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SN74CBT3383DBQR
Public Made by Adomby adom
Texas Instruments Analog Switches / Multiplexers, SSOP-24-150mil. 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
markdownSN74CBT3383DBQR
Texas Instruments · Analog Switches / Multiplexers · SSOP-24-150mil
SN74CBT3383DBQR from Texas Instruments, in a SSOP-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 | BE | input | Active-low input enable pin; when low, enables the bus switches; when high, places all switches in high-impedance state |
| 2 | 1B1 | bidirectional | Transceiver I/O pin for first bit pair B side |
| 3 | 1A1 | bidirectional | Transceiver I/O pin for first bit pair A side |
| 4 | 1A2 | bidirectional | Transceiver I/O pin for first bit pair A side |
| 5 | 1B2 | bidirectional | Transceiver I/O pin for first bit pair B side |
| 6 | 2B1 | bidirectional | Transceiver I/O pin for second bit pair B side |
| 7 | 2A1 | bidirectional | Transceiver I/O pin for second bit pair A side |
| 8 | 2A2 | bidirectional | Transceiver I/O pin for second bit pair A side |
| 9 | 2B2 | bidirectional | Transceiver I/O pin for second bit pair B side |
| 10 | 3B1 | bidirectional | Transceiver I/O pin for third bit pair B side |
| 11 | 3A1 | bidirectional | Transceiver I/O pin for third bit pair A side |
| 12 | GND | power_in | Ground connection, 0V reference |
| 13 | BX | input | Output select pin; when low provides direct A-to-B connection; when high provides crossed A-to-B2 and A2-to-B1 bus exchange |
| 14 | 3A2 | bidirectional | Transceiver I/O pin for third bit pair A side |
| 15 | 3B2 | bidirectional | Transceiver I/O pin for third bit pair B side |
| 16 | 4B1 | bidirectional | Transceiver I/O pin for fourth bit pair B side |
| 17 | 4A1 | bidirectional | Transceiver I/O pin for fourth bit pair A side |
| 18 | 4A2 | bidirectional | Transceiver I/O pin for fourth bit pair A side |
| 19 | 4B2 | bidirectional | Transceiver I/O pin for fourth bit pair B side |
| 20 | 5B1 | bidirectional | Transceiver I/O pin for fifth bit pair B side |
| 21 | 5A1 | bidirectional | Transceiver I/O pin for fifth bit pair A side |
| 22 | 5A2 | bidirectional | Transceiver I/O pin for fifth bit pair A side |
| 23 | 5B2 | bidirectional | Transceiver I/O pin for fifth bit pair B side |
| 24 | VCC | power_in | Power supply pin; +5V nominal operation with 4.5V to 5.5V recommended operating range |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-24-150mil |
| Category | Communication Interface Chip/UART/485/232 |
| Pins | 24 |
CAD (KiCad official)
- Symbol:
SN74CBT3383DBQR - Footprint:
Package_SO:SSOP-24_5.3x8.2mm_P0.65mm - 3D model: SSOP-24-150mil (KiCad packages3D, STEP)
- 3D model files:
sn74cbt3383dbqr-etched.step/sn74cbt3383dbqr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74cbt3383dbqr.step/sn74cbt3383dbqr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (24 pp, sha256
7b570c6029a0dda5, retrieved 2026-10-07, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(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).