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SN74AVCH4T245PWR

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by Ray

Texas Instruments Buffer/Driver/Transceiver, TSSOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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PCB Footprint

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Datasheet

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Contents

README

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SN74AVCH4T245PWR

Texas Instruments · Buffer/Driver/Transceiver · TSSOP-16

SN74AVCH4T245PWR from Texas Instruments, in a TSSOP-16. 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 VCCA power_in A-port power supply voltage. Sets the reference level for A-side I/Os and control inputs (1DIR, 2DIR, 1OE, 2OE). Operating range 1.2 V ≤ VCCA ≤ 3.6 V.
2 1DIR input Direction-control input for port 1. Selects data flow direction between 1A[1:2] and 1B[1:2]. Referenced to VCCA.
3 2DIR input Direction-control input for port 2. Selects data flow direction between 2A[1:2] and 2B[1:2]. Referenced to VCCA.
4 1A1 bidirectional Port-1 A-side bit 1 input/output. Referenced to VCCA (1.2 V-3.6 V). Bus-hold circuitry maintains last valid logic level when undriven.
5 1A2 bidirectional Port-1 A-side bit 2 input/output. Referenced to VCCA (1.2 V-3.6 V). Bus-hold circuitry maintains last valid logic level when undriven.
6 2A1 bidirectional Port-2 A-side bit 1 input/output. Referenced to VCCA (1.2 V-3.6 V). Bus-hold circuitry maintains last valid logic level when undriven.
7 2A2 bidirectional Port-2 A-side bit 2 input/output. Referenced to VCCA (1.2 V-3.6 V). Bus-hold circuitry maintains last valid logic level when undriven.
8 GND power_in Device ground reference.
9 GND power_in Device ground reference.
10 2B2 bidirectional Port-2 B-side bit 2 input/output. Referenced to VCCB (1.2 V-3.6 V). Bus-hold circuitry maintains last valid logic level when undriven.
11 2B1 bidirectional Port-2 B-side bit 1 input/output. Referenced to VCCB (1.2 V-3.6 V). Bus-hold circuitry maintains last valid logic level when undriven.
12 1B2 bidirectional Port-1 B-side bit 2 input/output. Referenced to VCCB (1.2 V-3.6 V). Bus-hold circuitry maintains last valid logic level when undriven.
13 1B1 bidirectional Port-1 B-side bit 1 input/output. Referenced to VCCB (1.2 V-3.6 V). Bus-hold circuitry maintains last valid logic level when undriven.
14 2OE input Active-low 3-state output-mode enable for port 2. Drive high to place '2' outputs in high-impedance (3-state) mode. Referenced to VCCA.
15 1OE input Active-low 3-state output-mode enable for port 1. Drive high to place '1' outputs in high-impedance (3-state) mode. Referenced to VCCA.
16 VCCB power_in B-port power supply voltage. Sets the reference level for B-side I/Os. Operating range 1.2 V ≤ VCCB ≤ 3.6 V. Independent of VCCA to enable level translation.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-16
Category Logic
Pins 16

Ordering variants

Same part, different packaging or reel option.

  • SN74AVCH4T245PWR
  • SN74AVCH4T245PWRD
  • SN74AVCH4T245PWRDGV
  • SN74AVCH4T245PWRRSV
  • SN74AVCH4T245PWRRGY

CAD (KiCad official)

  • Symbol: SN74AVCH4T245PWR
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
sn74avch4t245pwr.step 205 KB You want the bare part, or you mark your own boards.
sn74avch4t245pwr-etched.step 2.9 MB You want the part with SN74AVCH4T245PWR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 753 faces against 255 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: Texas Instruments datasheet (39 pp, sha256 9ed8cd416882d190, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF