74LV245D,112

Overview

The Nexperia 74LV245D,112 is an octal bus transceiver with 3-state outputs housed in a SO20 plastic small outline package (SOT163-1). It operates within a supply voltage range of 1.0 V to 5.5 V and supports temperatures from -40 °C to +125 °C. The device features direction control via DIR and output enable via OE. Propagation delay ranges from 7 ns to 34 ns depending on voltage. Input leakage current is 1.0 μA maximum at 5.5 V. Supply current is 160 μA maximum.

Feature Summary

• Provides bi-directional data transfer between two 8-bit buses using direction control inputs.
• Features 3-state outputs that assume a high-impedance OFF-state when the output enable input is HIGH.
• Includes input clamp diodes allowing interface to voltages exceeding VCC using current limiting resistors.

Applications

• Memory bus architectures requiring bi-directional data flow
• Industrial control systems operating across wide temperature ranges
• Telecommunications infrastructure utilizing mixed voltage levels

Procurement Notes

Verify the specific ordering suffix 112 corresponds to the SO20 package variant SOT163-1. Confirm the required temperature grade matches the -40 °C to +125 °C specification. Ensure design compatibility with the 1.0 V to 5.5 V supply voltage limits. Check for any recent product change notices affecting pinout or electrical characteristics before finalizing procurement.

Selection Notes

Select this component for designs requiring robust bi-directional data transmission across varying voltage domains. The CMOS technology ensures low power dissipation suitable for battery-operated or energy-efficient applications. Verify that the package dimensions align with the PCB layout constraints for the SO20 form factor.

Part Context

This part belongs to the 74LV logic family, characterized by low-voltage operation and compatibility with standard logic interfaces. It serves as a core interconnect solution for managing data flow in complex digital circuits where signal integrity and voltage translation are critical requirements.

Replacement Considerations

Consider the 74LV245PW for identical functionality in a TSSOP20 package. Evaluate other 74LV245 variants if different package styles are required while maintaining the same electrical specifications.

FAQ

How does the device handle input voltages higher than VCC?

The inputs include clamp diodes, which allow the use of current limiting resistors to interface inputs to voltages exceeding VCC without damaging the device.

What determines the direction of data flow?

The direction is controlled by the DIR input. A LOW level on DIR causes An to equal Bn, while a HIGH level causes Bn to equal An.