component
SN74CBT3257DBR
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.
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README.mdadded+52@@ -0,0 +1,52 @@+# SN74CBT3257DBR++**Texas Instruments** · Signal Switches, Multiplexers, Decoders · SSOP-16-208mil++SN74CBT3257DBR 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 | S | input | TTL-compatible select input for multiplexer path control. |+| 2 | 1B1 | bidirectional | Channel 1 B1 FET switch port. |+| 3 | 1B2 | bidirectional | Channel 1 B2 FET switch port. |+| 4 | 1A | bidirectional | Channel 1 A FET switch port. |+| 5 | 2B1 | bidirectional | Channel 2 B1 FET switch port. |+| 6 | 2B2 | bidirectional | Channel 2 B2 FET switch port. |+| 7 | 2A | bidirectional | Channel 2 A FET switch port. |+| 8 | GND | power_in | Ground, negative supply reference. |+| 9 | 3A | bidirectional | Channel 3 A FET switch port. |+| 10 | 3B2 | bidirectional | Channel 3 B2 FET switch port. |+| 11 | 3B1 | bidirectional | Channel 3 B1 FET switch port. |+| 12 | 4A | bidirectional | Channel 4 A FET switch port. |+| 13 | 4B2 | bidirectional | Channel 4 B2 FET switch port. |+| 14 | 4B1 | bidirectional | Channel 4 B1 FET switch port. |+| 15 | OE | input | TTL-compatible output enable control input, active low. |+| 16 | VCC | power_out | Positive supply voltage, 4 to 5.5 V recommended operating range. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SSOP-16-208mil |+| Category | Logic |+| Pins | 16 |++## CAD (KiCad official)++- Symbol: `SN74CBT3257DBR`+- Footprint: `Package_SO:SSOP-16_5.3x6.2mm_P0.65mm`+- 3D model: SSOP-16-208mil (KiCad packages3D, STEP)+- 3D model files: `sn74cbt3257dbr-etched.step` / `sn74cbt3257dbr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74cbt3257dbr.step` / `sn74cbt3257dbr.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/sn74cbt3257) (16 pp, sha256 `71e61043466ffef3`, retrieved 2026-10-03, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-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).++[Datasheet PDF](docs/sn74cbt3257dbr-datasheet.pdf)
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