74ALVC164245DGG:11

Overview

The Nexperia 74ALVC164245DGG is a 16-bit dual supply translating transceiver with 3-state outputs, housed in a 48-pin TSSOP package. It interfaces between 3 V and 5 V buses in mixed voltage environments. The device supports bidirectional data flow controlled by direction inputs (1DIR, 2DIR) and output enable inputs (1OE, 2OE). Supply voltage ranges are 1.5 V to 3.6 V for the 3 V port (VCC(A)) and 1.5 V to 5.5 V for the 5 V port (VCC(B)). Propagation delay typically ranges from 1.0 ns to 4.3 ns depending on voltage conditions.

Feature Summary

• Dual supply architecture enabling direct translation between 3 V and 5 V logic levels
• IOFF circuitry provides partial power-down mode operation to prevent backflow current
• Overvoltage tolerant inputs accept voltages up to 5.5 V for compatibility with 5 V logic devices
• High-impedance outputs when either supply voltage is zero, supporting safe suspend modes

Applications

• Interfacing between 3 V and 5 V buses in mixed voltage supply environments
• Connecting low-voltage microcontrollers to 5 V peripheral devices
• Bidirectional data translation in high-performance digital systems

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature range. Confirm compliance with relevant JEDEC standards and ESD protection requirements for the target application environment. Ensure design accounts for the specified operating conditions and limiting values to maintain device reliability.

Selection Notes

Select this component when designing systems requiring bidirectional level shifting between distinct voltage domains. Consider the dual octal configuration which allows independent control of two 8-bit sections or use as a single 16-bit bus. Evaluate propagation delays against system timing constraints under expected supply voltage variations.

Part Context

This device belongs to the ALVC logic family, characterized by high performance and low power consumption. It utilizes Si-gate CMOS technology, offering superior speed compared to standard LVC families while maintaining compatibility with TTL input levels. The product is designed for robust operation across industrial temperature ranges.

Replacement Considerations

Check for equivalent 16-bit dual-supply translators from other manufacturers if sourcing constraints exist. Verify pinout compatibility and electrical specifications such as supply voltage ranges and propagation delays before substituting.