74LVCHR16245ALRG4

Overview

The SN74LVCHR16245A is a 16-bit (dual-octal) noninverting bus transceiver designed for 1.65-V to 3.6-V VCC operation. It features inputs that accept voltages up to 5.5 V, enabling mixed-mode signal operation in asynchronous communication between data buses. The device supports partial power-down applications via Ioff circuitry and includes active bus-hold on data inputs to eliminate external pullup or pulldown resistors. All outputs incorporate equivalent 26-Ω series resistors to minimize overshoot and undershoot without requiring external components.

Feature Summary

• Operates from 1.65 V to 3.6 V with inputs accepting voltages up to 5.5 V
• Supports live insertion and back-drive protection through Ioff feature
• Active bus-hold circuitry eliminates the need for external pullup or pulldown resistors
• Outputs include equivalent 26-Ω series resistors to reduce signal ringing

Applications

• Telecom infrastructures
• Industrial transport systems
• Wireless infrastructures
• Servers
• Tests and measurements equipment

Procurement Notes

Verify the specific package type required for the design, as the LVCHR16245A family is available in SSOP, TSSOP, TVSOP, and BGA configurations. Confirm the operating temperature range matches the application environment, noting that certain packages are rated for -40°C to 85°C while others support -40°C to 125°C. Ensure the ordering suffix corresponds to the desired tape-and-reel quantity and lead finish specifications provided in the manufacturer's orderable addendum.

Selection Notes

Select this component when designing systems requiring bidirectional level translation between 1.65-V and 5.5-V domains. The device is suitable for applications needing high drive capability with integrated series resistance to control signal integrity. Consider the specific package thermal characteristics and pinout if utilizing multiple bit logic functions within a single enclosure. Verify that the input transition rates comply with the specified delta-t/delta-v requirements to ensure proper switching performance.

Part Context

This device belongs to Texas Instruments' Widebus Family of logic products. It is part of the SN74LVCHR16245A series, which provides robust solutions for high-density bus interfacing. The technology utilizes CMOS processes to achieve balanced output drive and low power consumption. The product line is engineered for reliability in demanding industrial and telecommunications environments where mixed-voltage signaling is prevalent.

Replacement Considerations

Direct replacements within the same family include SN74LVCHR16245ADLGR and SN74LVCHR16245AVR depending on the required package style. Cross-family alternatives such as the SN74LVC16245A offer similar functionality but may differ in voltage tolerance and drive strength specifications. Always verify pin compatibility and electrical parameters before substituting.