74HC4538DB,118

74HC4538 Dual retriggerable precision monostable multivibrator Rev. 5 — 17 March 2017 1 Product data sheet General description The 74HC4538 is a dual retriggerable-resettable monostable multivibrator. Each multivibrator has two trigger/retrigger inputs (nA and nB), a direct reset input (nCD), two complementary outputs (nQ and nQ), and two pins (nREXT/CEXT and nCEXT) for connecting the external timing components CEXT and REXT. Typical pulse width variation over temperature range is ± 0.2 %. The device may be triggered by either the positive or the negative edges of the input pulse. The duration and accuracy of the output pulse are determined by the external timing components CEXT and REXT. The output pulse width (TW) is equal to 0.7 × REXT × CEXT. The linear design techniques guarantee precise control of the output pulse width. A LOW level at nCD terminates the output pulse immediately. Schmitt-trigger action in the trigger inputs makes the circuit highly tolerant to slower rise and fall times. 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 • • • • • • Tolerant of slow trigger rise and fall times Separate reset inputs Triggering from falling or rising edge Complies with JEDEC standard no. 7A CMOS input levels: ESD protection: – HBM JESD22-A114F exceeds 2000 V – MM JESD22-A115-A exceeds 200 V • Multiple package options • Specified from -40 °C to +85 °C and from -40 °C to +125 °C 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator 3 Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74HC4538D -40 °C to +125 °C SO16 plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 74HC4538DB -40 °C to +125 °C SSOP16 plastic shrink small outline package; 16 leads; body width 5.3 mm SOT338-1 74HC4538PW -40 °C to +125 °C TSSOP16 plastic thin shrink small outline package; 16 leads; body width 4.4 mm 4 SOT403-1 Functional diagram 2 1REXT/CEXT 1 1CEXT 5 1A 4 1B 3 1CD 14 2REXT/CEXT 15 2CEXT 11 2A 12 2B 13 2CD 1Q 6 1Q 7 2Q 10 2Q 9 001aae727 Figure 1. Functional diagram 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 2 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator nB nA VCC nREXT/CEXT Vref1 enable nCEXT GND nCD power-on reset VCC Vref2 enable nQ nQ mba338 GND Figure 2. Logic diagram (one multivibrator) 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 3 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator 5 Pinning information 5.1 Pinning 74HC4538 1CEXT 1 16 VCC 1REXT/CEXT 2 15 2CEXT 1CD 3 14 2REXT/CEXT 1B 4 13 2CD 1A 5 12 2B 1Q 6 11 2A 1Q 7 10 2Q GND 8 9 74HC4538 1CEXT 1 16 VCC 1REXT/CEXT 2 15 2CEXT 1CD 3 14 2REXT/CEXT 1B 4 13 2CD 1A 5 12 2B 1Q 6 11 2A 1Q 7 10 2Q GND 8 2Q aaa-026540 9 2Q aaa-026542 Figure 3. Pin configuration for SO16 Figure 4. Pin configuration for SSOP16 and TSSOP16 5.2 Pin description Table 2. Pin description Symbol Pin Description 1CEXT, 2CEXT 1, 15 external capacitor connection (always connected to ground) 1REXT/CEXT, 2REXT/CEXT 2, 14 external capacitor/resistor connection 1CD, 2CD 3, 13 direct reset input (active LOW) 1B, 2B 4, 12 input (LOW to HIGH triggered) 1A, 2A 5, 11 input (HIGH to LOW triggered) 1Q, 2Q 6, 10 output 1Q, 2Q 7, 9 complementary output (active LOW) GND 8 ground (0 V) VCC 16 supply voltage 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 4 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator 6 Functional description Table 3. Function table [1] Inputs Outputs nA nB nCD ↓ L H H ↑ H X X L [1] nQ nQ L H H = HIGH voltage level; L = LOW voltage level; X = don’t care; ↑ = positive-going transition; ↓ = negative-going transition; = one HIGH level output pulse, with the pule width determined by CEXT and REXT; = one LOW level output pulse, with the pulse width determined by CEXT and REXT. (1) (1) (2) (1) nB input (3) nA input (4) nCD input nREXT/CEXT input Vref2 Vref1 Vref1 Vref2 nQ output T T (5) T 001aae737 (1) Positive edge triggering. (2) Positive edge re-triggering (pulse lengthening). (3) Negative edge triggering. (4) Reset (pulse shortening). (5) TW = 0.7 x REXT x CEXT (see also Figure 6. Figure 5. Timing diagram CEXT GND nCEXT REXT VCC nREXT/CEXT nA nB nQ T nQ T = 0.7 × REXT × CEXT nCD 001aak192 Figure 6. Connection of the external timing components REXT and CEXT 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 5 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator 7 Limiting values Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter VCC Conditions supply voltage IIK input clamping current Min Max Unit -0.5 +7.0 V VI < -0.5 V or VI > VCC + 0.5 V [1] - ±20 mA [1] - ±20 mA - ±25 mA IOK output clamping current VO < -0.5 V or VO > VCC + 0.5 V IO output current VO = -0.5 V to VCC + 0.5 V ICC supply current - +50 mA IGND ground current -50 - mA Tstg storage temperature -65 +150 °C Ptot total power dissipation [1] [2] [3] Tamb = -40 °C to +125 °C SO16 package [2] - 500 mW (T)SSOP16 package [3] - 500 mW The input and output voltage ratings may be exceeded if the input and output current ratings are observed. Ptot derates linearly with 8 mW/K above 70 °C. Ptot derates linearly with 5.5 mW/K above 60 °C. 8 Recommended operating conditions Table 5. Recommended operating conditions Voltages are referenced to GND (ground = 0 V) 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 Tamb ambient temperature -40 - +125 °C 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 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 6 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator 9 Static characteristics Table 6. Static characteristics At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter VIH VOL II -40 °C to +85 °C -40 °C to +125 °C Unit 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 VI = VIH or VIL HIGH-level output voltage IO = -20 μA; VCC = 2.0 V 1.9 2.0 - 1.9 - 1.9 - V IO = -20 μA; VCC = 4.5 V 4.4 4.5 - 4.4 - 4.4 - V IO = -20 μA; VCC = 6.0 V 5.9 6.0 - 5.9 - 5.9 - V IO = -4.0 mA; VCC = 4.5 V 3.98 4.32 - 3.84 - 3.7 - V IO = -5.2 mA; VCC = 6.0 V 5.48 5.81 - 5.34 - 5.2 - V LOW-level input voltage VOH 25 °C Min Typ Max HIGH-level input voltage VIL Conditions VI = VIH or VIL LOW-level output voltage IO = 20 μA; VCC = 2.0 V - 0 0.1 - 0.1 - 0.1 V IO = 20 μA; VCC = 4.5 V - 0 0.1 - 0.1 - 0.1 V IO = 20 μA; VCC = 6.0 V - 0 0.1 - 0.1 - 0.1 V IO = 4.0 mA; VCC = 4.5 V - 0.15 0.26 - 0.33 - 0.4 V IO = 5.2 mA; VCC = 6.0 V - 0.16 0.26 - 0.33 - 0.4 V input leakage current VI = VCC or GND; VCC = 6.0 V - - ±0.1 - ±1 - ±1 μA pin nREXT/CEXT; VI = 2.0 V or GND; other inputs at VCC or GND; [1] VCC = 6.0 V - - ±50 - ±500 - ±500 nA ICC supply current VI = VCC or GND; IO = 0 A; VCC = 6.0 V - - 8.0 - 80 - 160 μA CI input capacitance - 3.5 - - - - - pF [1] This measurement can only be carried out after a trigger pulse is applied. 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 7 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator 10 Dynamic characteristics Table 7. Dynamic characteristics Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 9. Symbol Parameter Conditions 25 °C Min Typ tPLH LOW to HIGH nA, nB to nQ; see Figure 7 propagation VCC = 2.0 V delay VCC = 4.5 V [1] -40 °C to +85 °C -40 °C to +125 °C Max Min Max Min Max Unit - 85 265 - 330 - 400 ns - 31 53 - 66 - 80 ns VCC = 5.0 V; CL = 15 pF - 27 - - - - - ns VCC = 6.0 V - 25 45 - 56 - 68 ns VCC = 2.0 V - 83 265 - 340 - 400 ns VCC = 4.5 V - 30 53 - 68 - 80 ns VCC = 6.0 V - 24 45 - 58 - 68 ns - 83 265 - 330 - 400 ns - 30 53 - 66 - 80 ns VCC = 5.0 V; CL = 15 pF - 27 - - - - - ns VCC = 6.0 V - 24 45 - 56 - 68 ns VCC = 2.0 V - 80 265 - 330 - 400 ns VCC = 4.5 V - 29 53 - 66 - 80 ns - 23 45 - 56 - 68 ns VCC = 2.0 V - 19 75 - 95 - 119 ns VCC = 4.5 V - 7 15 - 19 - 22 ns VCC = 6.0 V - 6 13 - 16 - 19 ns VCC = 2.0 V 80 17 - 100 - 120 - ns VCC = 4.5 V 16 6 - 20 - 24 - ns VCC = 6.0 V 14 5 - 17 - 20 - ns VCC = 2.0 V 80 17 - 100 - 120 - ns VCC = 4.5 V 16 6 - 20 - 24 - ns VCC = 6.0 V 14 5 - 17 - 20 - ns 80 19 - 100 - 120 - ns nCD to nQ; see Figure 7 tPHL HIGH to LOW nA, nB to nQ; see Figure 7 propagation VCC = 2.0 V delay VCC = 4.5 V nCD to nQ; see Figure 7 VCC = 6.0 V tt tW transition time nQ and nQ; see Figure 7 pulse width [2] nA LOW; see Figure 8 nB HIGH; see Figure 8 nCD LOW; see Figure 8 VCC = 2.0 V 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 8 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator Symbol Parameter Conditions 25 °C Min Typ [1] -40 °C to +85 °C -40 °C to +125 °C Max Min Max Min Max Unit VCC = 4.5 V 16 7 - 20 - 24 - ns VCC = 6.0 V 14 6 - 17 - 20 - ns 630 700 770 602 798 595 805 μs VCC = 2.0 V 35 6 - 45 - 55 - ns VCC = 4.5 V 7 2 - 9 - 11 - ns VCC = 6.0 V 6 2 - 8 - 9 - ns VCC = 2.0 V - 455+X - - - - - ns VCC = 4.5 V - 80+X - - - - - ns VCC = 6.0 V - 55+X - - - - - ns VCC = 2.0 V 10 - 1000 - - - - kΩ VCC = 5.0 V 2 - 1000 - - - - kΩ - - - pF nQ and nQ HIGH or LOW; see Figure 8 VCC = 5.0 V; CEXT = 0.1 μF; REXT = 10 kΩ recovery time nCD to nA, nB; see Figure 8 trec trtrig retrigger time REXT external timing resistor CEXT external timing capacitor CPD power dissipation capacitance [1] [2] [3] nA, nB; see Figure 8; X = CEXT / (4.5 × VCC) no limits per multivibrator; VI = GND to VCC [3] - 136 - - Typical values are measured at nominal supply voltage (VCC = 3.3 V and VCC = 5.0 V). tt is the same as tTHL and tTLH. CPD is used to determine the dynamic power dissipation (PD in μW). 2 2 2 PD = CPD × VCC × fi + Σ(CL × VCC × fo) + 0.48 × CEXT × VCC × fo + D × 0.8 × VCC where: fi = input frequency in MHz; fo = output frequency in MHz; 2 Σ(CL × VCC × fo) = sum of the outputs; CL = output load capacitance in pF; VCC = supply voltage in V; D = duty cycle factor in %; CEXT = external timing capacitance in pF. 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 9 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator 10.1 Waveforms and test circuit VI nB input VM GND tW VI nA input VM GND tW VI nCD input VM GND tPLH VOH nQ output tPLH VY VM VX VOL tPHL tTHL tPHL VM tPHL tTLH VOH nQ output tPLH VY VM VX VOL 001aak194 Measurement points are given in Table 8. Logic levels: VOL and VOH are typical output levels that occur with the output load. Figure 7. Waveforms showing propagation delays and transition times VI nCD input VM GND tW trec tW VI nA input VM GND tW VI nB input VM GND trtrig VOH nQ, nQ output VM VOL tW 001aak195 Measurement points are given in Table 8. Logic levels: VOL and VOH are typical output levels that occur with the output load. Figure 8. Waveforms showing nA, nB, nQ, nQ pulse widths, recovery and retrigger times 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 10 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator Table 8. Measurement points Input Output VM VM VX VY 0.5VCC 0.5VCC 0.1VCC 0.9VCC VI negative pulse tW 90 % VM 0V VI positive pulse 0V VM 10 % tf tr tr tf 90 % VM VM 10 % tW VCC G VI DUT VCC VO RT RL S1 open CL 001aad983 Test data is given in Table 9 . Definitions test circuit: RT = Termination resistance should be equal to output impedance Zo of the pulse generator. CL = Load capacitance including jig and probe capacitance. RL = Load resistance. S1 = Test selection switch Figure 9. Test circuit for measuring switching times Table 9. Test data Input S1 position Load VI tr, tf CL RL tPHL, tPLH VCC 6 ns 15 pF, 50 pF 1 kΩ open 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 11 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator 11 Application information 11.1 Power-down considerations A large capacitor (CEXT) may cause problems when powering-down the monostable due to energy stored in this capacitor. When a system containing this device is powereddown or rapid decrease of VCC to zero occurs, the monostable may sustain damage, due to the capacitor discharging through the input protection diodes. To avoid this possibility, use a damping diode (DEXT) preferably a germanium or Schottky type diode able to withstand large current surges and connect as shown in Figure 10 DEXT CEXT REXT GND nCEXT VCC nREXT/CEXT 001aak193 Figure 10. Power-down protection circuit 11.2 Graphs 001aak196 1.6 1 kΩ 2 kΩ 5.6 kΩ 51 kΩ 1 MΩ normalized K factor (K) 1.2 1.12 REXT × CEXT (tW) 0.84 1.0 0.70 0.8 0.56 0.6 10- 10 10- 9 10- 8 10- 7 10- 6 10- 5 CEXT (F) 0.42 10- 4 VCC = 4.5 V; Tamb = 25 °C. Figure 11. Typical pulse width accuracy versus external capacitance 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 12 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator 001aak197 1.6 normalized K factor (K) 1.12 REXT × CEXT (tW) 1.2 0.84 1 nF 1.0 0.70 > 100 nF 0.8 0.56 0.6 103 104 105 REXT (Ω) 0.42 106 VCC = 4.5 V; Tamb = 25 °C. Figure 12. Typical pulse width accuracy versus external resistance 001aak198 1.6 normalized K factor (K) 1.12 REXT × CEXT (tW) 1.2 0.84 +10 % REXT 1.0 0.70 - 10 % 0.8 0.56 0.6 10- 10 10- 9 10- 8 10- 7 10- 6 10- 5 CEXT (F) 0.42 10- 4 VCC = 4.5 V; REXT = 10 kΩ; Tamb = 25 °C. Figure 13. Typical pulse width accuracy versus external capacitance 001aak199 1.7 normalized K factor (K) 2 kΩ 1 kΩ REXT × CEXT (tW) 5.6 kΩ 1.3 0.91 10 kΩ 1.1 0.77 1 MΩ 0.9 0.7 1.19 1 2 0.63 3 4 5 VCC (V) 6 0.49 CEXT = 1 nF; Tamb = 25 °C. Figure 14. Typical pulse width accuracy versus power supply 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 13 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator 001aak200 1.7 normalized K factor (K) 1.3 0.9 0.7 REXT × CEXT (tW) 1 kΩ 0.91 2 kΩ 5.6 kΩ 1 MΩ 1.1 1 1.19 0.77 0.63 2 3 4 5 6 VCC (V) 0.49 CEXT = 100 nF; Tamb = 25 °C. Figure 15. Typical pulse width accuracy versus power supply 001aak201 1.7 1 kΩ normalized K factor (K) REXT × CEXT (tW) 2 kΩ 1.3 1.19 0.91 5.6 kΩ 1.1 1 MΩ 0.77 0.9 0.7 - 50 0.63 0 50 100 Tamb (°C) 0.49 150 VCC = 4.5 V; CEXT = 1 nF; Tamb = 25 °C. Figure 16. Typical pulse width accuracy versus temperature 001aak202 1.7 normalized K factor (K) 1.19 REXT × CEXT (tW) 1.3 0.91 1.1 0.77 1 kΩ 2 kΩ 5.6 kΩ 1 MΩ 0.9 0.7 - 50 0 50 100 Tamb (°C) 0.63 0.49 150 VCC = 4.5 V; CEXT = 1 μF; Tamb = 25 °C. Figure 17. Typical pulse width accuracy versus temperature 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 14 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator 12 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) 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 15 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator SSOP16: plastic shrink small outline package; 16 leads; body width 5.3 mm D SOT338-1 E A X c y HE v M A Z 9 16 Q A2 A (A 3) A1 pin 1 index θ Lp L 8 1 detail X w M bp e 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) θ mm 2 0.21 0.05 1.80 1.65 0.25 0.38 0.25 0.20 0.09 6.4 6.0 5.4 5.2 0.65 7.9 7.6 1.25 1.03 0.63 0.9 0.7 0.2 0.13 0.1 1.00 0.55 8o 0o Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT338-1 REFERENCES IEC JEDEC JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-19 MO-150 Figure 19. Package outline SOT338-1 (SSOP16) 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 16 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm D SOT403-1 E A X c y HE v M A Z 9 16 Q A2 pin 1 index (A 3 ) A1 A θ Lp 1 L 8 detail X w M bp e 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (2) e HE L Lp Q v w y Z (1) θ mm 1.1 0.15 0.05 0.95 0.80 0.25 0.30 0.19 0.2 0.1 5.1 4.9 4.5 4.3 0.65 6.6 6.2 1 0.75 0.50 0.4 0.3 0.2 0.13 0.1 0.40 0.06 8o 0o Notes 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. Plastic interlead protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT403-1 REFERENCES IEC JEDEC JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-18 MO-153 Figure 20. Package outline SOT403-1 (TSSOP16) 74HC4538 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 17 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator 13 Abbreviations Table 10. Abbreviations Acronym Description CMOS Complementary Metal-Oxide Semiconductor DUT Device Under Test ESD ElectroStatic Discharge HBM Human Body Model MM Machine Model 14 Revision history Table 11. Revision history Document ID Release date Data sheet status Change notice Supersedes 74HC4538 v.5 20170317 Product data sheet - 74HC_HCT4538 v.4 Modifications: • Type numbers 74HCT4538D, 74HCT4538DB, 74HCT4538PW removed. • Table 6: Maximum input leakage current for pins 1REXT/CEXT and 2REXT/CEXT changed. 74HC_HCT4538 v.4 20160224 Modifications: • Type numbers 74HC4538N and 74HCT4538N (SOT38-4) removed. 74HC_HCT4538 v.3 20090608 Modifications: • The format of this data sheet has been redesigned to comply with the new identity guidelines of NXP Semiconductors. • Legal texts have been adapted to the new company name where appropriate. • Pin names changed throughout. • Section Section 7, Section 8 and Section 9 added, taken from the 74HC/T HCMOS Family characteristics/specification (March 1988). • Test circuit added: Figure 9. • Quick reference data incorporated in to Section 9 and Section 10. • Package information added for DIP16, SO16, SSOP16 and TSSOP16 packages. 74HC_HCT4538_CNV v.2 19970902 74HC4538 Product data sheet Product data sheet Product data sheet Product specification - - All information provided in this document is subject to legal disclaimers. Rev. 5 — 17 March 2017 74HC_HCT4538 v.3 74HC_HCT4538_CNV v.2 - © Nexperia B.V. 2017. All rights reserved. 18 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator 15 Legal information 15.1 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. 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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 74HC4538 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. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 19 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator 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 74HC4538 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. 15.4 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. 5 — 17 March 2017 © Nexperia B.V. 2017. All rights reserved. 20 / 21 74HC4538 Nexperia Dual retriggerable precision monostable multivibrator Contents 1 2 3 4 5 5.1 5.2 6 7 8 9 10 10.1 11 11.1 11.2 12 13 14 15 General description ............................................ 1 Features and benefits .........................................1 Ordering information .......................................... 2 Functional diagram ............................................. 2 Pinning information ............................................ 4 Pinning ............................................................... 4 Pin description ................................................... 4 Functional description ........................................5 Limiting values .................................................... 6 Recommended operating conditions ................ 6 Static characteristics .......................................... 7 Dynamic characteristics .....................................8 Waveforms and test circuit .............................. 10 Application information .................................... 12 Power-down considerations .............................12 Graphs ............................................................. 12 Package outline .................................................15 Abbreviations .................................................... 18 Revision history ................................................ 18 Legal information .............................................. 19 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. 2017. 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: 17 March 2017 Document identifier: 74HC4538 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Nexperia: 74HC4538DB,112 74HC4538PW,118 74HC4538D,653 74HC4538DB,118 74HC4538D,652 74HC4538PW,112