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SN74LV540ADWR
Public Made by Adomby adom
Texas Instruments Buffers, Drivers, Receivers, Transceivers, SOIC-20-300mil. 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
markdownSN74LV540ADWR
Texas Instruments · Buffers, Drivers, Receivers, Transceivers · SOIC-20-300mil
SN74LV540ADWR from Texas Instruments, in a SOIC-20-300mil. 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 | Active-low output enable 1; when it is high, all eight outputs are forced into the high-impedance state. |
| 2 | A1 | input | Buffer data input A1; inputs are tolerant to 5.5 V at any valid VCC. |
| 3 | A2 | input | Buffer data input A2; inputs are tolerant to 5.5 V at any valid VCC. |
| 4 | A3 | input | Buffer data input A3; inputs are tolerant to 5.5 V at any valid VCC. |
| 5 | A4 | input | Buffer data input A4; inputs are tolerant to 5.5 V at any valid VCC. |
| 6 | A5 | input | Buffer data input A5; inputs are tolerant to 5.5 V at any valid VCC. |
| 7 | A6 | input | Buffer data input A6; inputs are tolerant to 5.5 V at any valid VCC. |
| 8 | A7 | input | Buffer data input A7; inputs are tolerant to 5.5 V at any valid VCC. |
| 9 | A8 | input | Buffer data input A8; inputs are tolerant to 5.5 V at any valid VCC. |
| 10 | GND | power_in | Ground pin for the device. |
| 11 | Y8 | tri_state | Three-state buffer output Y8 that provides inverted data when enabled and is high-impedance when OE1 or OE2 is high. |
| 12 | Y7 | tri_state | Three-state buffer output Y7 that provides inverted data when enabled and is high-impedance when OE1 or OE2 is high. |
| 13 | Y6 | tri_state | Three-state buffer output Y6 that provides inverted data when enabled and is high-impedance when OE1 or OE2 is high. |
| 14 | Y5 | tri_state | Three-state buffer output Y5 that provides inverted data when enabled and is high-impedance when OE1 or OE2 is high. |
| 15 | Y4 | tri_state | Three-state buffer output Y4 that provides inverted data when enabled and is high-impedance when OE1 or OE2 is high. |
| 16 | Y3 | tri_state | Three-state buffer output Y3 that provides inverted data when enabled and is high-impedance when OE1 or OE2 is high. |
| 17 | Y2 | tri_state | Three-state buffer output Y2 that provides inverted data when enabled and is high-impedance when OE1 or OE2 is high. |
| 18 | Y1 | tri_state | Three-state buffer output Y1 that provides inverted data when enabled and is high-impedance when OE1 or OE2 is high. |
| 19 | OE2 | input | Active-low output enable 2; when it is high, all eight outputs are forced into the high-impedance state. |
| 20 | VCC | power_in | Supply pin; the device operates from 2 V to 5.5 V and each VCC pin should have a bypass capacitor placed close to it. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-20-300mil |
| Category | Logic |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
SN74LV540ADWR - Footprint:
Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm - 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
- 3D model files:
sn74lv540adwr-etched.step/sn74lv540adwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74lv540adwr.step/sn74lv540adwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (29 pp, sha256
93d06dbc8af80287, retrieved 2026-10-09, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).