74ALVC164245GRDR

Overview

The SN74ALVC164245GRDR is a 16-bit (dual-octal) noninverting bus transceiver featuring two separate supply rails. The B port operates at VCCB of 3 V to 5.5 V, while the A port operates at VCCA of 2.3 V to 3.6 V. This configuration enables voltage translation between 2.5 V and 3.3 V environments, or between 3.3 V and 5 V environments. It supports asynchronous communication with a maximum propagation delay of 5.8 ns at 3.3 V and provides ±24 mA output drive capability.

Feature Summary

• Dual independent power rails allow flexible voltage translation between 2.5 V, 3.3 V, and 5 V logic levels.
• High-speed data transmission capabilities with low propagation delay for efficient asynchronous bus communication.
• Strong output drive performance delivering ±24 mA at 3.3 V operation.
• Control inputs referenced to VCCA ensure proper logic level interpretation across different supply voltages.

Applications

• Electronic points of sale systems
• Printers and other computer peripherals
• Motor drive control circuits
• Wireless and telecom infrastructure equipment
• Wearable health and fitness devices

Procurement Notes

Verify the GRDR suffix indicates the Microstar Junior BGA package variant. Confirm RoHS compliance status and check for specific manufacturing date codes if required for production timelines. Ensure ESD handling protocols are followed during assembly due to CMOS sensitivity.

Selection Notes

Select this component when interfacing buses with mixed 2.5 V, 3.3 V, and 5 V supplies. It is suitable for applications requiring bidirectional data transfer with high drive strength. Consider thermal management requirements based on the specific BGA package used in the design.

Part Context

This device belongs to Texas Instruments' Widebus family of level-shifting transceivers. It is designed for robust performance in mixed-voltage digital systems. The part integrates direction control and output enable functions to manage data flow between disparate voltage domains effectively.

Replacement Considerations

SN74ALVC164245DGGR

FAQ

How does the device handle power-up sequences?

To ensure a high-impedance state during power-up or power-down, the OE input should be tied to VCCA through a pullup resistor. Ground must be connected before any supply voltage is applied.

What is the function of the DIR input?

The DIR input determines the direction of data transmission. When active, it directs data from the A bus to the B bus or vice versa, depending on its logic level relative to the OE input.