SN74AHC123AMDREP

SN74AHC123A-EP DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR www.ti.com SCLS703A – JULY 2006 – REVISED MARCH 2007 FEATURES • • • • • • • • • (1) Controlled Baseline – One Assembly Site – One Test Site – One Fabrication Site Extended Temperature Performance of –55°C to 125°C Enhanced Diminishing Manufacturing Sources (DMS) Support Enhanced Product-Change Notification Qualification Pedigree (1) Operating Range 2-V to 5.5-V VCC Schmitt-Trigger Circuitry On A, B, and CLR Inputs for Slow Input Transition Rates Edge Triggered From Active-High or Active-Low Gated Logic Inputs Retriggerable for Long Output Pulses Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits. • • • • Overriding Clear Terminates Output Pulse Glitch-Free Power-Up Reset On Outputs Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) xxx D PACKAGE (TOP VIEW) 1A 1B 1CLR 1Q 2Q 2Cext 2Rext/Cext GND 1 2 3 4 5 6 7 8 VCC 1Rext/Cext 14 1Cext 13 1Q 16 15 2Q 11 2CLR 10 2B 12 9 2A xxx DESCRIPTION/ORDERING INFORMATION The SN74AHC123A device is a dual retriggerable monostable multivibrator designed for 2-V to 5.5-V VCC operation. This edge-triggered multivibrator features output pulse-duration control by three methods. In the first method, the A input is low, and the B input goes high. In the second method, the B input is high, and the A input goes low. In the third method, the A input is low, the B input is high, and the clear (CLR) input goes high. The output pulse duration is programmed by selecting external resistance and capacitance values. The external timing capacitor must be connected between Cext and Rext/Cext (positive) and an external resistor connected between Rext/Cext and VCC. To obtain variable pulse durations, connect an external variable resistance between Rext/Cext and VCC. The output pulse duration can be reduced by taking CLR low. Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse. The A, B, and CLR inputs have Schmitt triggers with sufficient hysteresis to handle slow input transition rates with jitter-free triggering at the outputs. Once triggered, the basic pulse duration can be extended by retriggering the gated low-level-active (A) or high-level-active (B) input. Pulse duration can be reduced by taking CLR low. CLR can be used to override A or B inputs. The input/output timing diagram illustrates pulse control by retriggering the inputs and early clearing. The variance in output pulse duration from device to device is less than ±0.5% (typ) for given external timing components. An example of this distribution for the SN74AHC123A is shown in Figure 10. Variations in output pulse duration versus supply voltage and temperature are shown in Figure 6. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2006–2007, Texas Instruments Incorporated SN74AHC123A-EP DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR www.ti.com SCLS703A – JULY 2006 – REVISED MARCH 2007 DESCRIPTION/ORDERING INFORMATION (CONTINUED) During power up, Q outputs are in the low state and Q outputs are in the high state. The outputs are glitch free, without applying a reset pulse. For additional application information on multivibrators, see the application report Designing With the SN74AHC123A and SN74AHCT123A, literature number SCLA014. ORDERING INFORMATION (1) PACKAGE (2) TA –55°C to 125°C (1) (2) SOIC – D ORDERABLE PART NUMBER Tape and reel TOP-SIDE MARKING SN74AHC123AMDREP AHC123A-EP For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI Web site at www.ti.com. Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE (each multivibrator) INPUTS (1) OUTPUTS CLR A B Q L X X L H X H X L (1) H (1) X X L L (1) H (1) H L ↑ H ↓ H ↑ L H Q These outputs are based on the assumption that the indicated steady-state conditions at the A and B inputs have been set up long enough to complete any pulse started before the setup. LOGIC DIAGRAM, EACH MULTIVIBRATOR (POSITIVE LOGIC) Rext/Cext A Cext B Q CLR 2 R Submit Documentation Feedback Q SN74AHC123A-EP DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR www.ti.com SCLS703A – JULY 2006 – REVISED MARCH 2007 INPUT/OUTPUT TIMING DIAGRAM trr A B CLR Rext/Cext Q Q tw tw tw + trr Absolute Maximum Ratings (1) over operating free-air temperature range (unless otherwise noted) MIN MAX VCC Supply voltage range (2) –0.5 7 V VI Input voltage range (3) –0.5 7 V –0.5 VCC + 0.5 V –0.5 7 state (2) UNIT VO Output voltage range in high or low VO Output voltage range in power-off state (2) IIK Input clamp current VI < 0 V –20 mA IOK Output clamp current VO < 0 V or VO < VCC ±20 mA IO Continuous output current VO = 0 V to VCC ±25 mA Continuous current through VCC or GND θJA Package thermal impedance (4) Tstg Storage temperature range (1) (2) (3) (4) –65 V ±50 mA 73 °C/W 150 °C Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Voltage values are with respect to the network ground terminal. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. The package thermal impedance is calculated in accordance with JESD 51-7. Submit Documentation Feedback 3 SN74AHC123A-EP DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR www.ti.com SCLS703A – JULY 2006 – REVISED MARCH 2007 Recommended Operating Conditions (1) VCC Supply voltage VIH High-level input voltage MIN MAX 2 5.5 VCC = 2 V 1.5 VCC = 3 V 2.1 VCC = 5.5 V UNIT V V 3.85 VCC = 2 V 0.5 VCC = 3 V 0.9 VIL Low-level input voltage VI Input voltage 0 5.5 VO Output voltage 0 VCC V –50 µA VCC = 5.5 V 1.65 VCC = 2 V IOH High-level output current IOL Low-level output current Rext External timing resistance ∆t/∆VCC Power-up ramp rate TA Operating free-air temperature (1) V VCC = 3.3 V ± 0.3 V –4 VCC = 5 V ± 0.5 V –8 VCC = 2 V 50 VCC = 3.3 V ± 0.3 V 4 VCC = 5 V ± 0.5 V 8 VCC = 2 V 5 VCC > 3 V 1 mA µA mA kΩ 1 –55 V ms/V 125 °C Unused Rext/Cext terminals should be left unconnected. All remaining unused inputs of the device must be held at VCC or GND to ensure proper device operation. See the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. Electrical Characteristics over operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS IOH = –50 µA VOH TA = 25°C MAX MIN MIN TYP 2V 1.9 2 1.9 3V 2.9 3 2.9 4.5 4.5 V 4.4 IOH = –4 mA 3V 2.58 2.48 IOH = –8 mA 4.5 V 3.94 3.8 MAX 4.4 0.1 0.1 3V 0.1 0.1 4.5 V 0.1 0.1 IOL = 4 mA 3V 0.36 0.44 IOL = 8 mA 4.5 V 0.36 0.44 Rext/Cext (1) VI = VCC or GND 5.5 V ±0.25 ±2.5 A, B, and CLR VI = VCC or GND 0 V to 5.5 V ±0.1 ±1 (2) ICC Quiescent VI = VCC or GND, IO = 0 4 40 ICC Active state (per circuit) VI = VCC or GND, Rext/Cext = 0.5 VCC VOL II Ci (1) (2) VI = VCC or GND 5.5 V 3V 160 250 280 4.5 V 280 500 650 5.5 V 360 750 975 5V 1.9 10 10 This test is performed with the terminal in the off-state condition. On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V. Submit Documentation Feedback UNIT V 2V IOL = 50 µA 4 VCC V µA µA µA pF SN74AHC123A-EP DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR www.ti.com SCLS703A – JULY 2006 – REVISED MARCH 2007 Timing Requirements over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1) PARAMETER tw Pulse duration trr Pulse retirgger time (1) TEST CONDITIONS TA = 25°C MIN TYP MAX MIN CLR 5 5 A or B trigger 5 5 MAX UNIT ns Rext = 1 kΩ, Cext = 100 pF (1) 76 (1) ns Rext = 1 kΩ, Cext = 0.01 µF (1) 1.8 (1) µs See retriggering data in the application information section. Timing Requirements over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) PARAMETER tw Pulse duration trr Pulse retirgger time (1) TEST CONDITIONS TA = 25°C MIN TYP MAX MIN CLR 5 5 A or B trigger 5 5 MAX UNIT ns Rext = 1 kΩ, Cext = 100 pF (1) 59 (1) ns Rext = 1 kΩ, Cext = 0.01 µF (1) 1.5 (1) µs See retriggering data in the application information section. Switching Characteristics over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1) PARAMETER tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL FROM (INPUT) TO (OUTPUT) TEST CONDITIONS A or B Q or Q CL = 15 pF CLR Q or Q CL = 15 pF CLR trigger Q or Q CL = 15 pF A or B Q or Q CL = 50 pF CLR Q or Q CL = 50 pF CLR trigger Q or Q CL = 50 pF TA = 25°C MIN Q or Q 10.2 (1) 20.6 (1) MIN MAX 1 (1) 24 (1) 1 (1) 24 (1) 7.5 (1) 15.8 (1) 1 (1) 18.5 (1) 9.3 (1) 1 (1) 18.5 (1) 15.8 (1) 10 (1) 22.4 (1) 1 (1) 26 (1) 10.6 (1) 22.4 (1) 1 (1) 26 (1) 10.5 24.1 1 27.5 11.8 24.1 1 27.5 8.9 19.3 1 22 10.5 19.3 1 22 11 25.9 1 29.5 12.3 25.9 1 29.5 182 240 UNIT ns ns ns ns ns ns 300 ns CL = 50 pF, Cext = 0.01 µF, Rext = 10 kΩ 90 100 110 90 110 µs CL = 50 pF, Cext = 0.1 µF, Rext = 10 kΩ 0.9 1 1.1 0.9 1.1 ms ∆tw (3) (1) (2) (3) MAX 9.5 (1) 20.6 (1) CL = 50 pF, Cext = 28 µF, Rext = 2 kΩ tw (2) TYP ±1% On products compliant to MIL-PRF-38535, this parameter is not production tested. tw = Pulse duration at Q and Q outputs ∆tw = Output pulse-duration variation (Q and Q) between circuits in same package Submit Documentation Feedback 5 SN74AHC123A-EP DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR www.ti.com SCLS703A – JULY 2006 – REVISED MARCH 2007 Switching Characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) PARAMETER tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL FROM (INPUT) TO (OUTPUT) TEST CONDITIONS A or B Q or Q CL = 15 pF CLR Q or Q CL = 15 pF CLR trigger Q or Q CL = 15 pF A or B Q or Q CL = 50 pF CLR Q or Q CL = 50 pF CLR trigger Q or Q CL = 50 pF TA = 25°C MIN CL = 50 pF, Cext = 28 µF, Rext = 2 kΩ tw (2) Q or Q MAX 12 (1) 1 (1) 14 (1) 12 (1) 1 (1) 14 (1) 5.3 (1) 9.4 (1) 1 (1) 11 (1) 6.5 (1) 9.4 (1) 1 (1) 11 (1) 6.9 (1) 12.9 (1) 1 (1) 15 (1) 7.4 (1) 12.9 (1) 1 (1) 15 (1) 7.3 14 1 16 8.3 14 1 16 6.3 11.4 1 13 7.4 11.4 1 13 7.6 14.9 1 17 8.7 14.9 1 17 167 200 MAX 6.5 (1) 7.1 (1) UNIT ns ns ns ns ns ns 240 ns CL = 50 pF, Cext = 0.01 µF, Rext = 10 kΩ 90 100 110 90 110 µs CL = 50 pF, Cext = 0.1 µF, Rext = 10 kΩ 0.9 1 1.1 0.9 1.1 ms ∆tw (3) (1) (2) (3) MIN TYP ±1% On products compliant to MIL-PRF-38535, this parameter is not production tested. tw = Pulse duration at Q and Q outputs ∆tw = Output pulse-duration variation (Q and Q) between circuits in same package Operating Characteristics VCC = 5 V, TA = 25°C PARAMETER Cpd 6 TEST CONDITIONS Power dissipation capacitance No load Submit Documentation Feedback TYP 29 UNIT pF SN74AHC123A-EP DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR www.ti.com SCLS703A – JULY 2006 – REVISED MARCH 2007 PARAMETER MEASUREMENT INFORMATION From Output Under Test Test Point tw VCC CL (see Note A) Inputs or Outputs 50% VCC 50% VCC 0V VOLTAGE WAVEFORMS PULSE DURATION LOAD CIRCUIT VCC Input A (see Note B) 50% VCC 0V VCC Input B (see Note B) 50% VCC 50% VCC 0V 50% VCC VOH In-Phase Output 50% VCC In-Phase Output VOL 50% VCC VOL 50% VCC Out-of-Phase Output VOH 50% VCC VOL tPLH tPHL tPHL VOH tPHL tPLH 0V tPLH Out-of-Phase Output VCC Input CLR (see Note B) 50% VCC VOH 50% VCC VOL VOLTAGE WAVEFORMS DELAY TIMES VOLTAGE WAVEFORMS DELAY TIMES NOTES: A. CL includes probe and jig capacitance. B. All input pulses are supplied by generators having the following characteristics: ZO = 50 W, tr = 3 ns, tf = 3 ns. C. The outputs are measured one at a time, with one input transition per measurement. Figure 1. Load Circuit and Voltage Waveforms Submit Documentation Feedback 7 SN74AHC123A-EP DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR www.ti.com SCLS703A – JULY 2006 – REVISED MARCH 2007 APPLICATION INFORMATION Caution in Use To prevent malfunctions due to noise, connect a high-frequency capacitor between VCC and GND, and keep the wiring between the external components and Cext and Rext/Cext terminals as short as possible. Powerdown Considerations Large values of Cext can cause problems when powering down the SN74AHC123A devices because of the amount of energy stored in the capacitor. When a system containing this device is powered down, the capacitor can discharge from VCC through the protection diodes at pin 2 or pin 14. Current through the input protection diodes must be limited to 30 mA; therefore, the turn-off time of the VCC power supply must not be faster than t = VCC× Cext/30 mA. For example, if VCC = 5 V and Cext = 15 pF, the VCC supply must turn off no faster than t = (5 V) × (15 pF)/30 mA = 2.5 ns. Usually, this is not a problem because power supplies are heavily filtered and cannot discharge at this rate. When a more rapid decrease of VCC to zero occurs, the SN74AHC123A can sustain damage. To avoid this possibility, use external clamping diodes. Output Pulse Duration The output pulse duration (tw) is determined primarily by the values of the external capacitance (CT) and timing resistance (RT). The timing components are connected as shown in Figure 2. VCC RT CT To Rext/Cext Terminal To Cext Terminal Figure 2. Timing-Component Connections The pulse duration is given by: tw + K RT CT (1) if CT is ≥ 1000 pF, K = 1 or if CT is < 1000 pF, K can be determined from Figure 9 where: tw = pulse duration in ns RT = external timing resistance in kΩ CT = external capacitance in pF K = multiplier factor Equation 1 and Figure 3 can be used to determine values for pulse duration, external resistance, and external capacitance. 8 Submit Documentation Feedback SN74AHC123A-EP DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR www.ti.com SCLS703A – JULY 2006 – REVISED MARCH 2007 APPLICATION INFORMATION (continued) Retriggering Data NOTE: Operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. The minimum input retriggering time (tMIR) is the minimum time required after the initial signal before retriggering the input. After tMIR, the device retriggers the output. Experimentally, it also can be shown that to retrigger the output pulse, the two adjacent input signals should be tMIR apart, where tMIR = 0.3 × tw. The retrigger pulse duration is calculated as shown in Figure 3. tMIR Input tRT = tw + tPLH = (K ´ RT tRT tw tPLH Output ´ CT) + tPLH Where: tMIR = Minimum Input Retriggering Time tPLH = Propagation Delay tRT = Retrigger Time tw = Output Pulse Duration Before Retriggering Figure 3. Retrigger Pulse Duration The minimum value from the end of the input pulse to the beginning of the retriggered output should be approximately 15 ns to ensure a retriggered output (see Figure 4). Input tMRT Output tMRT = Minimum Time Between the End of the Second Input Pulse and the Beginning of the Retriggered Output tMRT = 15 ns Figure 4. Input/Output Requirements Submit Documentation Feedback 9 SN74AHC123A-EP DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR www.ti.com SCLS703A – JULY 2006 – REVISED MARCH 2007 APPLICATION INFORMATION (continued) NOTE: Operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. 1.00E+09 VCC = 5 V TA = 25°C 1.00E+08 RT = 200k Ω t w − Output Pulse Duration − ns 1.00E+07 RT = 150k Ω 1.00E+06 RT = 80k Ω 1.00E+05 RT = 10k Ω 1.00E+04 RT = 5k Ω 1.00E+03 1.00E+02 RT = 1k Ω 1.00E+01 1.00E+00 1 102 10 103 104 105 106 107 CT − External Timing Capacitance − pF Figure 5. Output Pulse Duration vs External Timing Capacitance 14% Variation in Output Pulse Duration 12% 10% tw = 866 ns at: VCC = 5 V RT = 10 kΩ CT = 50 pF TA = 25°C VCC = 2.5 V VCC = 3 V VCC = 3.5 V 8% VCC = 4 V 6% VCC = 5 V 4% VCC = 6 V VCC = 7 V 2% 0% −2% −4% −6% −60 −40 −20 0 20 40 60 80 100 120 140 160 Temperature − °C Figure 6. Variations in Output Pulse Duration vs Temperature 10 Submit Documentation Feedback 180 SN74AHC123A-EP DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR www.ti.com SCLS703A – JULY 2006 – REVISED MARCH 2007 APPLICATION INFORMATION (continued) NOTE: Operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. OUTPUT PULSE-DURATION CONSTANT vs SUPPLY VOLTAGE MINIMUM TRIGGER TIME vs VCC CHARACTERISTICS 10.00 1.20 Output Pulse-Duration Constant − K trr − Minimum Retrigger Time − µs RT = 1 kΩ TA = 25°C CT = 0.01 µF 1.00 CT = 1000 pF 0.10 CT = 100 pF 0.01 0 1 2 3 4 5 RT = 10 kΩ TA = 25°C tW = K × CT × RT 1.15 1.10 CT = 1000 pF 1.05 CT = 0.01 µF 1.00 0.95 CT = 0.1 µF 0.90 1.5 6 2 2.5 3 3.5 4 4.5 5 VCC − Supply Voltage − V VCC − Supply Voltage − V Figure 7. 0.0001 TA = 25°C VCC = 5 V DISTRIBUTION OF UNITS vs OUTPUT PULSE DURATION Relative Frequency of Occurance CT − External Capacitor Value − µ F For Capacitor Values of 0.001 µF or Greater, K = 1.0 (K is Independent of R) 0.00001 1.00 1.50 2.00 6 Figure 8. EXTERNAL CAPACITANCE VALUE vs MULTIPLIER FACTOR 0.001 5.5 VCC = 5 V TA = 25°C CT = 50 pF RT = 10 kW Mean = 856 ns Median = 856 ns Std. Dev. = 3.5 ns 2.50 3.00 3.50 4.00 4.50 Multiplier Factor − K −3 Std. Dev. +3 Std. Dev. Median 99% of Data Units tw − Output Pulse Duration Figure 9. Figure 10. Submit Documentation Feedback 11 PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) (3) Device Marking (4/5) (6) SN74AHC123AMDREP ACTIVE SOIC D 16 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -55 to 125 AHC123AEP SN74AHC123AMDREPG4 ACTIVE SOIC D 16 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -55 to 125 AHC123AEP V62/06665-01XE ACTIVE SOIC D 16 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -55 to 125 AHC123AEP (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of