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74LCX245MTC

Public Made by Adom

by adom

onsemi Buffers / Drivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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74LCX245MTC

onsemi · Buffers / Drivers · TSSOP-20

74LCX245MTC from onsemi, 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 T/R input Transmit/Receive input that sets data direction: LOW sends B0-B7 data to A0-A7, HIGH sends A0-A7 data to B0-B7 (input voltage 0 to 5.5V).
2 A0 bidirectional Side A input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
3 A1 bidirectional Side A input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
4 A2 bidirectional Side A input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
5 A3 bidirectional Side A input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
6 A4 bidirectional Side A input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
7 A5 bidirectional Side A input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
8 A6 bidirectional Side A input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
9 A7 bidirectional Side A input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
10 GND power_in Ground pin (0V reference); DC ground current per ground pin is limited to ±100mA.
11 B7 bidirectional Side B input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
12 B6 bidirectional Side B input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
13 B5 bidirectional Side B input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
14 B4 bidirectional Side B input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
15 B3 bidirectional Side B input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
16 B2 bidirectional Side B input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
17 B1 bidirectional Side B input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
18 B0 bidirectional Side B input or 3-STATE output, 5V tolerant (0 to 5.5V in 3-STATE), with ±24mA drive at VCC = 3.0V-3.6V.
19 OE input Active-low Output Enable input; HIGH places both the A and B ports in high impedance, and it should be tied to VCC through a pull-up resistor to ensure high impedance during power up or down.
20 VCC power_in Positive supply, recommended operating range 2.0V to 3.6V (2.3V to 3.6V specified), absolute maximum -0.5V to +7.0V.

Key specifications

Parameter Value
Manufacturer onsemi
Package TSSOP-20
Category Logic ICs
Pins 20

CAD (KiCad official)

  • Symbol: 74LCX245MTC
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: 74lcx245mtc-etched.step / 74lcx245mtc-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 74lcx245mtc.step / 74lcx245mtc.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (16 pp, sha256 c74ef240db1532a3, retrieved 2026-10-27, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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