74ALVC164245DGG,51

Overview

The Nexperia 74ALVC164245DGG,51 is a 16-bit dual supply translating transceiver with 3-state outputs. It operates in mixed 3 V and 5 V environments, featuring a 3 V port (VCC(A)) range of 1.5 V to 3.6 V and a 5 V port (VCC(B)) range of 1.5 V to 5.5 V. The device provides non-inverting data flow between ports A and B, controlled by direction inputs (1DIR, 2DIR) and output enable inputs (1OE, 2OE). It supports partial power-down via I_OFF circuitry and offers high-impedance outputs when either supply voltage is zero.

Feature Summary

• Dual supply architecture enabling direct interface between 3 V and 5 V buses
• Overvoltage tolerant inputs accepting voltages up to 5.5 V
• I_OFF circuitry prevents backflow current during partial power-down
• High-impedance outputs when VCC(A) or VCC(B) equals 0 V

Applications

• Interfacing 3 V and 5 V buses in mixed supply environments
• Connecting 3 V microcontrollers to 5 V peripherals
• Bidirectional data translation for system buses

Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm that the component meets the intended environmental temperature specifications. Ensure the application design accounts for the recommended operating conditions regarding supply voltage relationships. Check for any automotive qualification requirements if used in vehicle electronics.

Selection Notes

Select this component for applications requiring bidirectional level shifting between distinct voltage domains. The dual octal configuration allows use as two 8-bit transceivers or one 16-bit unit. Consider the low power consumption and CMOS technology for efficiency. Verify input voltage compatibility with connected logic families.

Part Context

This device belongs to the Nexperia ALVC logic family, designed for high-performance, low-voltage CMOS applications. It serves as a bridge between different logic levels, specifically targeting systems where 3 V and 5 V supplies coexist. The TSSOP48 package provides a compact solution for dense PCB layouts.

Replacement Considerations

Check for equivalent 16-bit dual-supply translators from other manufacturers. Ensure pinout compatibility and electrical characteristics match the original design requirements.