74HCT244DB,118

Overview

The Nexperia 74HCT244DB,118 is an octal buffer and line driver featuring 3-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and accepts TTL input levels. The device provides two independent output enable controls (1OE and 2OE), each managing four outputs. It utilizes the SO20 plastic small outline package (SOT163-1) with a body width of 7.5 mm. The component supports an ambient operating temperature from -40 °C to +125 °C.

Feature Summary

• Octal bus interface with non-inverting 3-state outputs
• TTL input levels for compatibility with standard logic families
• Dual output enables allowing independent control of output groups

Applications

• Bus-oriented transmissions
• Clock driving
• Buffering memory and data registers

Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm that the intended application environment falls within the specified temperature and voltage limits. Ensure design compliance with ESD protection standards and latch-up performance requirements outlined in the official datasheet before finalizing procurement.

Selection Notes

Select this component when an 8-bit buffer with 3-state capability is required for TTL-level interfaces. The dual enable structure allows flexible partitioning into two 4-bit buffers. Verify that the SO20 package dimensions fit the target PCB layout constraints and thermal dissipation requirements.

Part Context

This part belongs to the 74HCT series of high-speed CMOS logic devices manufactured by Nexperia. It is functionally compatible with other industry-standard octal buffers but offers specific electrical characteristics defined by the HCT logic family. The device is designed for general-purpose digital applications requiring signal buffering and isolation.

Replacement Considerations

Direct replacements include the 74HCT244D,118 or 74HCT244PW,118 from Nexperia, provided the package type matches the design requirements. Cross-manufacturer equivalents must be verified against pinout, voltage, and timing specifications.