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SN74CBT3306DR

Public Made by Adom

by adom

Texas Instruments Signal Switches, Multiplexers, Decoders, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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sn74cbt3306dr-hero.glb sn74cbt3306dr: hero GLB from the etched model (keeps the MPN mark) · Ray 14d ago
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SN74CBT3306DR

Texas Instruments · Signal Switches, Multiplexers, Decoders · SOIC-8

SN74CBT3306DR from Texas Instruments, in a SOIC-8. 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 1OE input Output-enable for bus switch 1; when high the 1A-1B switch is disabled, and when low the A port is connected to the B port (TTL-compatible input). Unused control inputs must be held at VCC or GND.
2 1A passive A port of bus switch 1, a 5-Ω FET pass switch to 1B when 1OE is low; continuous channel current is limited to 128 mA.
3 1B passive B port of bus switch 1, a 5-Ω FET pass switch to 1A when 1OE is low; continuous channel current is limited to 128 mA.
4 GND power_in Ground reference; unused control inputs must be held at VCC or GND for proper operation.
5 2A passive A port of bus switch 2, a 5-Ω FET pass switch to 2B when 2OE is low; continuous channel current is limited to 128 mA.
6 2B passive B port of bus switch 2, a 5-Ω FET pass switch to 2A when 2OE is low; continuous channel current is limited to 128 mA.
7 2OE input Output-enable for bus switch 2; when high the 2A-2B switch is disabled, and when low the A port is connected to the B port (TTL-compatible input). Unused control inputs must be held at VCC or GND.
8 VCC power_in Supply voltage, recommended 4 V to 5.5 V; absolute maximum is -0.5 V to 7 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category Logic
Pins 8

CAD (KiCad official)

  • Symbol: SN74CBT3306DR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: sn74cbt3306dr-etched.step / sn74cbt3306dr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74cbt3306dr.step / sn74cbt3306dr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (11 pp, sha256 305f77732da91374, retrieved 2026-10-08, tier: manufacturer)
  • 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