SN74CBTLV3861DBQR

Overview

The SN74CBTLV3861DBQR 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 rail-to-rail switching on data I/O ports and includes an Ioff function that supports partial-power-down mode operation. It provides ten bits of high-speed bus switching with a flow-through architecture optimized for PCB layout.

Feature Summary

• Supports partial-power-down applications using the Ioff feature to prevent damaging current backflow when powered down
• Features a flow-through architecture designed to optimize printed circuit board layout
• Provides rail-to-rail switching capability on all data input/output ports

Applications

• Partial-power-down mode operations requiring isolation during power off
• High-speed bus switching in low-voltage digital systems
• Data port connections requiring minimal propagation delay

Procurement Notes

Verify the specific ordering suffix DBQR corresponds to the SSOP package and tape-and-reel carrier configuration. Confirm the active production status and moisture sensitivity level ratings prior to procurement. Ensure compatibility with the required lead finish and reflow temperature profiles specified in the packaging information addendum.

Selection Notes

Select this component for designs requiring a single 10-bit bidirectional bus switch within the 2.3 V to 3.6 V supply range. The device is suitable for applications needing latch-up protection exceeding 100 mA per JESD 78 Class II standards. Consider the SSOP package dimensions and thermal impedance characteristics for appropriate heat dissipation requirements.

Part Context

This part belongs to the SN74CBTLV3861 family of low-voltage FET bus switches. The family includes variants with different package options such as TSSOP, SOIC, and TVSOP. An automotive-qualified version, SN74CBTLV3861-Q1, is also available for high-reliability automotive applications targeting zero defects.

Replacement Considerations

SN74CBTLV3861PWR

FAQ

How does the Ioff feature function?

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 control logic for the bus switch?

When the output enable (OE) pin is low, the 10-bit bus switch is on, connecting port A to port B. When OE is high, the switch is open, creating a high-impedance state between the two ports.