SN74CBTLV3861PWR

Overview

The SN74CBTLV3861PWR is a low-voltage 10-bit FET bus switch manufactured by Texas Instruments. It operates within a supply voltage range of 2.3 V to 3.6 V and supports an operating temperature range from -40°C to +85°C. The device features a maximum on-state resistance of 40 Ohms and a maximum propagation delay of 250 ps. It utilizes a single OE control input to manage the connection between Port A and Port B, housed in a 24-pin TSSOP package.

Feature Summary

• Provides ten bits of high-speed bus switching with rail-to-rail data I/O port capability
• Supports partial-power-down mode via Ioff feature to prevent damaging backflow current during power-off isolation
• Features flow-through architecture designed to optimize printed circuit board layout efficiency

Applications

• Partial-power-down applications requiring safe isolation during power cycles
• High-speed bus switching for bidirectional data transfer
• Low-voltage digital logic interfacing

Procurement Notes

Verify that the specific orderable part number matches the required tape and reel packaging configuration. Confirm RoHS compliance status and lead finish specifications against project requirements. Ensure the moisture sensitivity level rating aligns with the assembly process timeline. Cross-reference the top-side marking code to validate the component revision and manufacturing origin.

Selection Notes

Select this component when a low-voltage 10-bit bus switch is required for systems operating between 2.3 V and 3.6 V. The device is suitable for designs prioritizing minimal propagation delay and low on-state resistance. Consider the TSSOP-24 package dimensions for PCB footprint constraints. Verify that the single OE control input logic levels are compatible with the system's driving signals.

Part Context

This device belongs to the SN74CBTLV3861 family of low-voltage bus switches. It serves as a general-purpose solution for connecting two ports with minimal signal degradation. The product line includes various package options such as SOIC, SSOP, and TVSOP, all sharing identical electrical characteristics and functional pinouts.

Replacement Considerations

SN74CBTLV3861PW

FAQ

How does the device handle partial-power-down scenarios?

The Ioff feature ensures that damaging current will not backflow through the device when it is powered down, providing isolation during power off.

What is the function of the OE input pin?

When the output enable (OE) input is low, the 10-bit bus switch connects Port A to Port B. When OE is high, the switch opens, creating a high-impedance state between the ports.