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SN74CBT3244CPWR
Public Made by Adomby adom
Texas Instruments Analog Switches, Multiplexers, TSSOP-20. Datasheet-verified pinout, 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
markdownSN74CBT3244CPWR
Texas Instruments · Analog Switches, Multiplexers · TSSOP-20
SN74CBT3244CPWR from Texas Instruments, in a TSSOP-20. 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 | 1OE | input | Output enable input for 4-bit bus switch 1; active low, connects A1 to B1 for bidirectional data flow when low, isolates to high-impedance when high. |
| 2 | 1A1 | bidirectional | Bidirectional data I/O for 4-bit switch 1 port A bit 1; supports 0 to 5-V signaling levels. |
| 3 | 2B4 | bidirectional | Bidirectional data I/O for 4-bit switch 2 port B bit 4; supports 0 to 5-V signaling levels. |
| 4 | 1A2 | bidirectional | Bidirectional data I/O for 4-bit switch 1 port A bit 2; supports 0 to 5-V signaling levels. |
| 5 | 2B3 | bidirectional | Bidirectional data I/O for 4-bit switch 2 port B bit 3; supports 0 to 5-V signaling levels. |
| 6 | 1A3 | bidirectional | Bidirectional data I/O for 4-bit switch 1 port A bit 3; supports 0 to 5-V signaling levels. |
| 7 | 2B2 | bidirectional | Bidirectional data I/O for 4-bit switch 2 port B bit 2; supports 0 to 5-V signaling levels. |
| 8 | 1A4 | bidirectional | Bidirectional data I/O for 4-bit switch 1 port A bit 4; supports 0 to 5-V signaling levels. |
| 9 | 2B1 | bidirectional | Bidirectional data I/O for 4-bit switch 2 port B bit 1; supports 0 to 5-V signaling levels. |
| 10 | GND | power_in | Ground; power supply return path. |
| 11 | 2A1 | bidirectional | Bidirectional data I/O for 4-bit switch 2 port A bit 1; supports 0 to 5-V signaling levels. |
| 12 | 1B4 | bidirectional | Bidirectional data I/O for 4-bit switch 1 port B bit 4; supports 0 to 5-V signaling levels. |
| 13 | 2A2 | bidirectional | Bidirectional data I/O for 4-bit switch 2 port A bit 2; supports 0 to 5-V signaling levels. |
| 14 | 1B3 | bidirectional | Bidirectional data I/O for 4-bit switch 1 port B bit 3; supports 0 to 5-V signaling levels. |
| 15 | 2A3 | bidirectional | Bidirectional data I/O for 4-bit switch 2 port A bit 3; supports 0 to 5-V signaling levels. |
| 16 | 1B2 | bidirectional | Bidirectional data I/O for 4-bit switch 1 port B bit 2; supports 0 to 5-V signaling levels. |
| 17 | 2A4 | bidirectional | Bidirectional data I/O for 4-bit switch 2 port A bit 4; supports 0 to 5-V signaling levels. |
| 18 | 1B1 | bidirectional | Bidirectional data I/O for 4-bit switch 1 port B bit 1; supports 0 to 5-V signaling levels. |
| 19 | 2OE | input | Output enable input for 4-bit bus switch 2; active low, connects A2 to B2 for bidirectional data flow when low, isolates to high-impedance when high. |
| 20 | VCC | power_in | Positive power supply; operating voltage range 4 V to 5.5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-20 |
| Category | Interface |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
SN74CBT3244CPWR - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
sn74cbt3244cpwr-etched.step/sn74cbt3244cpwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74cbt3244cpwr.step/sn74cbt3244cpwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (22 pp, sha256
2abe5ea07aad7afd, retrieved 2026-09-23, 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).