component
SN74CBT3306DR
Public Made by Adomby adom
Texas Instruments Signal Switches, Multiplexers, Decoders, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSN74CBT3306DR
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74cbt3306dr.step/sn74cbt3306dr.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).