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SN74CB3Q3251PWR
Public Made by Adomby adom
Texas Instruments Analog Switches, Multiplexers, TSSOP-16-175mil. 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
markdownSN74CB3Q3251PWR
Texas Instruments · Analog Switches, Multiplexers · TSSOP-16-175mil
SN74CB3Q3251PWR from Texas Instruments, in a TSSOP-16-175mil. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | B4 | bidirectional | Data I/O port B4 for FET multiplexer data path; supports bidirectional 0-5V signaling with 4Ω typical ON-state resistance when selected via S0-S2 and OE low. |
| 2 | B3 | bidirectional | Data I/O port B3 for FET multiplexer data path; supports bidirectional 0-5V signaling with 4Ω typical ON-state resistance when selected via S0-S2 and OE low. |
| 3 | B2 | bidirectional | Data I/O port B2 for FET multiplexer data path; supports bidirectional 0-5V signaling with 4Ω typical ON-state resistance when selected via S0-S2 and OE low. |
| 4 | B1 | bidirectional | Data I/O port B1 for FET multiplexer data path; supports bidirectional 0-5V signaling with 4Ω typical ON-state resistance when selected via S0-S2 and OE low. |
| 5 | A | bidirectional | Data I/O port A for FET multiplexer common path; supports bidirectional 0-5V rail-to-rail signaling with 4Ω typical ON-state resistance. |
| 6 | NC | unconnected | No internal connection. |
| 7 | OE | input | Output enable input (active low) controlling FET multiplexer enable with 20 MHz maximum switching frequency; low connects A port to selected B port, high creates high-impedance state. |
| 8 | GND | power_in | Ground reference (0V). |
| 9 | S2 | input | Select input 2 for 1-of-8 multiplexer data path selection; accepts 0-5.5V TTL/CMOS logic levels. |
| 10 | S1 | input | Select input 1 for 1-of-8 multiplexer data path selection; accepts 0-5.5V TTL/CMOS logic levels. |
| 11 | S0 | input | Select input 0 for 1-of-8 multiplexer data path selection; accepts 0-5.5V TTL/CMOS logic levels. |
| 12 | B8 | bidirectional | Data I/O port B8 for FET multiplexer data path; supports bidirectional 0-5V signaling with 4Ω typical ON-state resistance when selected via S0-S2 and OE low. |
| 13 | B7 | bidirectional | Data I/O port B7 for FET multiplexer data path; supports bidirectional 0-5V signaling with 4Ω typical ON-state resistance when selected via S0-S2 and OE low. |
| 14 | B6 | bidirectional | Data I/O port B6 for FET multiplexer data path; supports bidirectional 0-5V signaling with 4Ω typical ON-state resistance when selected via S0-S2 and OE low. |
| 15 | B5 | bidirectional | Data I/O port B5 for FET multiplexer data path; supports bidirectional 0-5V signaling with 4Ω typical ON-state resistance when selected via S0-S2 and OE low. |
| 16 | VCC | power_in | Supply voltage input; 2.3V to 3.6V operating range with typical consumption of 1mA supplying internal charge pump for FET pass transistor gate drive. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-16-175mil |
| Category | Interface |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
SN74CB3Q3251PWR - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16-175mil (KiCad packages3D, STEP)
- 3D model files:
sn74cb3q3251pwr-etched.step/sn74cb3q3251pwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74cb3q3251pwr.step/sn74cb3q3251pwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (26 pp, sha256
c17910e9e247dc05, retrieved 2026-09-22, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).