SN74CB3T3253DGVR

Overview

The SN74CB3T3253DGVR is a dual 1-of-4 FET multiplexer/demultiplexer switch IC from Texas Instruments, housed in a 16-TVSOP package. It operates within a supply voltage range of 2.3 V to 3.6 V and supports surface-mount installation. The device features two independent channels configured as 2 x 1:4 switches. Key electrical specifications include a maximum on-resistance of 8 Ohms, a maximum propagation delay of 6.7 ns, and a maximum transition time of 6.1 ns. It functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Dual-channel architecture providing two independent 1-of-4 FET switching paths for signal routing
• Low on-resistance characteristic ensuring minimal signal attenuation during conduction
• Fast switching performance with low propagation delay suitable for high-speed data applications
• Powered-off protection capability preventing current leakage when the device is unpowered

Applications

• Portable equipment requiring efficient signal path management
• Cellular phones for internal signal switching
• Personal digital assistants (PDAs) utilizing low-voltage logic interfaces
• Laptop computers managing peripheral data lines

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and tape-and-reel specifications. Confirm RoHS compliance status and lead times directly with authorized distributors or Texas Instruments prior to procurement. Ensure the selected variant matches the required TVSOP-16 pinout and thermal characteristics for your specific PCB layout constraints.

Selection Notes

Select this component when designing systems that require dual independent 1-of-4 signal routing within a compact surface-mount footprint. It is appropriate for applications demanding low power consumption and operation strictly within the 2.3 V to 3.6 V supply range. Consider its 8 Ohm on-resistance and 6.7 ns delay metrics for bandwidth requirements. Ensure the design environment accommodates the specified -40°C to +85°C industrial temperature limits.

Part Context

This part belongs to the SN74CB3T3253 series of low-voltage analog switches. It is designed for portable electronics where space and power efficiency are critical. The device integrates FET technology to provide bidirectional signal flow between four inputs/outputs and a common terminal per channel. It serves as a solution for mux/demux functions in consumer and mobile communication devices.

Replacement Considerations

Consult Texas Instruments documentation for direct pin-compatible alternatives within the same logic family. Verify functional equivalence regarding voltage ranges and on-resistance before substituting.