component
SN74LS157DR
Public Made by Adomby adom
lingxingic Signal Switches, Multiplexers, Decoders, SOP-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
markdownSN74LS157DR
lingxingic · Signal Switches, Multiplexers, Decoders · SOP-16
SN74LS157DR from lingxingic, in a SOP-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 that chooses the source: with E̅ LOW, S LOW routes nI0 to nY and S HIGH routes nI1 to nY (per the function table). |
| 2 | 1I0 | input | Data input from source 0 for multiplexer channel 1, selected when E̅ is LOW and S is LOW. |
| 3 | 1I1 | input | Data input from source 1 for multiplexer channel 1, selected when E̅ is LOW and S is HIGH. |
| 4 | 1Y | output | Multiplexer output for channel 1, forced LOW when E̅ is HIGH. |
| 5 | 2I0 | input | Data input from source 0 for multiplexer channel 2, selected when E̅ is LOW and S is LOW. |
| 6 | 2I1 | input | Data input from source 1 for multiplexer channel 2, selected when E̅ is LOW and S is HIGH. |
| 7 | 2Y | output | Multiplexer output for channel 2, forced LOW when E̅ is HIGH. |
| 8 | GND | power_in | Ground (0 V) reference for all voltages on the device. |
| 9 | 3Y | output | Multiplexer output for channel 3, forced LOW when E̅ is HIGH. |
| 10 | 3I1 | input | Data input from source 1 for multiplexer channel 3, selected when E̅ is LOW and S is HIGH. |
| 11 | 3I0 | input | Data input from source 0 for multiplexer channel 3, selected when E̅ is LOW and S is LOW. |
| 12 | 4Y | output | Multiplexer output for channel 4, forced LOW when E̅ is HIGH. |
| 13 | 4I1 | input | Data input from source 1 for multiplexer channel 4, selected when E̅ is LOW and S is HIGH. |
| 14 | 4I0 | input | Data input from source 0 for multiplexer channel 4, selected when E̅ is LOW and S is LOW. |
| 15 | E | input | Enable input, active LOW; when HIGH all outputs (1Y to 4Y) are forced LOW regardless of the other inputs. |
| 16 | VCC | power_in | Supply voltage; recommended 2.0 V to 6.0 V with an absolute maximum of 7.0 V referenced to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | lingxingic |
| Package | SOP-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 |
|---|---|---|---|---|---|---|---|
| HIGH-level input voltage | VIH | 1.5 | V | Tamb=-40℃ to +125℃; VCC=2.0V | 11 | ||
| HIGH-level input voltage | VIH | 3.15 | V | Tamb=-40℃ to +125℃; VCC=4.5V | 11 | ||
| HIGH-level input voltage | VIH | 4.2 | V | Tamb=-40℃ to +125℃; VCC=6.0V | 11 | ||
| LOW-level input voltage | VIL | 0.5 | V | Tamb=-40℃ to +125℃; VCC=2.0V | 11 | ||
| LOW-level input voltage | VIL | 1.35 | V | Tamb=-40℃ to +125℃; VCC=4.5V | 11 | ||
| LOW-level input voltage | VIL | 1.8 | V | Tamb=-40℃ to +125℃; VCC=6.0V | 11 | ||
| HIGH-level output voltage | VOH | 1.9 | V | Tamb=-40℃ to +125℃; VI=VIH or VIL; IO=-20uA; VCC=2.0V | 11 | ||
| HIGH-level output voltage | VOH | 4.4 | V | Tamb=-40℃ to +125℃; VI=VIH or VIL; IO=-20uA; VCC=4.5V | 11 | ||
| HIGH-level output voltage | VOH | 5.9 | V | Tamb=-40℃ to +125℃; VI=VIH or VIL; IO=-20uA; VCC=6.0V | 11 | ||
| HIGH-level output voltage | VOH | 3.7 | V | Tamb=-40℃ to +125℃; VI=VIH or VIL; IO=-4.0mA; VCC=4.5V | 11 | ||
| HIGH-level output voltage | VOH | 5.2 | V | Tamb=-40℃ to +125℃; VI=VIH or VIL; IO=-5.2mA; VCC=6.0V | 11 | ||
| LOW-level output voltage | VOL | 0.1 | V | Tamb=-40℃ to +125℃; VI=VIH or VIL; IO=20uA; VCC=2.0V | 11 | ||
| LOW-level output voltage | VOL | 0.4 | V | Tamb=-40℃ to +125℃; VI=VIH or VIL; IO=4.0mA; VCC=4.5V | 11 | ||
| input leakage current | II | -1 | 1 | uA | Tamb=-40℃ to +125℃; VI=VCC or GND; VCC=6.0V | 11 | |
| supply current | ICC | 160 | uA | Tamb=-40℃ to +125℃; VI=VCC or GND; IO=0A; VCC=6.0V | 11 | ||
| propagation delay nI0, nI1 to nY | tpd | 190 | ns | Tamb=-40℃ to +125℃; GND=0V; CL=50pF; see Figure 6; VCC=2.0V | 14 | ||
| propagation delay nI0, nI1 to nY | tpd | 38 | ns | Tamb=-40℃ to +125℃; GND=0V; CL=50pF; see Figure 6; VCC=4.5V | 14 | ||
| propagation delay nI0, nI1 to nY | tpd | 32 | ns | Tamb=-40℃ to +125℃; GND=0V; CL=50pF; see Figure 6; VCC=6.0V | 14 | ||
| propagation delay S to nY | tpd | 190 | ns | Tamb=-40℃ to +125℃; GND=0V; CL=50pF; see Figure 6; VCC=2.0V | 14 | ||
| propagation delay S to nY | tpd | 38 | ns | Tamb=-40℃ to +125℃; GND=0V; CL=50pF; see Figure 6; VCC=4.5V | 14 | ||
| propagation delay S to nY | tpd | 32 | ns | Tamb=-40℃ to +125℃; GND=0V; CL=50pF; see Figure 6; VCC=6.0V | 14 | ||
| propagation delay E to nY | tpd | 175 | ns | Tamb=-40℃ to +125℃; GND=0V; CL=50pF; see Figure 7; VCC=2.0V | 14 | ||
| propagation delay E to nY | tpd | 35 | ns | Tamb=-40℃ to +125℃; GND=0V; CL=50pF; see Figure 7; VCC=4.5V | 14 | ||
| propagation delay E to nY | tpd | 30 | ns | Tamb=-40℃ to +125℃; GND=0V; CL=50pF; see Figure 7; VCC=6.0V | 14 | ||
| transition time nY | tt | 110 | ns | Tamb=-40℃ to +125℃; GND=0V; CL=50pF; see Figure 6; VCC=2.0V | 14 | ||
| transition time nY | tt | 22 | ns | Tamb=-40℃ to +125℃; GND=0V; CL=50pF; see Figure 6; VCC=4.5V | 14 | ||
| transition time nY | tt | 19 | ns | Tamb=-40℃ to +125℃; GND=0V; CL=50pF; see Figure 6; VCC=6.0V | 14 | ||
| supply voltage | VCC | -0.5 | 7 | V | 8 | ||
| input clamping current | IIK | -20 | 20 | mA | VI < -0.5V or VI > VCC+0.5V | 8 | |
| output clamping current | IOK | -20 | 20 | mA | VO < -0.5V or VO > VCC+0.5V | 8 | |
| output current | IO | -25 | 25 | mA | VO= -0.5V to (VCC+0.5V) | 8 | |
| supply current | ICC | 50 | mA | 8 | |||
| ground current | IGND | -50 | mA | 8 | |||
| storage temperature | Tstg | -65 | 150 | ℃ | 8 | ||
| total power dissipation | Ptot | 500 | mW | 8 | |||
| soldering temperature | TL | 245 | ℃ | 10s DIP | 8 | ||
| soldering temperature | TL | 260 | ℃ | 10s SOP/TSSOP | 8 | ||
| supply voltage | VCC | 2 | 5 | 6 | V | 8 | |
| input voltage | VI | 0 | V | 8 | |||
| output voltage | VO | 0 | V | 8 | |||
| input transition rise and fall rate | Δt/ΔV | 625 | ns/V | VCC=2.0V | 8 | ||
| input transition rise and fall rate | Δt/ΔV | 1.67 | 139 | ns/V | VCC=4.5V | 8 | |
| input transition rise and fall rate | Δt/ΔV | 83 | ns/V | VCC=6.0V | 8 | ||
| ambient temperature | Tamb | -40 | 125 | ℃ | 8 |
CAD (KiCad official)
- Symbol:
SN74LS157DR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files:
sn74ls157dr-etched.step/sn74ls157dr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74ls157dr.step/sn74ls157dr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: lingxingic datasheet (20 pp, sha256
c9e00cb006f59263, retrieved 2026-10-18, 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).