SN74CBTR16861DL

Overview

The SN74CBTR16861DL is a 20-bit FET bus switch manufactured by Texas Instruments, housed in a 48-pin SSOP (DL) package. It provides high-speed TTL-compatible bus switching with an on-state resistance of 25 Ω between ports. The device operates within a supply voltage range of 4 V to 5.5 V and supports an operating temperature range from -40°C to +85°C. It features two independent 10-bit switches with separate output-enable inputs.

Feature Summary

• Provides 20 bits of high-speed bus switching organized as one dual 10-bit switch
• Features low on-state resistance for minimal propagation delay
• Includes equivalent series resistors to reduce signal-reflection noise

Applications

• High-speed data routing applications requiring TTL compatibility
• Systems needing signal reflection reduction without external terminating resistors
• Bus switching architectures utilizing separate output-enable control

Procurement Notes

Verify the specific DL suffix indicates the SSOP-48 package configuration. Confirm the active status and lead finish details against the latest manufacturer documentation. Ensure design compliance with absolute maximum ratings regarding supply voltage and clamp current limits during integration.

Selection Notes

Select this component when a 20-bit wide bus switch with TTL input levels is required. The integrated series resistance simplifies layout by eliminating external termination components. Verify that the 48-pin SSOP footprint aligns with the target PCB design constraints and thermal requirements.

Part Context

This part belongs to the Widebus family of digital bus switches from Texas Instruments. It is designed for applications requiring efficient interconnection between multiple data buses. The device utilizes FET technology to achieve low resistance and fast switching speeds suitable for high-performance logic systems.

Replacement Considerations

SN74CBTR16861DGVR

FAQ

How does the device handle signal reflections?

The device incorporates equivalent 25-Ω series resistors to reduce signal-reflection noise, which eliminates the need for external terminating resistors.

What is the organization of the internal switches?

The device is organized as one dual 10-bit switch with separate output-enable (OE) inputs for each 10-bit section.