component
SN74CBT3253CDBR
Public Made by Adomby adom
Texas Instruments Signal Switches, Multiplexers, Decoders, SSOP-16-208mil. 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
markdownSN74CBT3253CDBR
Texas Instruments · Signal Switches, Multiplexers, Decoders · SSOP-16-208mil
SN74CBT3253CDBR from Texas Instruments, in a SSOP-16-208mil. 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 input for multiplexer 1, active low; when high, a high-impedance state exists between the 1A and 1B ports. |
| 2 | S1 | input | Select input S1 that, with S0, selects which B port connects to the A port in each multiplexer/demultiplexer; control inputs accept TTL or 5-V/3.3-V CMOS levels. |
| 3 | 1B4 | bidirectional | Multiplexer 1 B4 data port, connected to 1A when OE is low and S1 S0 = H H; supports 0 to 5-V signaling with undershoot protection to -2 V. |
| 4 | 1B3 | bidirectional | Multiplexer 1 B3 data port, connected to 1A when OE is low and S1 S0 = H L; supports 0 to 5-V signaling with undershoot protection to -2 V. |
| 5 | 1B2 | bidirectional | Multiplexer 1 B2 data port, connected to 1A when OE is low and S1 S0 = L H; supports 0 to 5-V signaling with undershoot protection to -2 V. |
| 6 | 1B1 | bidirectional | Multiplexer 1 B1 data port, connected to 1A when OE is low and S1 S0 = L L; supports 0 to 5-V signaling with undershoot protection to -2 V. |
| 7 | 1A | bidirectional | Multiplexer 1 common A data port, connected to one of 1B1-1B4 as selected by S1 and S0 when 1OE is low. |
| 9 | 2A | bidirectional | Multiplexer 2 common A data port, connected to one of 2B1-2B4 as selected by S1 and S0 when 2OE is low. |
| 10 | 2B1 | bidirectional | Multiplexer 2 B1 data port, connected to 2A when OE is low and S1 S0 = L L; supports 0 to 5-V signaling with undershoot protection to -2 V. |
| 11 | 2B2 | bidirectional | Multiplexer 2 B2 data port, connected to 2A when OE is low and S1 S0 = L H; supports 0 to 5-V signaling with undershoot protection to -2 V. |
| 12 | 2B3 | bidirectional | Multiplexer 2 B3 data port, connected to 2A when OE is low and S1 S0 = H L; supports 0 to 5-V signaling with undershoot protection to -2 V. |
| 13 | 2B4 | bidirectional | Multiplexer 2 B4 data port, connected to 2A when OE is low and S1 S0 = H H; supports 0 to 5-V signaling with undershoot protection to -2 V. |
| 14 | S0 | input | Select input S0 that, with S1, selects which B port connects to the A port in each multiplexer/demultiplexer; control inputs accept TTL or 5-V/3.3-V CMOS levels. |
| 15 | 2OE | input | Output-enable input for multiplexer 2, active low; when high, a high-impedance state exists between the 2A and 2B ports. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-16-208mil |
| Category | Logic |
| Pins | 14 |
CAD (KiCad official)
- Symbol:
SN74CBT3253CDBR - Footprint:
Package_SO:SSOP-16_5.3x6.2mm_P0.65mm - 3D model: SSOP-16-208mil (KiCad packages3D, STEP)
- 3D model files:
sn74cbt3253cdbr-etched.step/sn74cbt3253cdbr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74cbt3253cdbr.step/sn74cbt3253cdbr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (26 pp, sha256
89e75930549ef68c, retrieved 2026-09-30, 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).