SN74CBTR16861DGVR

Overview

The SN74CBTR16861DGVR is a 20-bit FET bus switch from the Widebus family, organized as two independent 10-bit switches. It operates on a single supply voltage ranging from 4 V to 5.5 V and features TTL-compatible input levels. The device includes separate output-enable (OE) inputs for each 10-bit section. It incorporates equivalent 25-Ω series resistors to reduce signal-reflection noise, eliminating the need for external terminating resistors. The component is housed in a 48-pin TVSOP package.

Feature Summary

• Provides high-speed bus switching with low on-state resistance for minimal propagation delay.
• Features integrated equivalent 25-Ω series resistors to reduce signal-reflection noise without requiring external components.
• Includes latch-up performance exceeding 100 mA per JESD 78, Class II specifications.
• Offers ESD protection exceeding 2000-V human-body model and 200-V machine model ratings.

Applications

• High-speed data routing applications
• Bus-oriented memory and signal switching
• Portable equipment utilizing battery power

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the SN74CBTR16861 is available in multiple configurations including TSSOP, TVSOP, and SSOP. Confirm the moisture sensitivity level and lead finish details against the latest manufacturer documentation before finalizing procurement orders to ensure compatibility with assembly processes.

Selection Notes

Select this component when designing circuits requiring 20 bits of bidirectional switching controlled by TTL-compatible logic levels. Ensure the operating supply voltage remains within the 4 V to 5.5 V range. Consider the 48-pin TVSOP package dimensions if space constraints are critical, and verify that the thermal impedance characteristics meet the system's heat dissipation requirements.

Part Context

This device belongs to the Texas Instruments Widebus family, designed for high-density bus switching applications. It serves as a solution for managing multiple data lines efficiently while maintaining signal integrity through built-in termination resistors. The SN74CBTR16861DGVR variant specifically utilizes the TVSOP package format for surface-mount assembly.

Replacement Considerations

SN74CBTR16861DLR

FAQ

How does the SN74CBTR16861 handle signal reflection?

The device has 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 section.