SN74CBT16210CDGGR

Overview

The SN74CBT16210CDGGR is a high-speed TTL-compatible FET bus switch from the Widebus family, organized as two independent 10-bit switches or one 20-bit switch. It operates within a supply voltage range of 4 V to 5.5 V and supports data I/O levels from 0 V to 5 V. The device features low ON-state resistance (3 Ω typical) and bidirectional data flow with near-zero propagation delay. It includes active undershoot protection on A and B ports up to −2 V and supports partial-power-down mode via the Ioff feature.

Feature Summary

• Active undershoot-protection circuitry ensures proper OFF state during negative voltage events on A and B ports.
• Ioff feature enables partial-power-down operation by preventing damaging backflow current when powered down.
• Control inputs are compatible with TTL or 5-V/3.3-V CMOS outputs for flexible logic interfacing.
• Low input/output capacitance minimizes signal loading and distortion during switching operations.

Applications

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

Procurement Notes

Verify the specific package marking 'CBT16210C' and confirm the DGG TSSOP-48 footprint dimensions against your PCB layout. Ensure control inputs are tied to VCC or GND to maintain the high-impedance state during power-up or power-down sequences. Check RoHS compliance status and lead finish specifications in the latest packaging addendum before finalizing procurement orders.

Selection Notes

Select this component for designs requiring high-speed bidirectional data transfer with minimal propagation delay. It is suitable for applications needing support for multiple signaling levels including 0.8-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, and 5-V. Consider its low ON-state resistance and low power consumption characteristics for efficient system design.

Part Context

This part belongs to the SN74CBT16210C series, which is part of Texas Instruments' Widebus family of high-speed FET bus switches. The CDGGR suffix indicates the device is packaged in a 48-pin TSSOP (DGG) format and supplied in tape and reel quantities of 2000 units. It is designed for surface-mount assembly and operates across an industrial temperature range.

Replacement Considerations

SN74CBT16210CDLR

FAQ

How does the device handle undershoot events?

The SN74CBT16210CDGGR includes active undershoot-protection circuitry on the A and B ports that senses undershoot events up to −2 V and ensures the switch remains in the proper OFF state.

What is the function of the Ioff feature?

The Ioff feature supports partial-power-down mode operation by ensuring that damaging current will not backflow through the device when it is powered down, providing isolation during power off.