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SN74ACT240PWR
Public Made by Adomby adom
Texas Instruments Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Datasheet-verified pinout, 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
markdownSN74ACT240PWR
Texas Instruments · Buffers, Drivers, Receivers, Transceivers · TSSOP-20
SN74ACT240PWR from Texas Instruments, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1OE | input | Output enable for buffer group 1, active low; outputs 1Y1-1Y4 are in high-impedance state when this pin is high |
| 2 | 1A1 | input | Data input 1 for buffer group 1; inverted to output 1Y1 when 1OE is low |
| 3 | 2Y4 | tri_state | Inverted tri-state output 4 for buffer group 2; maximum continuous output current ±50 mA |
| 4 | 1A2 | input | Data input 2 for buffer group 1; inverted to output 1Y2 when 1OE is low |
| 5 | 2Y3 | tri_state | Inverted tri-state output 3 for buffer group 2; maximum continuous output current ±50 mA |
| 6 | 1A3 | input | Data input 3 for buffer group 1; inverted to output 1Y3 when 1OE is low |
| 7 | 2Y2 | tri_state | Inverted tri-state output 2 for buffer group 2; maximum continuous output current ±50 mA |
| 8 | 1A4 | input | Data input 4 for buffer group 1; inverted to output 1Y4 when 1OE is low |
| 9 | 2Y1 | tri_state | Inverted tri-state output 1 for buffer group 2; maximum continuous output current ±50 mA |
| 10 | GND | power_in | Ground reference pin |
| 11 | 2A1 | input | Data input 1 for buffer group 2; inverted to output 2Y1 when 2OE is low |
| 12 | 1Y4 | tri_state | Inverted tri-state output 4 for buffer group 1; maximum continuous output current ±50 mA |
| 13 | 2A2 | input | Data input 2 for buffer group 2; inverted to output 2Y2 when 2OE is low |
| 14 | 1Y3 | tri_state | Inverted tri-state output 3 for buffer group 1; maximum continuous output current ±50 mA |
| 15 | 2A3 | input | Data input 3 for buffer group 2; inverted to output 2Y3 when 2OE is low |
| 16 | 1Y2 | tri_state | Inverted tri-state output 2 for buffer group 1; maximum continuous output current ±50 mA |
| 17 | 2A4 | input | Data input 4 for buffer group 2; inverted to output 2Y4 when 2OE is low |
| 18 | 1Y1 | tri_state | Inverted tri-state output 1 for buffer group 1; maximum continuous output current ±50 mA |
| 19 | 2OE | input | Output enable for buffer group 2, active low; outputs 2Y1-2Y4 are in high-impedance state when this pin is high |
| 20 | VCC | power_in | Power supply pin; recommended operating voltage 4.5V to 5.5V |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-20 |
| Category | Logic |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
SN74ACT240PWR - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
sn74act240pwr-etched.step/sn74act240pwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74act240pwr.step/sn74act240pwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (37 pp, sha256
d07b999da168505c, retrieved 2026-09-23, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).