SN74CB3Q3244PWRE4

Overview

The SN74CB3Q3244PWRE4 is an automotive-grade, 8-bit FET bus switch operating within a VCC range of 2.3V to 3.6V. It features high-bandwidth data paths up to 500MHz and supports rail-to-rail switching from 0V to 5V with a 3.3V supply. The device includes Ioff circuitry for partial-power-down isolation and provides bidirectional data flow with near-zero propagation delay (max 2ns). It utilizes a charge pump to maintain low ON-state resistance across the operating range.

Feature Summary

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

Applications

• Differential signal interface
• Memory interleaving
• Bus isolation
• Low-distortion signal gating

Procurement Notes

Verify that the ordering suffix 'E4' corresponds to lead-free packaging and RoHS compliance as specified in the manufacturer's documentation. Confirm the PW package designation matches the required TSSOP-20 footprint for your PCB layout. Ensure the component meets the -40°C to +85°C operating temperature range required for your specific application environment.

Selection Notes

Select this component when designing systems requiring high-speed data transfer with minimal signal degradation. It is suitable for applications needing 5V-tolerant I/Os while powered by lower voltage supplies like 2.5V or 3.3V. Consider its automotive qualification if the target environment demands high reliability and robust latch-up performance exceeding standard industrial specifications.

Part Context

This part belongs to the SN74CB3Q series, which represents Texas Instruments' automotive-grade line of high-bandwidth bus switches. These devices are engineered for broadband communications, networking, and data-intensive computing systems where signal integrity and fast switching speeds are critical requirements.

Replacement Considerations

SN74CB3Q3244PWR