SN74CB3Q3253DGVR

Overview

The SN74CB3Q3253DGVR is a dual 1-of-4 FET multiplexer/demultiplexer from Texas Instruments, housed in a 16-pin TVSOP package. It operates within a supply voltage range of 2.3V to 3.6V and supports data I/O levels up to 5.5V. The device features a high-bandwidth data path capable of up to 500MHz, with a typical ON-state resistance (ron) of 4Ω at VCC = 3.3V. Propagation delay ranges from 0.12ns to 0.18ns for data paths and 1.5ns to 6.7ns for control inputs. It includes low input/output capacitance (Cio(OFF) typically 3.5pF) and supports partial-power-down mode via Ioff.

Feature Summary

• High-bandwidth data path supporting frequencies up to 500MHz
• 5V tolerant I/Os allowing operation with powered-up or powered-down devices
• Low and flat ON-state resistance characteristics over the operating range
• Rail-to-rail switching capability on data I/O ports

Applications

• Video broadcasting IP-based multi-format transcoder
• Video communications system
• USB interface bus isolation
• Differential signal interface bus isolation

Procurement Notes

Verify that the ordering suffix DGVR corresponds specifically to the TVSOP-16 package variant. Confirm the component meets AEC-Q100 qualification requirements if automotive application is intended. Ensure ESD handling precautions are followed during assembly due to sensitivity ratings. Check datasheet revision history for any recent parameter updates before finalizing design specifications.

Selection Notes

Select this component when bidirectional data flow with near-zero propagation delay is required. It is suitable for applications needing rail-to-rail switching between 0V and 5V signals while powered by 2.5V or 3.3V supplies. Consider its low power consumption and undershoot clamp diodes for sensitive digital and analog signal gating tasks.

Part Context

This device belongs to the SN74CB3Q family of high-speed FET bus switches. It utilizes a charge pump to elevate gate voltage, ensuring consistent ON-state resistance. The CB3Q series is designed for broadband communications and data-intensive computing systems, offering optimized interface designs for networking applications.

Replacement Considerations

SN74CB3T3253DGVR: Similar functionality but may differ in specific electrical parameters or qualification standards.

FAQ

Does the SN74CB3Q3253 support partial-power-down mode?

Yes, the device is fully specified for partial-power-down applications using the Ioff circuitry, which prevents damaging current backflow through the device when powered down.

What is the maximum switching frequency for the control inputs?

The maximum switching frequency for the OE or S control inputs is 20MHz.