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SN74ABT540NSR
Public Made by Adomby adom
Texas Instruments Inverters, SOIC-20-208mil. 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
markdownSN74ABT540NSR
Texas Instruments · Inverters · SOIC-20-208mil
SN74ABT540NSR from Texas Instruments, in a SOIC-20-208mil. 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 | OE1 | input | Output Enable 1 input, active-low; all outputs are high-impedance when high. |
| 2 | A1 | input | Data input 1; accepts logic levels from 0V to VCC with VIH ≥2V and VIL ≤0.8V. |
| 3 | A2 | input | Data input 2; accepts logic levels from 0V to VCC with VIH ≥2V and VIL ≤0.8V. |
| 4 | A3 | input | Data input 3; accepts logic levels from 0V to VCC with VIH ≥2V and VIL ≤0.8V. |
| 5 | A4 | input | Data input 4; accepts logic levels from 0V to VCC with VIH ≥2V and VIL ≤0.8V. |
| 6 | A5 | input | Data input 5; accepts logic levels from 0V to VCC with VIH ≥2V and VIL ≤0.8V. |
| 7 | A6 | input | Data input 6; accepts logic levels from 0V to VCC with VIH ≥2V and VIL ≤0.8V. |
| 8 | A7 | input | Data input 7; accepts logic levels from 0V to VCC with VIH ≥2V and VIL ≤0.8V. |
| 9 | A8 | input | Data input 8; accepts logic levels from 0V to VCC with VIH ≥2V and VIL ≤0.8V. |
| 10 | GND | power_in | Ground, power supply return (0V reference). |
| 11 | Y8 | tri_state | Data output 8, 3-state output; high-impedance when OE1 or OE2 high; sources 32mA or sinks 64mA at VCC=5V. |
| 12 | Y7 | tri_state | Data output 7, 3-state output; high-impedance when OE1 or OE2 high; sources 32mA or sinks 64mA at VCC=5V. |
| 13 | Y6 | tri_state | Data output 6, 3-state output; high-impedance when OE1 or OE2 high; sources 32mA or sinks 64mA at VCC=5V. |
| 14 | Y5 | tri_state | Data output 5, 3-state output; high-impedance when OE1 or OE2 high; sources 32mA or sinks 64mA at VCC=5V. |
| 15 | Y4 | tri_state | Data output 4, 3-state output; high-impedance when OE1 or OE2 high; sources 32mA or sinks 64mA at VCC=5V. |
| 16 | Y3 | tri_state | Data output 3, 3-state output; high-impedance when OE1 or OE2 high; sources 32mA or sinks 64mA at VCC=5V. |
| 17 | Y2 | tri_state | Data output 2, 3-state output; high-impedance when OE1 or OE2 high; sources 32mA or sinks 64mA at VCC=5V. |
| 18 | Y1 | tri_state | Data output 1, 3-state output; high-impedance when OE1 or OE2 high; sources 32mA or sinks 64mA at VCC=5V. |
| 19 | OE2 | input | Output Enable 2 input, active-low; all outputs are high-impedance when high. |
| 20 | VCC | power_in | Positive power supply voltage; recommended operating range 4.5V to 5.5V for SN74ABT540. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-20-208mil |
| Category | Logic |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
SN74ABT540NSR - Footprint:
Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm - 3D model: SOIC-20-208mil (KiCad packages3D, STEP)
- 3D model files:
sn74abt540nsr-etched.step/sn74abt540nsr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74abt540nsr.step/sn74abt540nsr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (18 pp, sha256
13be7ff9fbec7951, retrieved 2026-10-07, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(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).