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SN74CBT3383CDBQR
Public Made by Adomby adom
Texas Instruments Signal Switches, Multiplexers, Decoders, 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
markdownSN74CBT3383CDBQR
Texas Instruments · Signal Switches, Multiplexers, Decoders · SSOP-24-150mil
SN74CBT3383CDBQR 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 bus enable input; when high, the A and B ports are in a high-impedance (disconnected) state, and the datasheet recommends a pull-up from BE to VCC to hold that state during power-up or power-down. |
| 2 | 1B1 | bidirectional | I/O pin, can be input or output, for the B-side port of bus-switch 1; data I/O is specified for 0 to 5.5 V. |
| 3 | 1A1 | bidirectional | I/O pin, can be input or output, for the A-side port of bus-switch 1; data I/O is specified for 0 to 5.5 V. |
| 4 | 1A2 | bidirectional | I/O pin, can be input or output, for the A-side port of bus-switch 1; data I/O is specified for 0 to 5.5 V. |
| 5 | 1B2 | bidirectional | I/O pin, can be input or output, for the B-side port of bus-switch 1; data I/O is specified for 0 to 5.5 V. |
| 6 | 2B1 | bidirectional | I/O pin, can be input or output, for the B-side port of bus-switch 2; data I/O is specified for 0 to 5.5 V. |
| 7 | 2A1 | bidirectional | I/O pin, can be input or output, for the A-side port of bus-switch 2; data I/O is specified for 0 to 5.5 V. |
| 8 | 2A2 | bidirectional | I/O pin, can be input or output, for the A-side port of bus-switch 2; data I/O is specified for 0 to 5.5 V. |
| 9 | 2B2 | bidirectional | I/O pin, can be input or output, for the B-side port of bus-switch 2; data I/O is specified for 0 to 5.5 V. |
| 10 | 3B1 | bidirectional | I/O pin, can be input or output, for the B-side port of bus-switch 3; data I/O is specified for 0 to 5.5 V. |
| 11 | 3A1 | bidirectional | I/O pin, can be input or output, for the A-side port of bus-switch 3; data I/O is specified for 0 to 5.5 V. |
| 12 | GND | power_in | Ground pin; all voltages are referenced to this network ground terminal. |
| 13 | BX | input | Select input that sets the data path of the bus exchange: when low, xA1 is tied to xB1 and xA2 to xB2; when high, xA1 is tied to xB2 and xA2 to xB1. |
| 14 | 3A2 | bidirectional | I/O pin, can be input or output, for the A-side port of bus-switch 3; data I/O is specified for 0 to 5.5 V. |
| 15 | 3B2 | bidirectional | I/O pin, can be input or output, for the B-side port of bus-switch 3; data I/O is specified for 0 to 5.5 V. |
| 16 | 4B1 | bidirectional | I/O pin, can be input or output, for the B-side port of bus-switch 4; data I/O is specified for 0 to 5.5 V. |
| 17 | 4A1 | bidirectional | I/O pin, can be input or output, for the A-side port of bus-switch 4; data I/O is specified for 0 to 5.5 V. |
| 18 | 4A2 | bidirectional | I/O pin, can be input or output, for the A-side port of bus-switch 4; data I/O is specified for 0 to 5.5 V. |
| 19 | 4B2 | bidirectional | I/O pin, can be input or output, for the B-side port of bus-switch 4; data I/O is specified for 0 to 5.5 V. |
| 20 | 5B1 | bidirectional | I/O pin, can be input or output, for the B-side port of bus-switch 5; data I/O is specified for 0 to 5.5 V. |
| 21 | 5A1 | bidirectional | I/O pin, can be input or output, for the A-side port of bus-switch 5; data I/O is specified for 0 to 5.5 V. |
| 22 | 5A2 | bidirectional | I/O pin, can be input or output, for the A-side port of bus-switch 5; data I/O is specified for 0 to 5.5 V. |
| 23 | 5B2 | bidirectional | I/O pin, can be input or output, for the B-side port of bus-switch 5; data I/O is specified for 0 to 5.5 V. |
| 24 | VCC | power_in | Power supply pin; the recommended supply range is 4 V to 5.5 V and each VCC pin should have a bypass capacitor (0.1 µF for a single-supply device). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-24-150mil |
| Category | Logic |
| Pins | 24 |
CAD (KiCad official)
- Symbol:
SN74CBT3383CDBQR - Footprint:
Package_SO:SSOP-24_5.3x8.2mm_P0.65mm - 3D model: SSOP-24-150mil (KiCad packages3D, STEP)
- 3D model files:
sn74cbt3383cdbqr-etched.step/sn74cbt3383cdbqr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74cbt3383cdbqr.step/sn74cbt3383cdbqr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (25 pp, sha256
8635eb8c6188328d, retrieved 2026-10-10, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).