component
74AHC123AD-Q100J
Public Made by Adomby adom
Nexperia Monostable Multivibrators, SO-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdown74AHC123AD-Q100J
Nexperia · Monostable Multivibrators · SO-16
74AHC123AD-Q100J from Nexperia, in a SO-16. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1A | input | Negative-edge triggered input 1; the inputs are overvoltage tolerant to 5.5 V. |
| 2 | 1B | input | Positive-edge triggered input 1; the inputs are overvoltage tolerant to 5.5 V. |
| 3 | 1RD | input | Direct reset LOW and positive-edge triggered input 1; a LOW level on this input terminates the output pulse. |
| 4 | 1Q | output | Active LOW output 1 (complement of 1Q at pin 13); the overbar is not present in the extracted text. |
| 5 | 2Q | output | Active HIGH output 2. |
| 6 | 2CEXT | passive | External capacitor connection 2; for minimum noise generation the datasheet recommends grounding this pin externally to GND (pin 8). |
| 7 | 2REXT/CEXT | passive | External resistor and capacitor connection 2; REXT must be at least 5 kΩ at VCC = 2.0 V and at least 1 kΩ when VCC > 3.0 V. |
| 8 | GND | power_in | Ground (0 V). |
| 9 | 2A | input | Negative-edge triggered input 2; the inputs are overvoltage tolerant to 5.5 V. |
| 10 | 2B | input | Positive-edge triggered input 2; the inputs are overvoltage tolerant to 5.5 V. |
| 11 | 2RD | input | Direct reset LOW and positive-edge triggered input 2; a LOW level on this input terminates the output pulse. |
| 12 | 2Q | output | Active LOW output 2 (complement of 2Q at pin 5); the overbar is not present in the extracted text. |
| 13 | 1Q | output | Active HIGH output 1. |
| 14 | 1CEXT | passive | External capacitor connection 1; for minimum noise generation the datasheet recommends grounding this pin externally to GND (pin 8). |
| 15 | 1REXT/CEXT | passive | External resistor and capacitor connection 1; REXT must be at least 5 kΩ at VCC = 2.0 V and at least 1 kΩ when VCC > 3.0 V. |
| 16 | VCC | power_in | Supply voltage: 2.0 V to 5.5 V for the 74AHC123A-Q100 variant (this MPN, which is CMOS input level). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SO-16 |
| Category | Logic ICs |
| Pins | 16 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage (absolute maximum) | VCC | -0.5 | 7 | V | 7 | ||
| Input voltage (absolute maximum) | VI | -0.5 | 7 | V | 7 | ||
| Input clamping current | IIK | -20 | mA | VI < -0.5 V | 7 | ||
| Output clamping current | IOK | -20 | 20 | mA | VO < -0.5 V or VO > VCC + 0.5 V | 7 | |
| Output current | IO | -25 | 25 | mA | VO = -0.5 V to (VCC + 0.5 V) | 7 | |
| Supply current | ICC | 75 | mA | 7 | |||
| Ground current | IGND | -75 | mA | 7 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 7 | ||
| Total power dissipation | Ptot | 500 | mW | Tamb = -40 °C to +125 °C; SO16 derates linearly 12.4 mW/K above 110 °C | 7 | ||
| Supply voltage (recommended) | VCC | 2 | 5 | 5.5 | V | 74AHC123A-Q100 column | 7 |
| Input voltage (recommended) | VI | 0 | 5.5 | V | 74AHC123A-Q100 column | 7 | |
| Output voltage (recommended) | VO | 0 | V | 74AHC123A-Q100 column; max printed as VCC | 7 | ||
| Ambient temperature | Tamb | -40 | 25 | 125 | °C | 74AHC123A-Q100 column | 7 |
| Input transition rise and fall rate | Δt/ΔV | 100 | ns/V | VCC = 3.3 V ± 0.3 V | 7 | ||
| Input transition rise and fall rate | Δt/ΔV | 20 | ns/V | VCC = 5.0 V ± 0.5 V | 7 | ||
| External resistance REXT | REXT | 5 | kΩ | VCC = 2.0 V | 12 | ||
| External resistance REXT | REXT | 1 | kΩ | VCC > 3.0 V | 12 | ||
| HIGH-level input voltage | VIH | 1.5 | V | VCC = 2.0 V; -40 °C to +125 °C | 8 | ||
| HIGH-level input voltage | VIH | 2.1 | V | VCC = 3.0 V; -40 °C to +125 °C | 8 | ||
| HIGH-level input voltage | VIH | 3.85 | V | VCC = 5.5 V; -40 °C to +125 °C | 8 | ||
| LOW-level input voltage | VIL | 0.5 | V | VCC = 2.0 V; -40 °C to +125 °C | 8 | ||
| LOW-level input voltage | VIL | 0.9 | V | VCC = 3.0 V; -40 °C to +125 °C | 8 | ||
| LOW-level input voltage | VIL | 1.65 | V | VCC = 5.5 V; -40 °C to +125 °C | 8 | ||
| HIGH-level output voltage | VOH | 1.9 | 2 | V | VI = VIH or VIL; IO = -50 μA; VCC = 2.0 V; -40 °C to +125 °C | 8 | |
| HIGH-level output voltage | VOH | 2.9 | 3 | V | VI = VIH or VIL; IO = -50 μA; VCC = 3.0 V; -40 °C to +125 °C | 8 | |
| HIGH-level output voltage | VOH | 4.4 | 4.5 | V | VI = VIH or VIL; IO = -50 μA; VCC = 4.5 V; -40 °C to +125 °C | 8 | |
| HIGH-level output voltage | VOH | 2.4 | V | VI = VIH or VIL; IO = -4.0 mA; VCC = 3.0 V; -40 °C to +125 °C | 8 | ||
| HIGH-level output voltage | VOH | 3.7 | V | VI = VIH or VIL; IO = -8.0 mA; VCC = 4.5 V; -40 °C to +125 °C | 8 | ||
| LOW-level output voltage | VOL | 0 | 0.1 | V | VI = VIH or VIL; IO = 50 μA; VCC = 2.0 V; -40 °C to +125 °C | 8 | |
| LOW-level output voltage | VOL | 0.55 | V | VI = VIH or VIL; IO = 4.0 mA; VCC = 3.0 V; -40 °C to +125 °C | 8 | ||
| Input leakage current | II | -10 | 10 | μA | nREXT/CEXT; VI = 5.5 V or GND; VCC = 0 V to 5.5 V; -40 °C to +125 °C | 8 | |
| Input leakage current | II | -2 | 2 | μA | pins nA, nB, nRD; -40 °C to +125 °C | 8 | |
| Quiescent supply current | ICC | 80 | μA | VI = VCC or GND; IO = 0 A; VCC = 5.5 V; -40 °C to +125 °C | 8 | ||
| Active-state supply current (per circuit) | ICC | 160 | 280 | μA | active state (per circuit); VI = VCC or GND; VCC = 3.0 V; typ 25 °C, max -40 °C to +125 °C | 8 | |
| Active-state supply current (per circuit) | ICC | 380 | 650 | μA | active state (per circuit); VI = VCC or GND; VCC = 4.5 V; typ 25 °C, max -40 °C to +125 °C | 8 | |
| Active-state supply current (per circuit) | ICC | 560 | 975 | μA | active state (per circuit); VI = VCC or GND; VCC = 5.5 V; typ 25 °C, max -40 °C to +125 °C | 8 | |
| Input capacitance | CI | 5 | 10 | pF | 8 | ||
| Propagation delay nA/nB to nQ, nQ | tpd | 1 | 7.4 | 26 | ns | VCC = 3.0 V to 3.6 V; CL = 15 pF; -40 °C to +125 °C | 10 |
| Propagation delay nA/nB to nQ, nQ | tpd | 1 | 10.5 | 30 | ns | VCC = 3.0 V to 3.6 V; CL = 50 pF; -40 °C to +125 °C | 10 |
| Propagation delay nA/nB to nQ, nQ | tpd | 1 | 5.1 | 15.5 | ns | VCC = 4.5 V to 5.5 V; CL = 15 pF; -40 °C to +125 °C | 10 |
| Propagation delay nA/nB to nQ, nQ | tpd | 1 | 7.3 | 17.5 | ns | VCC = 4.5 V to 5.5 V; CL = 50 pF; -40 °C to +125 °C | 10 |
| Propagation delay nRD to nQ, nQ | tpd | 1 | 8.2 | 28 | ns | VCC = 3.0 V to 3.6 V; CL = 15 pF; -40 °C to +125 °C | 10 |
| Propagation delay nRD to nQ, nQ | tpd | 1 | 11.7 | 32 | ns | VCC = 3.0 V to 3.6 V; CL = 50 pF; -40 °C to +125 °C | 10 |
| Propagation delay nRD to nQ, nQ | tpd | 1 | 5.6 | 16.5 | ns | VCC = 4.5 V to 5.5 V; CL = 15 pF; -40 °C to +125 °C | 10 |
| Propagation delay nRD to nQ, nQ | tpd | 1 | 8.1 | 19 | ns | VCC = 4.5 V to 5.5 V; CL = 50 pF; -40 °C to +125 °C | 10 |
| Propagation delay nRD to nQ, nQ (reset) | tpd | 1 | 6.4 | 20 | ns | VCC = 3.0 V to 3.6 V; CL = 15 pF; -40 °C to +125 °C | 10 |
| Propagation delay nRD to nQ, nQ (reset) | tpd | 1 | 9.2 | 24.5 | ns | VCC = 3.0 V to 3.6 V; CL = 50 pF; -40 °C to +125 °C | 10 |
| Propagation delay nRD to nQ, nQ (reset) | tpd | 1 | 4.4 | 12 | ns | VCC = 4.5 V to 5.5 V; CL = 15 pF; -40 °C to +125 °C | 10 |
| Propagation delay nRD to nQ, nQ (reset) | tpd | 1 | 6.3 | 14.5 | ns | VCC = 4.5 V to 5.5 V; CL = 50 pF; -40 °C to +125 °C | 10 |
| Minimum input pulse (nA = LOW) | 5 | ns | inputs; nA = LOW; see Fig. 5; VCC = 4.5 V to 5.5 V; -40 °C to +125 °C | 10 | |||
| Minimum input pulse (nB = HIGH) | 5 | ns | inputs; nB = HIGH; see Fig. 5; VCC = 4.5 V to 5.5 V; -40 °C to +125 °C | 10 | |||
| Minimum input pulse (nRD = LOW) | 5 | ns | inputs; nRD = LOW; see Fig. 5; VCC = 4.5 V to 5.5 V; -40 °C to +125 °C | 10 | |||
| Pulse width tW | tW | 85 | 100 | 115 | μs | outputs nQ = LOW and nQ = HIGH; CL = 50 pF; CEXT = 0.01 μF; REXT = 10 kΩ; VCC = 3.0 V to 3.6 V; -40 °C to +125 °C | 10 |
| Pulse width tW | tW | 0.85 | 1 | 1.15 | ms | outputs nQ = LOW and nQ = HIGH; CL = 50 pF; CEXT = 0.1 μF; REXT = 10 kΩ; VCC = 3.0 V to 3.6 V; -40 °C to +125 °C | 10 |
CAD (KiCad official)
- Symbol:
74AHC123AD-Q100J - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SO-16 (KiCad packages3D, STEP)
- 3D model files:
74ahc123ad-q100j-etched.step/74ahc123ad-q100j-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74ahc123ad-q100j.step/74ahc123ad-q100j.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (21 pp, sha256
aba0f1e26c4e70db, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).