component
74HCT157D
Public Made by Adomby adom
Nexperia 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
markdown74HCT157D
Nexperia · Signal Switches, Multiplexers, Decoders · SOIC-16
74HCT157D from Nexperia, 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 | S | input | Common data select input: a HIGH selects data source 1 and a LOW selects data source 0. |
| 2 | 1I0 | input | Data input 1I0 from source 0 for multiplexer 1. |
| 3 | 1I1 | input | Data input 1I1 from source 1 for multiplexer 1. |
| 4 | 1Y | output | Multiplexer 1 output; forced LOW when E is HIGH. |
| 5 | 2I0 | input | Data input 2I0 from source 0 for multiplexer 2. |
| 6 | 2I1 | input | Data input 2I1 from source 1 for multiplexer 2. |
| 7 | 2Y | output | Multiplexer 2 output; forced LOW when E is HIGH. |
| 8 | GND | power_in | Ground (0 V) reference for all voltages. |
| 9 | 3Y | output | Multiplexer 3 output; forced LOW when E is HIGH. |
| 10 | 3I1 | input | Data input 3I1 from source 1 for multiplexer 3. |
| 11 | 3I0 | input | Data input 3I0 from source 0 for multiplexer 3. |
| 12 | 4Y | output | Multiplexer 4 output; forced LOW when E is HIGH. |
| 13 | 4I1 | input | Data input 4I1 from source 1 for multiplexer 4. |
| 14 | 4I0 | input | Data input 4I0 from source 0 for multiplexer 4. |
| 15 | E | input | Enable input, active LOW; a HIGH forces all outputs (1Y to 4Y) LOW. |
| 16 | VCC | power_in | Supply voltage, 2.0 V to 6.0 V for the 74HC157/74HCT157 family. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| 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 | -0.5 | 7 | V | 4 | ||
| input clamping current | IIK | -20 | 20 | mA | VI < -0.5 V or VI > VCC + 0.5 V | 4 | |
| output clamping current | IOK | -20 | 20 | mA | VO < -0.5 V or VO > VCC + 0.5 V | 4 | |
| output current | IO | -25 | 25 | mA | VO = -0.5 V to VCC + 0.5 V | 4 | |
| supply current | ICC | 50 | mA | 4 | |||
| ground current | IGND | -50 | mA | 4 | |||
| storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| total power dissipation | Ptot | 500 | mW | Tamb = -40 °C to +125 °C | 4 | ||
| supply voltage (74HCT157) | VCC | 4.5 | 5 | 5.5 | V | 4 | |
| input voltage (74HCT157) | VI | 0 | V | 4 | |||
| output voltage (74HCT157) | VO | 0 | V | 4 | |||
| ambient temperature (74HCT157) | Tamb | -40 | 25 | 125 | °C | 4 | |
| input transition rise and fall rate (74HCT157) | Δt/ΔV | 1.67 | 139 | ns/V | VCC = 4.5 V | 4 | |
| HIGH-level input voltage (74HCT157) | VIH | 2 | 1.6 | V | VCC = 4.5 V to 5.5 V; typ at Tamb = 25 °C, min at -40 °C to +125 °C | 6 | |
| LOW-level input voltage (74HCT157) | VIL | 1.2 | 0.8 | V | VCC = 4.5 V to 5.5 V; typ at Tamb = 25 °C, max at -40 °C to +125 °C | 6 | |
| HIGH-level output voltage (74HCT157) | VOH | 4.4 | 4.5 | V | VI = VIH or VIL; VCC = 4.5 V; IO = -20 μA; typ at Tamb = 25 °C, min at -40 °C to +125 °C | 6 | |
| HIGH-level output voltage (74HCT157) | VOH | 3.7 | 4.32 | V | VI = VIH or VIL; VCC = 4.5 V; IO = -4 mA; typ at Tamb = 25 °C, min at -40 °C to +125 °C | 6 | |
| LOW-level output voltage (74HCT157) | VOL | 0 | 0.1 | V | VI = VIH or VIL; VCC = 4.5 V; IO = 20 μA; typ at Tamb = 25 °C, max at -40 °C to +125 °C | 6 | |
| LOW-level output voltage (74HCT157) | VOL | 0.15 | 0.4 | V | VI = VIH or VIL; VCC = 4.5 V; IO = 4.0 mA; typ at Tamb = 25 °C, max at -40 °C to +125 °C | 6 | |
| input leakage current (74HCT157) | II | -1 | 1 | μA | VI = VCC or GND; VCC = 5.5 V; min/max at -40 °C to +125 °C | 6 | |
| supply current (74HCT157) | ICC | 160 | μA | VI = VCC or GND; IO = 0 A; VCC = 5.5 V; max at -40 °C to +125 °C | 6 | ||
| additional supply current per input pin, nI0 and nI1 inputs (74HCT157) | ΔICC | 100 | 490 | μA | VI = VCC - 2.1 V; IO = 0 A; other inputs at VCC or GND; VCC = 4.5 V to 5.5 V; per input pin; nI0, nI1 inputs; typ at Tamb = 25 °C, max at -40 °C to +125 °C | 6 | |
| additional supply current per input pin, E input (74HCT157) | ΔICC | 60 | 294 | μA | VI = VCC - 2.1 V; IO = 0 A; other inputs at VCC or GND; VCC = 4.5 V to 5.5 V; per input pin; E input; typ at Tamb = 25 °C, max at -40 °C to +125 °C | 6 | |
| additional supply current per input pin, S input (74HCT157) | ΔICC | 100 | 490 | μA | VI = VCC - 2.1 V; IO = 0 A; other inputs at VCC or GND; VCC = 4.5 V to 5.5 V; per input pin; S input; typ at Tamb = 25 °C, max at -40 °C to +125 °C | 6 | |
| propagation delay nI0, nI1 to nY (74HCT157) | tpd | 16 | 41 | ns | VCC = 4.5 V; see Fig. 5; typ at Tamb = 25 °C, max at -40 °C to +125 °C | 8 | |
| propagation delay S to nY (74HCT157) | tpd | 22 | 56 | ns | VCC = 4.5 V; see Fig. 5; typ at Tamb = 25 °C, max at -40 °C to +125 °C | 8 | |
| propagation delay E to nY (74HCT157) | tpd | 15 | 39 | ns | VCC = 4.5 V; see Fig. 6; typ at Tamb = 25 °C, max at -40 °C to +125 °C | 8 | |
| transition time nY (74HCT157) | tt | 7 | 22 | ns | VCC = 4.5 V; see Fig. 5; typ at Tamb = 25 °C, max at -40 °C to +125 °C | 8 | |
| input capacitance (74HCT157) | CI | 3.5 | pF | 6 |
CAD (KiCad official)
- Symbol:
74HCT157D - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files:
74hct157d-etched.step/74hct157d-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74hct157d.step/74hct157d.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (15 pp, sha256
74a09a3b77c06c22, retrieved 2026-10-20, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusoff(skipped (clean text read)), 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).