74ALVC164245ZQLR

Overview

The SN74ALVC164245ZQLR is a 16-bit level-shifting bus transceiver from Texas Instruments, featuring dual independent power rails for voltage translation between 2.5V and 3.3V, or 3.3V and 5V domains. It operates within a supply voltage range of 2.3V to 3.6V on Port A and 3V to 5.5V on Port B. The device provides three-state outputs with a maximum propagation delay of 5.8ns at 3.3V and output drive currents of ±24mA. It supports LVTTL input/output levels and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Dual-supply architecture enables bidirectional voltage translation between 2.5V/3.3V and 3.3V/5V logic families
• High-speed performance with low propagation delay for efficient data transfer across different voltage domains
• Robust latch-up protection exceeding 250mA per JESD17 standards for enhanced reliability

Applications

• Electronic point-of-sale (EPOS) systems requiring mixed-voltage interfacing
• Peripheral devices connecting 3.3V controllers to 5V sensors or memory
• Wireless and telecommunications infrastructure utilizing multi-voltage signal paths
• Wearable health and fitness equipment with compact mixed-signal requirements

Procurement Notes

Verify the specific suffix ZQLR against official Texas Instruments documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with target voltage domains before integration. Cross-reference RoHS compliance status and moisture sensitivity levels as required by assembly processes. Confirm availability through authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when interfacing 16-bit buses between 2.5V, 3.3V, and 5V logic families. It is suitable for applications requiring bidirectional data flow with high drive capability. Consider the SSOP or BGA package options based on board space constraints. Verify that the operating temperature range meets environmental requirements for the intended deployment scenario.

Part Context

This device belongs to the SN74ALVC164245 family of widebus transceivers designed for high-density digital interfaces. It integrates two independent 8-bit circuits into a single package, optimizing board real estate. The ALVC series offers advanced CMOS technology for low power consumption and high speed, making it ideal for portable and battery-operated systems requiring reliable voltage translation.

Replacement Considerations

Publicly confirmed substitute part numbers include 74ALVC164245DGG-QJ and 74ALVC164245PAG. Verify pinout compatibility and electrical parameters before substitution.