SN74CB3Q3245ZQNR

Overview

The SN74CB3Q3245ZQNR is an automotive-grade, high-bandwidth FET bus switch from the Widebus+ family. It features four independent 8-bit switches with separate output-enable inputs. The device utilizes a charge pump to provide low and flat ON-state resistance (ron = 5 Ω typical) for minimal propagation delay and rail-to-rail switching. It supports bidirectional data flow with near-zero propagation delay and includes undershoot clamp diodes on data and control inputs.

Feature Summary

• High-bandwidth data path supporting up to 500 MHz
• 5-V tolerant I/Os compatible with various signaling levels
• Low and flat ON-state resistance characteristics over operating range
• Rail-to-rail switching capability on data ports

Applications

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

Procurement Notes

Verify that the ZQ suffix confirms AEC-Q100 qualification for automotive use. Confirm the LFBGA package type matches the target PCB footprint. Ensure the operating temperature range of -40°C to 85°C aligns with system requirements. Check for RoHS compliance status in the latest datasheet revision.

Selection Notes

Select this component when designing systems requiring high-speed data transfer with low signal distortion. The integrated charge pump ensures consistent performance across voltage variations. Verify that the 2.3 V to 3.6 V supply range fits the system architecture. Consider the low input/output capacitance for minimizing loading effects on high-frequency buses.

Part Context

This part belongs to Texas Instruments' Widebus+ family, designed for broadband communications and data-intensive computing. It serves as a specialized solution for managing high-speed digital signals where signal integrity and low latency are critical parameters for system performance.

Replacement Considerations

SN74CB3Q3245DGVR