SN74CBT16861DLR

Overview

The SN74CBT16861DLR is a 20-bit FET bus switch manufactured by Texas Instruments, organized as two independent 10-bit switches. It operates within a supply voltage range of 4 V to 5.5 V and supports an operating temperature from -40°C to 85°C. The device features TTL-compatible input levels with a maximum propagation delay of 0.35 ns at 4 V and 0.25 ns at 5 V. On-state resistance (ron) ranges from 5 Ω to 22 Ω depending on voltage and current conditions. It is housed in a 48-pin SSOP package.

Feature Summary

• Provides high-speed bus switching for 20 bits using low on-state resistance FET technology.
• Features separate output-enable inputs for each of the two 10-bit switch sections.
• Maintains TTL-compatible input levels for direct interface with standard logic families.

Applications

• High-speed data routing between ports
• Bus switching applications requiring minimal propagation delay
• Portable equipment utilizing single-supply operation

Procurement Notes

Verify that the specific orderable part number matches the required package type, as the SN74CBT16861 family includes variants such as DGGR, DGVR, and DL. Confirm the moisture sensitivity level and reflow temperature profile requirements against your assembly process specifications before finalizing procurement.

Selection Notes

Select this component when a 20-bit widebus solution is required with low insertion loss. Ensure the design accommodates the specified 4 V to 5.5 V supply range. Verify that the thermal impedance characteristics of the SSOP package align with the expected power dissipation in the target application environment.

Part Context

This device belongs to the Widebus family of bus switches designed for high-density data transfer. It serves as a digital interconnect solution allowing flexible signal routing. The SN74CBT16861DLR specifically utilizes the SSOP form factor, distinguishing it from TSSOP or TVSOP variants within the same functional family.

Replacement Considerations

Public confirmed substitute part numbers: SN74CBT16861DGVR, SN74CBT16861DGGR.