of Q is dominated by the A, B to Q propagation delay, while the falling edge of Q is dominated by RS to Q propagation delay. These propagation delays are not equal. The RS to Q propagation delay is some what longer, resulting in inaccurate outputs for extremely short pulses. The propagation delays are listed in the Dynamic characteristics. With these numbers it is possible to calculate the maximum deviation (an example is shown in Figure 17). Figure 17 is valid for an external clock where the trigger is synchronized to the falling edge of the clock only. The graph shows that the minimum programmed pulse width of 100 ns is: • minimum of 4% too long • typically 7% too long • maximum of 10% too long. MR (from logic) 1 RS RTC 2 Rbias 100 kΩ to 1 MΩ 22 to 37 pF C3 R2 2.2 kΩ C2 100 pF aaa-028567 Figure 16. External components configuration for a crystal oscillator. aaa-028568 40 deviation (%) 36 32 28 max. expected typ. expected min. expected 24 20 16 12 8 4 0 0 100 200 300 400 500 programmed time (ns) 600 VCC = 4.5 V Figure 17. Graphic representation of short time delay accuracy; one stage selected. 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 23 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 13 Package outline SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 D E A X c y HE v M A Z 16 9 Q A2 A (A 3) A1 pin 1 index θ Lp 1 L 8 e w M bp 0 2.5 detail X 5 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) mm 1.75 0.25 0.10 1.45 1.25 0.25 0.49 0.36 0.25 0.19 10.0 9.8 4.0 3.8 1.27 6.2 5.8 1.05 1.0 0.4 0.7 0.6 0.25 0.25 0.1 0.7 0.3 inches 0.069 0.010 0.057 0.004 0.049 0.01 0.019 0.0100 0.39 0.014 0.0075 0.38 0.16 0.15 0.05 0.039 0.016 0.028 0.020 0.01 0.01 0.004 0.028 0.012 0.244 0.041 0.228 θ o 8 o 0 Note 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. REFERENCES OUTLINE VERSION IEC JEDEC SOT109-1 076E07 MS-012 JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-19 Figure 18. Package outline SOT109-1 (SO16) 74HC5555 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 24 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 14 Abbreviations Table 12. Abbreviations Acronym Description CMOS Complementary Metal-Oxide Semiconductor DUT Device Under Test ESD ElectroStatic Discharge HBM Human Body Model MM Machine Model TTL Transistor-Transistor Logic 15 Revision history Table 13. Revision history Document ID Release date Data sheet status Change notice Supersedes 74HC5555 v.4 20180705 Product data sheet - 74HC_HCT5555 v.3 Modifications: • The format of this data sheet has been redesigned to comply with the identity guidelines of Nexperia. • Legal texts have been adapted to the new company name where appropriate. • Type numbers 74HC5555N (SOT38-4), 74HCT5555N (SOT38-4) and 74HCT5555D (SOT109-1) removed. 74HC_HCT5555 v.3 19930901 74HC5555 Product data sheet Product specification - All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 - © Nexperia B.V. 2018. All rights reserved. 25 / 28 74HC5555 Nexperia Programmable delay timer with oscillator 16 Legal information 16.1 Data sheet status Document status [1][2] Product status [3] Definition Objective [short] data sheet Development This document contains data from the objective specification for product development. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. Product [short] data sheet Production This document contains the product specification. [1] [2] [3] Please consult the most recently issued document before initiating or completing a design. The term 'short data sheet' is explained in section "Definitions". The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the Internet at URL http://www.nexperia.com. 16.2 Definitions Draft — The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. Nexperia does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. Short data sheet — A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local Nexperia sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. 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Suitability for use — Nexperia products are not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical 74HC5555 Product data sheet systems or equipment, nor in applications where failure or malfunction of an Nexperia product can reasonably be expected to result in personal injury, death or severe property or environmental damage. Nexperia and its suppliers accept no liability for inclusion and/or use of Nexperia products in such equipment or applications and therefore such inclusion and/or use is at the customer’s own risk. Applications — Applications that are described herein for any of these products are for illustrative purposes only. Nexperia makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Customers are responsible for the design and operation of their applications and products using Nexperia products, and Nexperia accepts no liability for any assistance with applications or customer product design. It is customer’s sole responsibility to determine whether the Nexperia product is suitable and fit for the customer’s applications and products planned, as well as for the planned application and use of customer’s third party customer(s). Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. Nexperia does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer’s applications or products, or the application or use by customer’s third party customer(s). Customer is responsible for doing all necessary testing for the customer’s applications and products using Nexperia products in order to avoid a default of the applications and the products or of the application or use by customer’s third party customer(s). Nexperia does not accept any liability in this respect. Limiting values — Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) will cause permanent damage to the device. Limiting values are stress ratings only and (proper) operation of the device at these or any other conditions above those given in the Recommended operating conditions section (if present) or the Characteristics sections of this document is not warranted. Constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device. Terms and conditions of commercial sale — Nexperia products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nexperia.com/profile/terms, unless otherwise agreed in a valid written individual agreement. In case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. Nexperia hereby expressly objects to applying the customer’s general terms and conditions with regard to the purchase of Nexperia products by customer. No offer to sell or license — Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from competent authorities. All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 26 / 28 74HC5555 Nexperia Programmable delay timer with oscillator Non-automotive qualified products — Unless this data sheet expressly states that this specific Nexperia product is automotive qualified, the product is not suitable for automotive use. It is neither qualified nor tested in accordance with automotive testing or application requirements. Nexperia accepts no liability for inclusion and/or use of non-automotive qualified products in automotive equipment or applications. In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer (a) shall use the product without Nexperia's warranty of the product for such automotive applications, use and specifications, and (b) whenever customer uses the product for automotive applications beyond Nexperia's specifications such use shall be solely at customer’s own risk, and (c) customer fully indemnifies Nexperia for any liability, damages or failed product claims resulting from customer 74HC5555 Product data sheet design and use of the product for automotive applications beyond Nexperia's standard warranty and Nexperia's product specifications. Translations — A non-English (translated) version of a document is for reference only. The English version shall prevail in case of any discrepancy between the translated and English versions. 16.4 Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. All information provided in this document is subject to legal disclaimers. Rev. 4 — 5 July 2018 © Nexperia B.V. 2018. All rights reserved. 27 / 28 74HC5555 Nexperia Programmable delay timer with oscillator Contents 1 2 3 4 5 6 6.1 6.2 7 7.1 7.2 8 9 10 11 11.1 12 12.1 12.2 12.3 12.4 12.5 12.6 12.7 12.8 12.9 13 14 15 16 General description ............................................ 1 Features and benefits .........................................1 Applications .........................................................2 Ordering information .......................................... 2 Functional diagram ............................................. 2 Pinning information ............................................ 5 Pinning ............................................................... 5 Pin description ................................................... 5 Functional description ........................................6 Test mode .......................................................... 7 Delay time selection .......................................... 8 Limiting values .................................................... 9 Recommended operating conditions ................ 9 Static characteristics ........................................ 10 Dynamic characteristics ...................................13 Waveforms and test circuit .............................. 16 Application information .................................... 19 Timing Component Limitations ........................ 20 Typical Crystal Oscillator ................................. 21 Accuracy .......................................................... 21 Start-up Using External Clock ......................... 21 Start-up Using RC Oscillator ........................... 21 Start-up Using Crystal Oscillator ......................21 Termination of the Timing Pulse ...................... 21 Synchronization ............................................... 22 Minimum Output Pulse Width .......................... 23 Package outline .................................................24 Abbreviations .................................................... 25 Revision history ................................................ 25 Legal information .............................................. 26 Please be aware that important notices concerning this document and the product(s) described herein, have been included in section 'Legal information'. © Nexperia B.V. 2018. All rights reserved. For more information, please visit: http://www.nexperia.com For sales office addresses, please send an email to: salesaddresses@nexperia.com Date of release: 5 July 2018 Document identifier: 74HC5555