74HC244DB,112

Overview

The 74HC244DB,112 is an octal buffer and line driver manufactured by Nexperia. It features eight non-inverting outputs with three-state capability controlled by two separate output enable inputs (1OE and 2OE). The device operates within a supply voltage range of 2.0 V to 6.0 V and complies with JEDEC standards JESD8C and JESD7A. It utilizes CMOS technology for low power dissipation and includes input clamp diodes to facilitate interfacing with voltages exceeding VCC. The component is housed in a 20-lead plastic small outline package (SO20) designated as SOT163-1.

Feature Summary

• Octal bus interface architecture supporting two independent four-bit buffers or one unified eight-bit buffer configuration
• Three-state output functionality allowing high-impedance OFF-states when output enables are inactive
• CMOS construction providing low power dissipation alongside high noise immunity characteristics

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented transmissions

Procurement Notes

Verify the specific ordering code suffix against current Nexperia documentation to confirm package type and temperature range specifications. Ensure that the procurement channel sources products directly from authorized distributors to guarantee authenticity and traceability. Confirm compliance with RoHS directives and check for any recent revisions to the product data sheet prior to finalizing design integration.

Selection Notes

Select this component when designing systems requiring isolated buffering for multiple data lines or clock signals. The dual output enable structure allows flexible partitioning of the bus into smaller segments. Verify that the operating voltage aligns with the 2.0 V to 6.0 V specification and ensure that load capacitance requirements remain within the dynamic characteristic limits defined in the datasheet.

Part Context

This part belongs to the 74HC/HCT logic family, which represents standard CMOS digital logic components widely used in general-purpose electronic circuits. The 'HC' designation indicates High-speed CMOS technology, offering performance improvements over older logic families while maintaining compatibility with TTL input levels at specific supply voltages. The 'DB' suffix specifically identifies the SO20 surface-mount package variant.

Replacement Considerations

Direct functional equivalents include the 74HCT244 variants for TTL-compatible applications. Other manufacturers produce pin-compatible octal buffers such as the SN74HC244 series. Verify electrical parameters and package dimensions before substituting to ensure mechanical fit and signal integrity.