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SN74HC258DR
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
markdownSN74HC258DR
Texas Instruments · Signal Switches, Multiplexers, Decoders · SOIC-16
SN74HC258DR 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 address/select input for all four multiplexers; selects data source A (low) or B (high) for every channel. |
| 2 | 1A | input | Data input A for multiplexer channel 1, selected when A/B is low. |
| 3 | 1B | input | Data input B for multiplexer channel 1, selected when A/B is high. |
| 4 | 1Y | tri_state | 3-state inverted data output for multiplexer channel 1; goes to high-impedance state when G is high. |
| 5 | 2A | input | Data input A for multiplexer channel 2, selected when A/B is low. |
| 6 | 2B | input | Data input B for multiplexer channel 2, selected when A/B is high. |
| 7 | 2Y | tri_state | 3-state inverted data output for multiplexer channel 2; goes to high-impedance state when G is high. |
| 8 | GND | power_in | Ground reference (0 V) supply pin. |
| 9 | 3Y | tri_state | 3-state inverted data output for multiplexer channel 3; goes to high-impedance state when G is high. |
| 10 | 3B | input | Data input B for multiplexer channel 3, selected when A/B is high. |
| 11 | 3A | input | Data input A for multiplexer channel 3, selected when A/B is low. |
| 12 | 4Y | tri_state | 3-state inverted data output for multiplexer channel 4; goes to high-impedance state when G is high. |
| 13 | 4B | input | Data input B for multiplexer channel 4, selected when A/B is high. |
| 14 | 4A | input | Data input A for multiplexer channel 4, selected when A/B is low. |
| 15 | G | input | Active-low strobe/output-enable input; a high level forces all four Y outputs into the high-impedance state. |
| 16 | VCC | power_in | Positive supply voltage, recommended operating range 2 V to 6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16 |
| Category | Logic |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
SN74HC258DR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files:
sn74hc258dr-etched.step/sn74hc258dr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74hc258dr.step/sn74hc258dr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (29 pp, sha256
d8caefbacd746d02, retrieved 2026-09-24, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-sonnet-5(text+vision), consensusclaude-opus-4-8(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).