SN74CB3Q32245ZKER

Overview

The SN74CB3Q32245ZKER is a high-bandwidth FET bus switch from the CB3Q family, organized as four independent 8-bit switches. It operates with a VCC supply range of 2.3 V to 3.6 V and supports data I/O voltages up to 5.5 V. The device features low ON-state resistance (ron) of 5 Ω typical at 2.5 V and low input/output capacitance of 4 pF typical. Propagation delay is 0.18 ns to 0.3 ns. It includes Ioff circuitry for partial-power-down mode and meets JESD 78 Class II latch-up standards.

Feature Summary

• High-bandwidth data path utilizing charge pump technology for low and flat ON-state resistance across operating ranges.
• Supports rail-to-rail switching on data ports with 5-V tolerant I/Os regardless of device power state.
• Bidirectional data flow capability with near-zero propagation delay and fast control input switching frequency.
• Integrated Ioff circuitry prevents damaging backflow current during partial-power-down operations.

Applications

• PCI interface systems
• Memory interleaving architectures
• Bus isolation circuits
• Low-distortion signal gating

Procurement Notes

Verify that the ordering suffix ZKER corresponds to the lead-free LFBGA package variant. Confirm the specific tape and reel packing quantity matches system requirements. Ensure the component meets RoHS compliance standards required by the target assembly process. Cross-reference the manufacturer part number against the latest datasheet revision to validate electrical characteristics.

Selection Notes

Select this component when designing broadband communications or data-intensive computing systems requiring high bandwidth. The CB3Q family provides optimized interfaces for networking applications. Consider the 96-pin LFBGA package constraints for PCB layout. Evaluate the 5-V tolerant I/O capability if interfacing with mixed-voltage logic levels.

Part Context

This device belongs to the Widebus+ family of Texas Instruments. It is designed specifically for high-bandwidth applications where minimal signal distortion is critical. The architecture utilizes a charge pump to elevate gate voltage, ensuring consistent performance over the specified temperature range.

Replacement Considerations

SN74CB3Q32245GKER is the non-lead-free equivalent in the same package.