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SN74LVT245BDBR

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

SN74LVT245BDBR 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: a low level transfers B data to the A bus and a high level transfers A data to the B bus, per the function table.
2	A1	bidirectional	A-bus 3-state input/output terminal 1, which drives or receives data on the A bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
3	A2	bidirectional	A-bus 3-state input/output terminal 2, which drives or receives data on the A bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
4	A3	bidirectional	A-bus 3-state input/output terminal 3, which drives or receives data on the A bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
5	A4	bidirectional	A-bus 3-state input/output terminal 4, which drives or receives data on the A bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
6	A5	bidirectional	A-bus 3-state input/output terminal 5, which drives or receives data on the A bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
7	A6	bidirectional	A-bus 3-state input/output terminal 6, which drives or receives data on the A bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
8	A7	bidirectional	A-bus 3-state input/output terminal 7, which drives or receives data on the A bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
9	A8	bidirectional	A-bus 3-state input/output terminal 8, which drives or receives data on the A bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
10	GND	power_in	Device ground; per Note 5, all unused inputs must be held at VCC or GND to ensure proper operation.
11	B8	bidirectional	B-bus 3-state input/output terminal 8, which drives or receives data on the B bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
12	B7	bidirectional	B-bus 3-state input/output terminal 7, which drives or receives data on the B bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
13	B6	bidirectional	B-bus 3-state input/output terminal 6, which drives or receives data on the B bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
14	B5	bidirectional	B-bus 3-state input/output terminal 5, which drives or receives data on the B bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
15	B4	bidirectional	B-bus 3-state input/output terminal 4, which drives or receives data on the B bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
16	B3	bidirectional	B-bus 3-state input/output terminal 3, which drives or receives data on the B bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
17	B2	bidirectional	B-bus 3-state input/output terminal 2, which drives or receives data on the B bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
18	B1	bidirectional	B-bus 3-state input/output terminal 1, which drives or receives data on the B bus when OE is low; it is part of the 3.3-V ABT interface with 5-V tolerant inputs (VI up to 5.5 V).
19	OE	input	Active-low output enable: a high level isolates the A and B buses, and per the datasheet it should be tied to VCC through a pullup resistor to keep outputs high-impedance during power up and power down.
20	VCC	power_in	Supply voltage, recommended range 2.7 V to 3.6 V (3.3-V nominal operation).

Key specifications

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

CAD (KiCad official)

Symbol: SN74LVT245BDBR
Footprint: Package_SO:SSOP-20_5.3x7.2mm_P0.65mm
3D model: SSOP-20-208mil (KiCad packages3D, STEP)
3D model files: sn74lvt245bdbr-etched.step / sn74lvt245bdbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74lvt245bdbr.step / sn74lvt245bdbr.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (22 pp, sha256 edba6f3dad321ba6, retrieved 2026-10-11, tier: lcsc)
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