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SN74AHCT245DBR

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Texas Instruments Buffers, Drivers, Receivers, Transceivers, SSOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SN74AHCT245DBR

Texas Instruments · Buffers, Drivers, Receivers, Transceivers · SSOP-20-208mil

SN74AHCT245DBR from Texas Instruments, in a SSOP-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 DIR input Direction control input for the octal bus transceiver; the datasheet excerpt gives no logic-level or polarity detail for this pin.
2 A1 bidirectional A1 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
3 A2 bidirectional A2 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
4 A3 bidirectional A3 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
5 A4 bidirectional A4 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
6 A5 bidirectional A5 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
7 A6 bidirectional A6 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
8 A7 bidirectional A7 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
9 A8 bidirectional A8 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
10 GND power_in Ground pin; continuous current through VCC or GND is limited to ±75 mA in absolute maximum ratings.
11 B8 bidirectional B8 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
12 B7 bidirectional B7 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
13 B6 bidirectional B6 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
14 B5 bidirectional B5 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
15 B4 bidirectional B4 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
16 B3 bidirectional B3 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
17 B2 bidirectional B2 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
18 B1 bidirectional B1 input/output of the octal bus transceiver; absolute maximum continuous output current is ±25 mA for VO = 0 to VCC.
19 OE input Output enable input for the transceiver; the datasheet excerpt gives no polarity or timing detail for this pin.
20 VCC power_in Positive supply pin; recommended supply range is 4.5 V to 5.5 V, with absolute maximum supply voltage of -0.5 V to 7 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SSOP-20-208mil
Category Logic
Pins 20

CAD (KiCad official)

  • Symbol: SN74AHCT245DBR
  • Footprint: Package_SO:SSOP-20_5.3x7.2mm_P0.65mm
  • 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
  • 3D model files: sn74ahct245dbr-etched.step / sn74ahct245dbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74ahct245dbr.step / sn74ahct245dbr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (41 pp, sha256 0929f5fab514d31a, retrieved 2026-10-11, 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF