component
CD74AC157M96
Public Made by Adomby adom
Texas Instruments Signal Switches, Multiplexers, Decoders, 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
markdownCD74AC157M96
Texas Instruments · Signal Switches, Multiplexers, Decoders · SOIC-16
CD74AC157M96 from Texas Instruments, 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 | A/B | input | Common select input: low selects the 1A, 2A, 3A and 4A sources and high selects the 1B, 2B, 3B and 4B sources, per the function table. |
| 2 | 1A | input | Channel 1 data input from source A, routed to 1Y when A/B is low and G is low; unused inputs must be held at VCC or GND. |
| 3 | 1B | input | Channel 1 data input from source B, routed to 1Y when A/B is high and G is low; unused inputs must be held at VCC or GND. |
| 4 | 1Y | output | Channel 1 true data output, forced low when strobe G is high; drive capability is ±24 mA at 4.5 V to 5.5 V. |
| 5 | 2A | input | Channel 2 data input from source A, routed to 2Y when A/B is low and G is low; unused inputs must be held at VCC or GND. |
| 6 | 2B | input | Channel 2 data input from source B, routed to 2Y when A/B is high and G is low; unused inputs must be held at VCC or GND. |
| 7 | 2Y | output | Channel 2 true data output, forced low when strobe G is high; drive capability is ±24 mA at 4.5 V to 5.5 V. |
| 8 | GND | power_in | Ground reference; continuous current through VCC or GND is limited to ±100 mA (absolute maximum). |
| 9 | 3Y | output | Channel 3 true data output, forced low when strobe G is high; drive capability is ±24 mA at 4.5 V to 5.5 V. |
| 10 | 3B | input | Channel 3 data input from source B, routed to 3Y when A/B is high and G is low; unused inputs must be held at VCC or GND. |
| 11 | 3A | input | Channel 3 data input from source A, routed to 3Y when A/B is low and G is low; unused inputs must be held at VCC or GND. |
| 12 | 4Y | output | Channel 4 true data output, forced low when strobe G is high; drive capability is ±24 mA at 4.5 V to 5.5 V. |
| 13 | 4B | input | Channel 4 data input from source B, routed to 4Y when A/B is high and G is low; unused inputs must be held at VCC or GND. |
| 14 | 4A | input | Channel 4 data input from source A, routed to 4Y when A/B is low and G is low; unused inputs must be held at VCC or GND. |
| 15 | G | input | Common active-low strobe: when high, all outputs are forced low; when low, the selected 4-bit word is routed to the outputs. |
| 16 | VCC | power_in | Supply voltage, 1.5 V to 5.5 V recommended operating range (absolute maximum 6 V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| 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 | VCC | 1.5 | 5.5 | V | TA = -55°C to 125°C | 3 | |
| High-level input voltage | VIH | 1.2 | V | VCC = 1.5 V; TA = -55°C to 125°C | 3 | ||
| High-level input voltage | VIH | 2.1 | V | VCC = 3 V; TA = -55°C to 125°C | 3 | ||
| High-level input voltage | VIH | 3.85 | V | VCC = 5.5 V; TA = -55°C to 125°C | 3 | ||
| Low-level input voltage | VIL | 0.3 | V | VCC = 1.5 V; TA = -55°C to 125°C | 3 | ||
| Low-level input voltage | VIL | 0.9 | V | VCC = 3 V; TA = -55°C to 125°C | 3 | ||
| Low-level input voltage | VIL | 1.65 | V | VCC = 5.5 V; TA = -55°C to 125°C | 3 | ||
| Input voltage | VI | 0 | V | TA = -55°C to 125°C | 3 | ||
| Output voltage | VO | 0 | V | TA = -55°C to 125°C | 3 | ||
| High-level output current | IOH | -24 | mA | VCC = 4.5 V to 5.5 V; TA = -55°C to 125°C | 3 | ||
| Low-level output current | IOL | 24 | mA | VCC = 4.5 V to 5.5 V; TA = -55°C to 125°C | 3 | ||
| Input transition rise or fall rate | Δt/Δv | 50 | ns/V | VCC = 1.5 V to 3 V; TA = -55°C to 125°C | 3 | ||
| Input transition rise or fall rate | Δt/Δv | 20 | ns/V | VCC = 3.6 V to 5.5 V; TA = -55°C to 125°C | 3 | ||
| Supply voltage range | VCC | -0.5 | 6 | V | 2 | ||
| Input clamp current | IIK | -20 | 20 | mA | VI < 0 V or VI > VCC (see Note 1) | 2 | |
| Output clamp current | IOK | -50 | 50 | mA | VO < 0 V or VO > VCC (see Note 1) | 2 | |
| Continuous output current | IO | -50 | 50 | mA | VO > 0 V or VO < VCC | 2 | |
| Continuous current through VCC or GND | -100 | 100 | mA | 2 | |||
| Storage temperature range | Tstg | -65 | 150 | °C | 2 | ||
| High-level output voltage | VOH | 1.4 | V | VI = VIH or VIL, IOH = -50 µA, VCC = 1.5 V; TA = -55°C to 125°C | 3 | ||
| High-level output voltage | VOH | 2.9 | V | VI = VIH or VIL, IOH = -50 µA, VCC = 3 V; TA = -55°C to 125°C | 3 | ||
| High-level output voltage | VOH | 4.4 | V | VI = VIH or VIL, IOH = -50 µA, VCC = 4.5 V; TA = -55°C to 125°C | 3 | ||
| High-level output voltage | VOH | 2.4 | V | VI = VIH or VIL, IOH = -4 mA, VCC = 3 V; TA = -55°C to 125°C | 3 | ||
| High-level output voltage | VOH | 3.7 | V | VI = VIH or VIL, IOH = -24 mA, VCC = 4.5 V; TA = -55°C to 125°C | 3 | ||
| Low-level output voltage | VOL | 0.1 | V | VI = VIH or VIL, IOL = 50 µA, VCC = 1.5 V; TA = -55°C to 125°C | 3 | ||
| Low-level output voltage | VOL | 0.5 | V | VI = VIH or VIL, IOL = 12 mA, VCC = 3 V; TA = -55°C to 125°C | 3 | ||
| Input leakage current | II | -1 | 1 | µA | VI = VCC or GND, VCC = 5.5 V; TA = -55°C to 125°C | 3 | |
| Supply current | ICC | 160 | µA | VI = VCC or GND, IO = 0, VCC = 5.5 V; TA = -55°C to 125°C | 3 | ||
| Propagation delay, A or B to Y (low-to-high) | tPLH | 106 | ns | VCC = 1.5 V, CL = 50 pF; TA = -55°C to 125°C | 4 | ||
| Propagation delay, A or B to Y (high-to-low) | tPHL | 106 | ns | VCC = 1.5 V, CL = 50 pF; TA = -55°C to 125°C | 4 | ||
| Propagation delay, A/B to Y (low-to-high) | tPLH | 180 | ns | VCC = 1.5 V, CL = 50 pF; TA = -55°C to 125°C | 4 | ||
| Propagation delay, A/B to Y (high-to-low) | tPHL | 180 | ns | VCC = 1.5 V, CL = 50 pF; TA = -55°C to 125°C | 4 | ||
| Propagation delay, G to Y (low-to-high) | tPLH | 169 | ns | VCC = 1.5 V, CL = 50 pF; TA = -55°C to 125°C | 4 | ||
| Propagation delay, G to Y (high-to-low) | tPHL | 169 | ns | VCC = 1.5 V, CL = 50 pF; TA = -55°C to 125°C | 4 | ||
| Propagation delay, A or B to Y (low-to-high) | tPLH | 3 | 11.9 | ns | VCC = 3.3 V ± 0.3 V, CL = 50 pF; TA = -55°C to 125°C | 4 | |
| Propagation delay, A or B to Y (high-to-low) | tPHL | 3 | 11.9 | ns | VCC = 3.3 V ± 0.3 V, CL = 50 pF; TA = -55°C to 125°C | 4 | |
| Propagation delay, A/B to Y (low-to-high) | tPLH | 5.1 | 20.3 | ns | VCC = 3.3 V ± 0.3 V, CL = 50 pF; TA = -55°C to 125°C | 4 | |
| Propagation delay, A/B to Y (high-to-low) | tPHL | 5.1 | 20.3 | ns | VCC = 3.3 V ± 0.3 V, CL = 50 pF; TA = -55°C to 125°C | 4 | |
| Propagation delay, G to Y (low-to-high) | tPLH | 4.7 | 18.9 | ns | VCC = 3.3 V ± 0.3 V, CL = 50 pF; TA = -55°C to 125°C | 4 | |
| Propagation delay, G to Y (high-to-low) | tPHL | 4.7 | 18.9 | ns | VCC = 3.3 V ± 0.3 V, CL = 50 pF; TA = -55°C to 125°C | 4 | |
| Propagation delay, A or B to Y (low-to-high) | tPLH | 2.1 | 8.5 | ns | VCC = 5 V ± 0.5 V, CL = 50 pF; TA = -55°C to 125°C | 4 | |
| Propagation delay, A or B to Y (high-to-low) | tPHL | 2.1 | 8.5 | ns | VCC = 5 V ± 0.5 V, CL = 50 pF; TA = -55°C to 125°C | 4 | |
| Propagation delay, A/B to Y (low-to-high) | tPLH | 3.6 | 14.5 | ns | VCC = 5 V ± 0.5 V, CL = 50 pF; TA = -55°C to 125°C | 4 | |
| Propagation delay, A/B to Y (high-to-low) | tPHL | 3.6 | 14.5 | ns | VCC = 5 V ± 0.5 V, CL = 50 pF; TA = -55°C to 125°C | 4 | |
| Propagation delay, G to Y (low-to-high) | tPLH | 3.4 | 13.5 | ns | VCC = 5 V ± 0.5 V, CL = 50 pF; TA = -55°C to 125°C | 4 | |
| Propagation delay, G to Y (high-to-low) | tPHL | 3.4 | 13.5 | ns | VCC = 5 V ± 0.5 V, CL = 50 pF; TA = -55°C to 125°C | 4 | |
| Package thermal impedance, M package (SOIC) | θJA | 73 | °C/W | Calculated per JESD 51-7 (see Note 2) | 2 |
CAD (KiCad official)
- Symbol:
CD74AC157M96 - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files:
cd74ac157m96-etched.step/cd74ac157m96-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cd74ac157m96.step/cd74ac157m96.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (15 pp, sha256
301427dd23d14786, retrieved 2026-10-21, tier: manufacturer) - 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).