Texas Instruments SN74CBTLV3257-Q1 FET Multiplexer/Demultiplexer
Texas Instruments SN74CBTLV3257-Q1 FET Multiplexer/Demultiplexer switch IC is an automotive 3.3V, 4-bit 1-of-2 high-speed analog switch with partial-power-down mode. The Ioff feature prevents damaging current from backflowing through the device when it is powered down. The SN74CBTLV3257-Q1 IC features latch-up performance exceeding 100mA per JESD 78, Class II. The SN74CBTLV3257-Q1 device is an AEC-Q100-qualified device for automotive applications. This switch is ideal for analog and digital multiplexing and demultiplexing, diagnostics, monitoring, body control modules, Battery Management Systems (BMS), ADAS, automotive head units, and telematics.
Features
- 5Ω switch connection between two ports
- Rail-to-Rail switching on data I/O ports
- Ioff supports partial-power-down mode operation
- Latch-up performance exceeds 100mA per JESD 78, Class II
- 2:1 SPDT configuration
- 5000mΩ RON typical
- 2.3V to 3.6V supply voltage range
- 200MHz bandwidth
- Analog, I2C, I2S, JTAG, RGMII, SPI, TDM, and UART protocols
- -40°C to 125°C operating temperature range
- ESD protection exceeds JESD 22:
- 2000V human-body model (A114-A)
- 200V machine model (A115-A)
Applications
- Analog and digital multiplexing and demultiplexing
- Diagnostics and monitoring
- Zonal architecture
- Body control modules
- Battery Management Systems (BMS)
- HVAC control module
- Advanced Driver-Assistance Systems (ADAS)
- On-board (OBC) and wireless charging
- Automotive head unit
- Telematics
Application Diagram
Block Diagram
Published: 2026-03-31
| Updated: 2026-04-06