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TCA9548APWR

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by Ray

Texas Instruments Signal Switches, Multiplexers, Decoders, TSSOP-24. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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TCA9548APWR

Texas Instruments · Signal Switches, Multiplexers, Decoders · TSSOP-24

TCA9548APWR from Texas Instruments, in a TSSOP-24. 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 A0 input Address input 0. Hard-wire to VCC or GND to select one of eight I2C slave addresses. VIH = 0.7 x VCC to VCC + 0.5 V.
2 A1 input Address input 1. Hard-wire to VCC or GND to select one of eight I2C slave addresses.
3 RESET input Active-low reset input. Asserting low resets the I2C/SMBus state machine and deselects all channels. Connect to VCC or VDPUM through a pull-up resistor if not used. Minimum pulse width 6 ns.
4 SD0 bidirectional Downstream channel 0 serial data. Connect to VDPU0 through a pull-up resistor. 5-V tolerant.
5 SC0 bidirectional Downstream channel 0 serial clock. Connect to VDPU0 through a pull-up resistor. 5-V tolerant.
6 SD1 bidirectional Downstream channel 1 serial data. Connect to VDPU1 through a pull-up resistor.
7 SC1 bidirectional Downstream channel 1 serial clock. Connect to VDPU1 through a pull-up resistor.
8 SD2 bidirectional Downstream channel 2 serial data. Connect to VDPU2 through a pull-up resistor.
9 SC2 bidirectional Downstream channel 2 serial clock. Connect to VDPU2 through a pull-up resistor.
10 SD3 bidirectional Downstream channel 3 serial data. Connect to VDPU3 through a pull-up resistor.
11 SC3 bidirectional Downstream channel 3 serial clock. Connect to VDPU3 through a pull-up resistor.
12 GND power_in Ground reference for the device.
13 SD4 bidirectional Downstream channel 4 serial data. Connect to VDPU4 through a pull-up resistor.
14 SC4 bidirectional Downstream channel 4 serial clock. Connect to VDPU4 through a pull-up resistor.
15 SD5 bidirectional Downstream channel 5 serial data. Connect to VDPU5 through a pull-up resistor.
16 SC5 bidirectional Downstream channel 5 serial clock. Connect to VDPU5 through a pull-up resistor.
17 SD6 bidirectional Downstream channel 6 serial data. Connect to VDPU6 through a pull-up resistor.
18 SC6 bidirectional Downstream channel 6 serial clock. Connect to VDPU6 through a pull-up resistor.
19 SD7 bidirectional Downstream channel 7 serial data. Connect to VDPU7 through a pull-up resistor.
20 SC7 bidirectional Downstream channel 7 serial clock. Connect to VDPU7 through a pull-up resistor.
21 A2 input Address input 2. Hard-wire to VCC or GND to select one of eight I2C slave addresses.
22 SCL bidirectional Upstream I2C serial clock bus. Connect to VDPUM (controller I2C reference voltage) through a pull-up resistor. 5-V tolerant, 0 to 400 kHz.
23 SDA bidirectional Upstream I2C serial data bus. Connect to VDPUM through a pull-up resistor. Open-drain, 5-V tolerant.
24 VCC power_in Supply voltage. Recommended operating range 1.65 V to 5.5 V (1.65 V to 3.6 V above 85 degC). Absolute max 7 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-24
Category Logic
Pins 24

Ordering variants

Same part, different packaging or reel option.

  • TCA9548APWR
  • TCA9548APWRDGS
  • TCA9548APWRDGSR
  • TCA9548APWRRGE
  • TCA9548APWRRGER

CAD (KiCad official)

  • Symbol: TCA9548APWR
  • Footprint: Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm
  • 3D model: TSSOP-24 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Texas Instruments datasheet (42 pp, sha256 2137822fd7128945, 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