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SN74ABT2245PWR
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Texas Instruments Buffers, Drivers, Receivers, Transceivers, TSSOP-20. 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
markdownSN74ABT2245PWR
Texas Instruments · Buffers, Drivers, Receivers, Transceivers · TSSOP-20
SN74ABT2245PWR from Texas Instruments, in a TSSOP-20. 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 | DIR | input | Direction-control input: a low level selects B data to the A bus and a high level selects A data to the B bus (function table, page 1). |
| 2 | A1 | bidirectional | A-bus data pin of the octal transceiver, which passes data to or from B1 depending on DIR and OE; recommended IOH is -32 mA and IOL is 64 mA for the SN74ABT2245 A port. |
| 3 | A2 | bidirectional | A-bus data pin of the octal transceiver, which passes data to or from B2 depending on DIR and OE; recommended IOH is -32 mA and IOL is 64 mA for the SN74ABT2245 A port. |
| 4 | A3 | bidirectional | A-bus data pin of the octal transceiver, which passes data to or from B3 depending on DIR and OE; recommended IOH is -32 mA and IOL is 64 mA for the SN74ABT2245 A port. |
| 5 | A4 | bidirectional | A-bus data pin of the octal transceiver, which passes data to or from B4 depending on DIR and OE; recommended IOH is -32 mA and IOL is 64 mA for the SN74ABT2245 A port. |
| 6 | A5 | bidirectional | A-bus data pin of the octal transceiver, which passes data to or from B5 depending on DIR and OE; recommended IOH is -32 mA and IOL is 64 mA for the SN74ABT2245 A port. |
| 7 | A6 | bidirectional | A-bus data pin of the octal transceiver, which passes data to or from B6 depending on DIR and OE; recommended IOH is -32 mA and IOL is 64 mA for the SN74ABT2245 A port. |
| 8 | A7 | bidirectional | A-bus data pin of the octal transceiver, which passes data to or from B7 depending on DIR and OE; recommended IOH is -32 mA and IOL is 64 mA for the SN74ABT2245 A port. |
| 9 | A8 | bidirectional | A-bus data pin of the octal transceiver, which passes data to or from B8 depending on DIR and OE; recommended IOH is -32 mA and IOL is 64 mA for the SN74ABT2245 A port. |
| 10 | GND | power_in | Device ground reference pin. |
| 11 | B8 | bidirectional | B-bus data pin with an equivalent 25-Ω series resistor, designed to sink up to 12 mA; recommended IOH is -12 mA and IOL is 12 mA. |
| 12 | B7 | bidirectional | B-bus data pin with an equivalent 25-Ω series resistor, designed to sink up to 12 mA; recommended IOH is -12 mA and IOL is 12 mA. |
| 13 | B6 | bidirectional | B-bus data pin with an equivalent 25-Ω series resistor, designed to sink up to 12 mA; recommended IOH is -12 mA and IOL is 12 mA. |
| 14 | B5 | bidirectional | B-bus data pin with an equivalent 25-Ω series resistor, designed to sink up to 12 mA; recommended IOH is -12 mA and IOL is 12 mA. |
| 15 | B4 | bidirectional | B-bus data pin with an equivalent 25-Ω series resistor, designed to sink up to 12 mA; recommended IOH is -12 mA and IOL is 12 mA. |
| 16 | B3 | bidirectional | B-bus data pin with an equivalent 25-Ω series resistor, designed to sink up to 12 mA; recommended IOH is -12 mA and IOL is 12 mA. |
| 17 | B2 | bidirectional | B-bus data pin with an equivalent 25-Ω series resistor, designed to sink up to 12 mA; recommended IOH is -12 mA and IOL is 12 mA. |
| 18 | B1 | bidirectional | B-bus data pin with an equivalent 25-Ω series resistor, designed to sink up to 12 mA; recommended IOH is -12 mA and IOL is 12 mA. |
| 19 | OE | input | Output-enable input: a low level enables the transceiver and a high level isolates the buses; to keep outputs high-impedance above 2.1 V, tie OE to VCC through a pullup resistor. |
| 20 | VCC | power_in | Supply voltage pin, specified at 4.5 V minimum to 5.5 V maximum for the SN74ABT2245. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-20 |
| Category | Logic |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
SN74ABT2245PWR - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
sn74abt2245pwr-etched.step/sn74abt2245pwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74abt2245pwr.step/sn74abt2245pwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (27 pp, sha256
fa8f4ca4d406b603, retrieved 2026-10-12, tier: manufacturer) - 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).