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SN74CBT3384CDBQR

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Texas Instruments Analog Switches, Multiplexers, QSOP-24-150mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SN74CBT3384CDBQR

Texas Instruments · Analog Switches, Multiplexers · QSOP-24-150mil

SN74CBT3384CDBQR from Texas Instruments, in a QSOP-24-150mil. 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 the first 5-bit bus switch, active low (switch ON when low, high-impedance when high); control input VIH 2 V min, tie to VCC via pullup for power up/down.
2 1B1 bidirectional Bus 1 B-port bit 1 switch I/O, connected to 1A1 when 1OE is low, supports 0 to 5.5 V data levels.
3 1A1 bidirectional Bus 1 A-port bit 1 switch I/O, connected to 1B1 when 1OE is low, with undershoot protection down to -2 V.
4 1A2 bidirectional Bus 1 A-port bit 2 switch I/O, connected to 1B2 when 1OE is low, with undershoot protection down to -2 V.
5 1B2 bidirectional Bus 1 B-port bit 2 switch I/O, connected to 1A2 when 1OE is low, supports 0 to 5.5 V data levels.
6 1B3 bidirectional Bus 1 B-port bit 3 switch I/O, connected to 1A3 when 1OE is low, supports 0 to 5.5 V data levels.
7 1A3 bidirectional Bus 1 A-port bit 3 switch I/O, connected to 1B3 when 1OE is low, with undershoot protection down to -2 V.
8 1A4 bidirectional Bus 1 A-port bit 4 switch I/O, connected to 1B4 when 1OE is low, with undershoot protection down to -2 V.
9 1B4 bidirectional Bus 1 B-port bit 4 switch I/O, connected to 1A4 when 1OE is low, supports 0 to 5.5 V data levels.
10 1B5 bidirectional Bus 1 B-port bit 5 switch I/O, connected to 1A5 when 1OE is low, supports 0 to 5.5 V data levels.
11 1A5 bidirectional Bus 1 A-port bit 5 switch I/O, connected to 1B5 when 1OE is low, with undershoot protection down to -2 V.
12 GND power_in Ground; unused control inputs must be held at VCC or GND.
13 2OE input Output enable for the second 5-bit bus switch, active low (switch ON when low, high-impedance when high); control input VIH 2 V min, tie to VCC via pullup for power up/down.
14 2A1 bidirectional Bus 2 A-port bit 1 switch I/O, connected to 2B1 when 2OE is low, with undershoot protection down to -2 V.
15 2B1 bidirectional Bus 2 B-port bit 1 switch I/O, connected to 2A1 when 2OE is low, supports 0 to 5.5 V data levels.
16 2B2 bidirectional Bus 2 B-port bit 2 switch I/O, connected to 2A2 when 2OE is low, supports 0 to 5.5 V data levels.
17 2A2 bidirectional Bus 2 A-port bit 2 switch I/O, connected to 2B2 when 2OE is low, with undershoot protection down to -2 V.
18 2A3 bidirectional Bus 2 A-port bit 3 switch I/O, connected to 2B3 when 2OE is low, with undershoot protection down to -2 V.
19 2B3 bidirectional Bus 2 B-port bit 3 switch I/O, connected to 2A3 when 2OE is low, supports 0 to 5.5 V data levels.
20 2B4 bidirectional Bus 2 B-port bit 4 switch I/O, connected to 2A4 when 2OE is low, supports 0 to 5.5 V data levels.
21 2A4 bidirectional Bus 2 A-port bit 4 switch I/O, connected to 2B4 when 2OE is low, with undershoot protection down to -2 V.
22 2A5 bidirectional Bus 2 A-port bit 5 switch I/O, connected to 2B5 when 2OE is low, with undershoot protection down to -2 V.
23 2B5 bidirectional Bus 2 B-port bit 5 switch I/O, connected to 2A5 when 2OE is low, supports 0 to 5.5 V data levels.
24 VCC power_in Supply voltage, 4 V to 5.5 V recommended operating range (absolute maximum -0.5 V to 7 V).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package QSOP-24-150mil
Category Interface
Pins 24

CAD (KiCad official)

  • Symbol: SN74CBT3384CDBQR
  • Footprint: Package_SO:QSOP-24_3.9x8.7mm_P0.635mm
  • 3D model: QSOP-24-150mil (KiCad packages3D, STEP)
  • 3D model files: sn74cbt3384cdbqr-etched.step / sn74cbt3384cdbqr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74cbt3384cdbqr.step / sn74cbt3384cdbqr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (21 pp, sha256 66957e3345e79c14, retrieved 2026-09-30, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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