SN74CBT16210CDLR

Overview

The SN74CBT16210CDLR is a high-speed TTL-compatible FET bus switch from the Widebus family, organized as two 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 (ron) with a maximum value of 12 Ω at 4 V and 3 Ω typical at 4.5 V. Propagation delay is specified at a maximum of 250 ps at 4 V and 150 ps at 5 V. It includes active undershoot protection for off-isolation up to -2 V on A and B ports.

Feature Summary

• Active undershoot-protection circuitry ensures proper OFF state during signal events down to -2 V
• Supports partial-power-down mode via Ioff feature to prevent damaging backflow current
• Bidirectional data flow with near-zero propagation delay characteristics
• Low input/output capacitance minimizes loading and signal distortion

Applications

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

Procurement Notes

Verify the SSOP-48 package designation and DL marking code when sourcing. Confirm RoHS compliance and NIPDAU lead finish status against the latest Package Option Addendum. Ensure control inputs are tied to VCC or GND to maintain the high-impedance state during power-up or power-down sequences.

Selection Notes

Select this component for designs requiring wide voltage compatibility between 4 V and 5.5 V supplies. The dual 10-bit architecture allows flexible configuration as separate or combined buses. Verify that the 12 Ω maximum ON-resistance meets system impedance requirements under worst-case operating conditions.

Part Context

This part belongs to the SN74CBT16210C series within Texas Instruments' Widebus family. It is manufactured in an SSOP-48 package and is available in tape and reel format. The device is designed for digital and analog applications requiring high-speed switching capabilities.

Replacement Considerations

SN74CBT16210CDL is the tube version of the same device. SN74CBT16210CDGGR and SN74CBT16210CDGVR offer identical functionality in TSSOP and TVSOP packages respectively.

FAQ

How does the device handle undershoot events?

Active undershoot-protection circuitry senses undershoot events on the A and B ports and ensures the switch remains in the proper OFF state, providing protection up to -2 V.

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.