component
XL74LS157
Public Made by Adomby adom
XINLUDA Signal Switches, Multiplexers, Decoders, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownXL74LS157
XINLUDA · Signal Switches, Multiplexers, Decoders · SOP-16
XL74LS157 from XINLUDA, 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 | A/B | input | Select input that routes the A inputs (low) or B inputs (high) to the outputs; input high-level min 2 V, max 7 V. |
| 2 | 1A | input | Channel 1 data input A, selected when A/B is low. |
| 3 | 1B | input | Channel 1 data input B, selected when A/B is high. |
| 4 | 1Y | output | Channel 1 data output, true data, with IOL up to 8 mA and IOH of -400 µA. |
| 5 | 2A | input | Channel 2 data input A, selected when A/B is low. |
| 6 | 2B | input | Channel 2 data input B, selected when A/B is high. |
| 7 | 2Y | output | Channel 2 data output, true data, with IOL up to 8 mA and IOH of -400 µA. |
| 8 | GND | power_in | Ground reference for the supply. |
| 9 | 3Y | output | Channel 3 data output, true data, with IOL up to 8 mA and IOH of -400 µA. |
| 10 | 3B | input | Channel 3 data input B, selected when A/B is high. |
| 11 | 3A | input | Channel 3 data input A, selected when A/B is low. |
| 12 | 4Y | output | Channel 4 data output, true data, with IOL up to 8 mA and IOH of -400 µA. |
| 13 | 4B | input | Channel 4 data input B, selected when A/B is high. |
| 14 | 4A | input | Channel 4 data input A, selected when A/B is low. |
| 15 | G | input | Strobe input; when high all outputs are forced low, and when low the selected data passes to the outputs. |
| 16 | VCC | power_in | Supply voltage, recommended 4.75 V to 5.25 V (nominal 5 V), absolute maximum 7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | XINLUDA |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | 7 | V | 4 | |||
| Input voltage (74LS157) | VI | 7 | V | 74LS157 | 4 | ||
| Operating free-air temperature range | 0 | 70 | C | SOP package | 4 | ||
| Storage temperature range | Tstg | -65 | 150 | C | 4 | ||
| Supply voltage | VCC | 4.75 | 5 | 5.25 | V | 5 | |
| High-level output current | IOH | -400 | μA | 5 | |||
| Low-level output current | IOL | 8 | mA | 5 | |||
| Operating free-air temperature | TA | 0 | 70 | C | 5 | ||
| High-level input voltage | VIH | 2 | V | 5 | |||
| Low-level input voltage | VIL | 0.8 | V | 5 | |||
| Input clamp voltage | VIK | -1.5 | V | VCC = MIN, II = −18 mA | 5 | ||
| High-level output voltage | VOH | 2.7 | 3.4 | V | VCC = MIN, VIL = 0.8 V, VIH = 2 V, IOH = −400 μA | 5 | |
| Low-level output voltage | VOL | 0.25 | 0.4 | V | VCC = MIN, VIH = 2 V, VIL = VIL MAX, IOL = 4 mA | 5 | |
| Low-level output voltage | VOL | 0.35 | 0.5 | V | VCC = MIN, VIH = 2 V, VIL = VIL MAX, IOL = 8 mA | 5 | |
| Input current at maximum input voltage (A/B or G) | II | 0.2 | mA | VCC = MAX, VI = 7 V | 5 | ||
| Input current at maximum input voltage (A or B) | II | 0.1 | mA | VCC = MAX, VI = 7 V | 5 | ||
| High-level input current (A/B or G) | IIH | 40 | μA | VCC = MAX, VI = 2.7 V | 5 | ||
| High-level input current (A or B) | IIH | 20 | μA | VCC = MAX, VI = 2.7 V | 5 | ||
| Low-level input current (A/B or G) | IIL | -0.8 | mA | VCC = MAX, VI = 0.4 V | 5 | ||
| Low-level input current (A or B) | IIL | -0.4 | mA | VCC = MAX, VI = 0.4 V | 5 | ||
| Short-circuit output current | IOS | -20 | -100 | mA | VCC = MAX | 5 | |
| Supply current | ICC | 9.7 | 16 | mA | VCC = MAX, Output open, All inputs at 4.5V | 5 | |
| Propagation delay time, low-to-high-level output, Data to output | tPLH | 9 | 14 | ns | 6 | ||
| Propagation delay time, high-to-low-level output, Data to output | tPHL | 9 | 14 | ns | 6 | ||
| Propagation delay time, low-to-high-level output, Strobe G to output | tPLH | 13 | 20 | ns | 6 | ||
| Propagation delay time, high-to-low-level output, Strobe G to output | tPHL | 14 | 21 | ns | 6 | ||
| Propagation delay time, low-to-high-level output, Select A/B to output | tPLH | 16 | 23 | ns | 6 | ||
| Propagation delay time, high-to-low-level output, Select A/B to output | tPHL | 18 | 27 | ns | 6 |
CAD (KiCad official)
- Symbol:
XL74LS157 - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files:
xl74ls157-etched.step/xl74ls157-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xl74ls157.step/xl74ls157.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: XINLUDA datasheet (8 pp, sha256
13c66c29b4233e5b, retrieved 2026-10-17, 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).