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SN74LS157DR

Public Made by Adom

by adom

lingxingic Signal Switches, Multiplexers, Decoders, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SN74LS157DR

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74ls157dr.step / sn74ls157dr.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF