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SN74CBT3244DWR

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Texas Instruments Analog Switches, Multiplexers, SOIC-20-300mil. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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SN74CBT3244DWR

Texas Instruments · Analog Switches, Multiplexers · SOIC-20-300mil

SN74CBT3244DWR from Texas Instruments, in a SOIC-20-300mil. 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 1OE input Output enable input (active low) for first 4-bit switch group; A and B sides connected when low, disconnected when high.
2 1A1 bidirectional Transceiver I/O pin (first 4-bit switch group, A side).
3 2B4 bidirectional Transceiver I/O pin (second 4-bit switch group, B side).
4 1A2 bidirectional Transceiver I/O pin (first 4-bit switch group, A side).
5 2B3 bidirectional Transceiver I/O pin (second 4-bit switch group, B side).
6 1A3 bidirectional Transceiver I/O pin (first 4-bit switch group, A side).
7 2B2 bidirectional Transceiver I/O pin (second 4-bit switch group, B side).
8 1A4 bidirectional Transceiver I/O pin (first 4-bit switch group, A side).
9 2B1 bidirectional Transceiver I/O pin (second 4-bit switch group, B side).
10 GND power_in Ground (0 V reference).
11 2A1 bidirectional Transceiver I/O pin (second 4-bit switch group, A side).
12 1B4 bidirectional Transceiver I/O pin (first 4-bit switch group, B side).
13 2A2 bidirectional Transceiver I/O pin (second 4-bit switch group, A side).
14 1B3 bidirectional Transceiver I/O pin (first 4-bit switch group, B side).
15 2A3 bidirectional Transceiver I/O pin (second 4-bit switch group, A side).
16 1B2 bidirectional Transceiver I/O pin (first 4-bit switch group, B side).
17 2A4 bidirectional Transceiver I/O pin (second 4-bit switch group, A side).
18 1B1 bidirectional Transceiver I/O pin (first 4-bit switch group, B side).
19 2OE input Output enable input (active low) for second 4-bit switch group; A and B sides connected when low, disconnected when high.
20 VCC power_in Power supply pin; recommended operating range 4.5 V to 5.5 V per recommended operating conditions.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-20-300mil
Category Interface
Pins 20

CAD (KiCad official)

  • Symbol: SN74CBT3244DWR
  • Footprint: Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm
  • 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
  • 3D model files: sn74cbt3244dwr-etched.step / sn74cbt3244dwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74cbt3244dwr.step / sn74cbt3244dwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (29 pp, sha256 9e6ed4a584667916, retrieved 2026-09-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-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