SN74CB3Q16211DGVR

Overview

The SN74CB3Q16211DGVR is a high-bandwidth FET bus switch from the Widebus family, organized as two 12-bit switches or one 24-bit switch. It operates on a single supply voltage (VCC) ranging from 2.3 V to 3.6 V and utilizes an internal charge pump to elevate gate voltage for low ON-state resistance (ron). The device supports bidirectional data flow with near-zero propagation delay and features 5-V tolerant I/Os that function regardless of power state. It includes dedicated control inputs (1OE, 2OE) for independent switching.

Feature Summary

• Rail-to-rail switching capability across data ports using an internal charge pump
• High-bandwidth data path supporting up to 500 MHz operation
• Ioff circuitry enabling partial-power-down mode without damaging backflow current
• Low input/output capacitance to minimize signal distortion and capacitive loading

Applications

• AV receiver systems
• Blu-ray recorder and player interfaces
• Embedded PC architectures
• Portable audio dock connections
• DLP front projection system buses

Procurement Notes

Verify the specific package type against the datasheet's orderable addendum, as the SN74CB3Q16211 series is available in TSSOP, TVSOP, SSOP, and BGA configurations. Confirm the suffix matches the required physical dimensions and pin pitch. Ensure the selected variant meets the -40°C to +85°C operating temperature range and RoHS compliance standards required for your manufacturing process.

Selection Notes

Select this component when designing broadband communications or data-intensive computing systems requiring optimized interface solutions. It is suitable for applications needing PCI interfaces, differential signal interfacing, memory interleaving, or bus isolation. The device handles both digital and analog signals effectively due to its flat ON-state resistance characteristics over the operating range.

Part Context

This part belongs to Texas Instruments' CB3Q logic family, designed specifically for high-speed signal switching. Unlike standard logic buffers, it functions as a passive transmission gate controlled by separate enable lines. The DGVR suffix indicates the TVSOP-56 package variant, which offers a smaller footprint compared to the standard TSSOP option while maintaining identical electrical performance specifications.

Replacement Considerations

Direct substitutes within the same family include SN74CB3Q16211DGGR (TSSOP package) and SN74CB3Q16211DLR (SSOP package). Verify pin compatibility and thermal impedance differences if replacing with non-TI equivalents.