SN74CBT16210CDGVR

Overview

The SN74CBT16210CDGVR is a high-speed TTL-compatible FET bus switch from the Widebus family, housed in a 48-pin TVSOP package. It comprises two independent 10-bit switches or one 20-bit switch with separate output-enable inputs. Operating within a VCC range of 4 V to 5.5 V, it supports bidirectional data flow with near-zero propagation delay (typical 0.15 ns at 5 V). The device features low ON-state resistance (3 Ω typical) and low input/output capacitance (5.5 pF typical), minimizing signal distortion. It includes active undershoot protection up to -2 V on A and B ports, Ioff for partial-power-down isolation, and latch-up performance exceeding 100 mA per JESD 78 Class II.

Feature Summary

• Active undershoot-protection circuitry on A and B ports ensures proper OFF state during voltage dips down to -2 V.
• Ioff feature enables partial-power-down mode by preventing damaging backflow current when the device is unpowered.
• Control inputs are compatible with TTL or 5-V/3.3-V CMOS outputs, supporting versatile logic interfacing.
• Data I/Os support signaling levels ranging from 0.8 V to 5 V, accommodating various digital and analog applications.

Applications

• PCI interface bus switching
• Memory interleaving circuits
• Bus isolation and signal gating

Procurement Notes

Verify the ordering suffix 'DGVR' corresponds to the TVSOP-48 package and tape-and-reel packaging configuration. Confirm that the component status remains Active as listed in the latest Texas Instruments documentation. Ensure the operating temperature range of -40°C to 85°C aligns with system thermal requirements before finalizing procurement specifications.

Selection Notes

Select this component for designs requiring high-speed bidirectional data transfer with minimal propagation delay. The dual 10-bit architecture allows flexible configuration as either separate buses or a single 20-bit path. Consider the low ON-state resistance and capacitance for maintaining signal integrity in high-frequency applications. Verify control input compatibility with the system's logic voltage levels.

Part Context

This part belongs to the SN74CBT16210C series, which includes variants such as SN74CBT16210CDL, SN74CBT16210CDLR, and SN74CBT16210CDGG. These devices share identical electrical characteristics but differ in package type and shipping configuration. The CDGVR variant specifically utilizes the TVSOP package, distinguishing it from the SSOP and TSSOP options available in the same product family.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include SN74CBT16210CDGGR (TSSOP package) and SN74CBT16210CDLR (SSOP package). These alternatives maintain functional equivalence but require verification of package footprint compatibility and reflow profile adherence during replacement planning.

FAQ

How does the SN74CBT16210CDGVR handle partial-power-down scenarios?

The device incorporates an Ioff feature that prevents damaging current from backflowing through the switch when VCC is zero, ensuring complete isolation between ports during power-off states.

What is the maximum undershoot voltage tolerated by the A and B ports?

Active undershoot-protection circuitry on the A and B ports provides protection against undershoot events down to -2 V while maintaining the switch in the correct OFF state.