SN74CB3Q3253DGVRE4

Overview

The SN74CB3Q3253DGVRE4 is a dual 1-of-4 FET multiplexer/demultiplexer bus switch from Texas Instruments. It operates within a VCC range of 2.3V to 3.6V and supports bidirectional data flow with near-zero propagation delay. The device features high-bandwidth data paths up to 500MHz, 5V tolerant I/Os, and low on-state resistance (ron = 4Ω typical). It utilizes a charge pump for flat ON-state resistance characteristics and includes Ioff circuitry for partial-power-down mode operation.

Feature Summary

• High-bandwidth data path supporting frequencies up to 500MHz
• Rail-to-rail switching capability on data I/O ports
• Low input and output capacitance to minimize signal distortion
• Ioff circuitry enables safe partial-power-down mode operation

Applications

• Video broadcasting IP-based multi-format transcoders
• Video communications systems
• USB interface connections
• Differential signal interface bus isolation

Procurement Notes

Verify the DGV package designation corresponds to the TVSOP-16 form factor required for your PCB layout. Confirm that the E4 suffix aligns with current environmental compliance standards before finalizing procurement. Ensure control inputs are tied to valid logic levels during power transitions to maintain proper device state.

Selection Notes

Select this component when designing systems requiring high-speed signal routing between multiple sources. The dual 1-of-4 configuration allows independent control of two separate data buses. Verify that the 5V tolerant I/Os match the voltage levels of connected peripherals to ensure reliable signal integrity across the operating temperature range.

Part Context

This part belongs to the SN74CB3Q family of low-voltage high-bandwidth bus switches. It shares functional similarities with other CB3Q devices but offers specific dual multiplexer/demultiplexer architecture. The DGV package provides a compact surface-mount solution suitable for space-constrained designs in consumer electronics and networking equipment.

Replacement Considerations

SN74CB3Q3253DGVR

FAQ

How does the device handle partial-power-down scenarios?

The SN74CB3Q3253DGVRE4 includes Ioff circuitry that prevents damaging current backflow through the device when it is powered down while the system remains active.

What is the maximum switching frequency for the control inputs?

The maximum switching frequency for the OE or S control inputs is specified as 20MHz under recommended operating conditions.