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SN74CBTLV3257DR
Public Made by Adomby adom
Texas Instruments Analog Switches, Multiplexers, SOIC-16. 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
markdownSN74CBTLV3257DR
Texas Instruments · Analog Switches, Multiplexers · SOIC-16
SN74CBTLV3257DR from Texas Instruments, in a SOIC-16. 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 | S | input | Select input that controls the data-flow path of the multiplexer/demultiplexer (S0 in the body text, S in the pin table). |
| 2 | 1B1 | bidirectional | Channel 1 in/out port 1 of the FET switch, with a 5 Ω switch connection between the two ports. |
| 3 | 1B2 | bidirectional | Channel 1 in/out port 2 of the FET switch, with a 5 Ω switch connection between the two ports. |
| 4 | 1A | bidirectional | Channel 1 out/in common port of the FET switch, with rail-to-rail switching on the data I/O ports. |
| 5 | 2B1 | bidirectional | Channel 2 in/out port 1 of the FET switch, with a 5 Ω switch connection between the two ports. |
| 6 | 2B2 | bidirectional | Channel 2 in/out port 2 of the FET switch, with a 5 Ω switch connection between the two ports. |
| 7 | 2A | bidirectional | Channel 2 out/in common port of the FET switch, with rail-to-rail switching on the data I/O ports. |
| 8 | GND | power_in | Ground reference for the device. |
| 9 | 3A | bidirectional | Channel 3 out/in common port of the FET switch, with rail-to-rail switching on the data I/O ports. |
| 10 | 3B2 | bidirectional | Channel 3 in/out port 2 of the FET switch, with a 5 Ω switch connection between the two ports. |
| 11 | 3B1 | bidirectional | Channel 3 in/out port 1 of the FET switch, with a 5 Ω switch connection between the two ports. |
| 12 | 4A | bidirectional | Channel 4 out/in common port of the FET switch, with rail-to-rail switching on the data I/O ports. |
| 13 | 4B2 | bidirectional | Channel 4 in/out port 2 of the FET switch, with a 5 Ω switch connection between the two ports. |
| 14 | 4B1 | bidirectional | Channel 4 in/out port 1 of the FET switch, with a 5 Ω switch connection between the two ports. |
| 15 | OE | input | Active-low output enable; the FET multiplexers/demultiplexers are disabled when OE is high, and OE must be tied to VCC through a pullup resistor to hold the high-impedance state during power up or down. |
| 16 | VCC | power_in | Power supply pin; the absolute maximum supply voltage is -0.5 V to 4.6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16 |
| Category | Interface |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
SN74CBTLV3257DR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files:
sn74cbtlv3257dr-etched.step/sn74cbtlv3257dr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74cbtlv3257dr.step/sn74cbtlv3257dr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (41 pp, sha256
ddb143a7fecbb5ee, retrieved 2026-10-07, tier: manufacturer) - 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).