component
74VHC123AMX
Public Made by Adomby adom
onsemi Monostable Multivibrators, SOIC-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
markdown74VHC123AMX
onsemi · Monostable Multivibrators · SOIC-16
74VHC123AMX from onsemi, in a SOIC-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 trigger input of multivibrator 1; can be used as an inhibit input. |
| 2 | 1B | input | Positive-edge trigger input of multivibrator 1; can be used as an inhibit input. |
| 3 | 1CLR | input | Active-low reset input of multivibrator 1; a LOW resets the one-shot, and a rising edge can trigger it while A is LOW and B is HIGH. |
| 4 | 1Q̄ | output | Complementary output of multivibrator 1. |
| 5 | 2Q | output | Output of multivibrator 2. |
| 6 | 2Cx | passive | External capacitor connection for multivibrator 2; Cx has no limit. |
| 7 | 2Rx/Cx | passive | External resistor/capacitor common node for multivibrator 2; Rx must be >5kΩ at VCC=2.0V and >1kΩ at VCC>3.0V. |
| 8 | GND | power_in | Ground. |
| 9 | 2A | input | Negative-edge trigger input of multivibrator 2; can be used as an inhibit input. |
| 10 | 2B | input | Positive-edge trigger input of multivibrator 2; can be used as an inhibit input. |
| 11 | 2CLR | input | Active-low reset input of multivibrator 2; a LOW resets the one-shot, and a rising edge can trigger it while A is LOW and B is HIGH. |
| 12 | 2Q̄ | output | Complementary output of multivibrator 2. |
| 13 | 1Q | output | Output of multivibrator 1. |
| 14 | 1Cx | passive | External capacitor connection for multivibrator 1; Cx has no limit. |
| 15 | 1Rx/Cx | passive | External resistor/capacitor common node for multivibrator 1; Rx must be >5kΩ at VCC=2.0V and >1kΩ at VCC>3.0V. |
| 16 | VCC | power_in | Supply voltage, recommended 2.0V to 5.5V (absolute maximum -0.5V to +7.0V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOIC-16 |
| Category | Logic |
| 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 | 6 | ||
| DC input voltage (absolute maximum) | VIN | -0.5 | 7 | V | 6 | ||
| Input diode current (absolute maximum) | IIK | -20 | mA | 6 | |||
| Output diode current (absolute maximum) | IOK | -20 | 20 | mA | 6 | ||
| DC output current (absolute maximum) | IOUT | -25 | 25 | mA | 6 | ||
| DC VCC/GND current (absolute maximum) | ICC | -50 | 50 | mA | 6 | ||
| Storage temperature (absolute maximum) | TSTG | -65 | 150 | °C | 6 | ||
| Supply voltage (recommended operating) | VCC | 2 | 5.5 | V | 6 | ||
| Input voltage (recommended operating) | VIN | 0 | 5.5 | V | 6 | ||
| Operating temperature | TOPR | -40 | 85 | °C | 6 | ||
| Input rise and fall time (CLR only) | tr, tf | 0 | 100 | ns/V | VCC = 3.3 V ± 0.3 V | 6 | |
| Input rise and fall time (CLR only) | tr, tf | 0 | 20 | ns/V | VCC = 5.0 V ± 0.5 V | 6 | |
| External resistor Rx | Rx | 5 | kΩ | VCC = 2.0 V | 6 | ||
| External resistor Rx | Rx | 1 | kΩ | VCC > 3.0 V | 6 | ||
| HIGH level input voltage | VIH | 1.5 | V | VCC = 2.0 V; TA = -40 to 85°C | 7 | ||
| HIGH level input voltage | VIH | 0.7 | x VCC | VCC = 3.0 to 5.5 V; TA = -40 to 85°C | 7 | ||
| LOW level input voltage | VIL | 0.5 | V | VCC = 2.0 V; TA = -40 to 85°C | 7 | ||
| LOW level input voltage | VIL | 0.3 | x VCC | VCC = 3.0 to 5.5 V; TA = -40 to 85°C | 7 | ||
| HIGH level output voltage | VOH | 1.9 | 2 | V | VCC = 2.0 V; VIN = VIH or VIL; IOH = -50µA; TA = -40 to 85°C | 7 | |
| HIGH level output voltage | VOH | 2.9 | 3 | V | VCC = 3.0 V; VIN = VIH or VIL; IOH = -50µA; TA = -40 to 85°C | 7 | |
| HIGH level output voltage | VOH | 4.4 | 4.5 | V | VCC = 4.5 V; VIN = VIH or VIL; IOH = -50µA; TA = -40 to 85°C | 7 | |
| HIGH level output voltage | VOH | 2.48 | V | VCC = 3.0 V; VIN = VIH or VIL; IOH = -4mA; TA = -40 to 85°C | 7 | ||
| HIGH level output voltage | VOH | 3.8 | V | VCC = 4.5 V; VIN = VIH or VIL; IOH = -8mA; TA = -40 to 85°C | 7 | ||
| LOW level output voltage | VOL | 0 | 0.1 | V | VCC = 2.0 V; VIN = VIH or VIL; IOL = 50µA; TA = -40 to 85°C | 7 | |
| LOW level output voltage | VOL | 0.44 | V | VCC = 3.0 V; VIN = VIH or VIL; IOL = 4mA; TA = -40 to 85°C | 7 | ||
| Input leakage current | IIN | -1 | 1 | µA | VIN = 5.5 V or GND; VCC = 0-5.5 V; TA = -40 to 85°C | 7 | |
| Rx/Cx terminal off-state current | IIN | -2.5 | 2.5 | µA | VCC = 5.5 V; VIN = VCC or GND; TA = -40 to 85°C | 7 | |
| Quiescent supply current | ICC | 40 | µA | VCC = 5.5 V; VIN = VCC or GND; TA = -40 to 85°C | 7 | ||
| Active-state supply current (per circuit) | ICC | 160 | 280 | µA | VCC = 3.0 V; VIN = VCC or GND; Rx/Cx = 0.5 VCC; TA = -40 to 85°C | 7 | |
| Active-state supply current (per circuit) | ICC | 380 | 650 | µA | VCC = 4.5 V; VIN = VCC or GND; Rx/Cx = 0.5 VCC; TA = -40 to 85°C | 7 | |
| Propagation delay (A, B to Q, Q̅) | tPLH, tPHL | 1 | 13.4 | 24 | ns | VCC = 3.3 ± 0.3 V; CL = 15 pF; TA = -40 to 85°C | 8 |
| Propagation delay (A, B to Q, Q̅) | tPLH, tPHL | 1 | 15.9 | 27.5 | ns | VCC = 3.3 ± 0.3 V; CL = 50 pF; TA = -40 to 85°C | 8 |
| Propagation delay (A, B to Q, Q̅) | tPLH, tPHL | 1 | 8.1 | 14 | ns | VCC = 5.0 ± 0.5 V; CL = 15 pF; TA = -40 to 85°C | 8 |
| Propagation delay (A, B to Q, Q̅) | tPLH, tPHL | 1 | 9.6 | 16 | ns | VCC = 5.0 ± 0.5 V; CL = 50 pF; TA = -40 to 85°C | 8 |
| Propagation delay (CLR trigger to Q, Q̅) | tPLH, tPHL | 1 | 14.5 | 26 | ns | VCC = 3.3 ± 0.3 V; CL = 15 pF; TA = -40 to 85°C | 8 |
| Propagation delay (CLR trigger to Q, Q̅) | tPLH, tPHL | 1 | 17 | 29.5 | ns | VCC = 3.3 ± 0.3 V; CL = 50 pF; TA = -40 to 85°C | 8 |
| Propagation delay (CLR trigger to Q, Q̅) | tPLH, tPHL | 1 | 8.7 | 15 | ns | VCC = 5.0 ± 0.5 V; CL = 15 pF; TA = -40 to 85°C | 8 |
| Propagation delay (CLR trigger to Q, Q̅) | tPLH, tPHL | 1 | 10.2 | 17 | ns | VCC = 5.0 ± 0.5 V; CL = 50 pF; TA = -40 to 85°C | 8 |
| Propagation delay (CLR to Q, Q̅) | tPLH, tPHL | 1 | 10.3 | 18.5 | ns | VCC = 3.3 ± 0.3 V; CL = 15 pF; TA = -40 to 85°C | 8 |
| Propagation delay (CLR to Q, Q̅) | tPLH, tPHL | 1 | 12.8 | 22 | ns | VCC = 3.3 ± 0.3 V; CL = 50 pF; TA = -40 to 85°C | 8 |
| Propagation delay (CLR to Q, Q̅) | tPLH, tPHL | 1 | 6.3 | 11 | ns | VCC = 5.0 ± 0.5 V; CL = 15 pF; TA = -40 to 85°C | 8 |
| Propagation delay (CLR to Q, Q̅) | tPLH, tPHL | 1 | 7.8 | 13 | ns | VCC = 5.0 ± 0.5 V; CL = 50 pF; TA = -40 to 85°C | 8 |
| Output pulse width | tWOUT | 160 | 300 | ns | VCC = 3.3 ± 0.3 V; CL = 50 pF; Cx = 28 pF; Rx = 2 kΩ; TA = -40 to 85°C | 8 | |
| Output pulse width | tWOUT | 133 | 240 | ns | VCC = 5.0 ± 0.5 V; CL = 50 pF; Cx = 28 pF; Rx = 2 kΩ; TA = -40 to 85°C | 8 | |
| Output pulse width | tWOUT | 90 | 100 | 110 | µs | VCC = 3.3 ± 0.3 V; CL = 50 pF; Cx = 0.01 µF; Rx = 10 kΩ; TA = -40 to 85°C | 8 |
| Output pulse width | tWOUT | 0.9 | 1 | 1.1 | ms | VCC = 3.3 ± 0.3 V; CL = 50 pF; Cx = 0.1 µF; Rx = 1 kΩ; TA = -40 to 85°C | 8 |
| Output pulse width error between circuits (same package) | ΔtWOUT | -1 | 1 | % | Between circuits (in same package) | 8 | |
| Minimum trigger pulse width | tW(L), tW(H) | 5 | ns | VCC = 3.3 V | 9 | ||
| Minimum clear pulse width | tW(L) | 5 | ns | VCC = 3.3 V | 9 | ||
| Minimum retrigger time | tRR | 60 | ns | VCC = 3.3 ± 0.3 V; Rx = 1 kΩ; Cx = 100 pF | 9 | ||
| Minimum retrigger time | tRR | 39 | ns | VCC = 5.0 ± 0.5 V; Rx = 1 kΩ; Cx = 100 pF | 9 | ||
| Minimum retrigger time | tRR | 1.5 | µs | VCC = 3.3 V; Rx = 1 kΩ; Cx = 0.01 µF | 9 | ||
| Minimum retrigger time | tRR | 1.2 | µs | VCC = 5.0 V; Rx = 1 kΩ; Cx = 0.01 µF | 9 |
CAD (KiCad official)
- Symbol:
74VHC123AMX - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files:
74vhc123amx-etched.step/74vhc123amx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74vhc123amx.step/74vhc123amx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (14 pp, sha256
83f1f5557ec7ba1b, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).