SN74CBTLV3861PWE4

Overview

The SN74CBTLV3861PWE4 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 typical on-state resistance (ron) of 5 Ω at VCC = 3 V and up to 40 Ω at VCC = 2.3 V. Propagation delay (tpd) ranges from 0.15 ns to 0.25 ns depending on the supply voltage. The component utilizes a 24-pin TSSOP package.

Feature Summary

• Supports partial-power-down mode via Ioff feature to prevent damaging backflow current when powered down
• Rail-to-rail switching capability on data I/O ports for full signal range handling
• Flow-through architecture designed to optimize printed circuit board layout efficiency

Applications

• Partial-power-down applications requiring isolation during power off
• High-speed bus switching in low-voltage digital systems
• Portable equipment utilizing single-supply operation

Procurement Notes

Verify that the ordering suffix 'E4' corresponds to lead-free and RoHS-compliant specifications as indicated in manufacturer documentation. Confirm the package type matches the required PCB footprint, specifically the 24-pin TSSOP configuration. Ensure control inputs are properly biased to VCC or GND to maintain stable device operation.

Selection Notes

Select this component for designs requiring low on-state resistance and high-speed signal transmission within a 2.3 V to 3.6 V supply range. The flow-through pinout facilitates efficient routing compared to other architectures. Verify compatibility with system voltage levels and ensure adequate thermal management for the TSSOP package under maximum load conditions.

Part Context

This part belongs to the SN74CBTLV3861 family of low-voltage bus switches. It provides ten bits of switching functionality in a single integrated circuit. The device is distinct from higher-voltage variants like the SN74CBT3861, which operate at 4.5 V to 5.5 V. The E4 suffix denotes environmental compliance attributes specific to the manufacturing lot.

Replacement Considerations

SN74CBTLV3861PWR serves as a direct functional equivalent with identical electrical characteristics and pinout. SN74CBTLV3861DW offers the same performance in a SOIC package. SN74CBTLV3861DBQR provides the functionality in an SSOP package.