74HC244DB,112

Overview

The Nexperia 74HC244DB,112 is an octal buffer and line driver featuring three-state outputs. It operates within a supply voltage range of 2.0 V to 6.0 V and supports ambient temperatures from -40 °C to +125 °C. The device provides two independent output enable inputs (1OE and 2OE), each controlling four non-inverting outputs. It includes input clamp diodes for interfacing with voltages exceeding VCC and offers high noise immunity with latch-up performance exceeding 100 mA per JESD 78 Class II Level B.

Feature Summary

• Octal bus interface with dual independent control sections
• Non-inverting three-state outputs for bidirectional data transfer
• Input clamp diodes enabling direct connection to voltages above VCC

Applications

• Memory and memory mapping
• Clock drivers
• Bus-oriented transmissions

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product database to confirm package type and availability status. Confirm that the component meets all required environmental compliance standards for the target application before finalizing procurement decisions.

Selection Notes

Select this component when an octal buffer with three-state capability is required for bus-oriented applications. Ensure the system voltage falls within the 2.0 V to 6.0 V operating range and verify that the SO20 package dimensions fit the PCB layout constraints.

Part Context

This part belongs to the 74HC logic family, characterized by CMOS low power dissipation and high noise immunity. It is designed for general-purpose digital buffering and driving applications where signal integrity and isolation are critical in mixed-voltage environments.

Replacement Considerations

Check for updated package variants such as TSSOP20 or DHVQFN20 if space constraints require alternative footprints. Verify functional compatibility with other 74HC244 derivatives from different manufacturers.