74HCT244PW,118

Overview

The Nexperia 74HCT244PW,118 is an octal buffer and line driver featuring three-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and accepts TTL-level inputs. The device provides two independent output enable controls (1OE and 2OE), each managing four outputs. It supports ambient temperatures from -40 °C to +125 °C and includes input clamp diodes for overvoltage tolerance.

Feature Summary

• Non-inverting octal bus interface with three-state outputs
• TTL-compatible input logic levels
• Dual output enable pins controlling separate four-bit groups
• High noise immunity and low CMOS power dissipation

Applications

• Octal bus interface systems
• Mixed voltage environment translation
• Memory and memory address buffering

Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm that the application voltage aligns with the HCT family specifications. Ensure thermal management meets the derating requirements for the TSSOP20 package at maximum operating temperatures.

Selection Notes

Select this component when TTL-to-CMOS level shifting is required for eight-channel data paths. The dual enable structure allows flexible partitioning of the bus. Verify that the load capacitance remains within limits to maintain signal integrity across the specified temperature range.

Part Context

This part belongs to the 74HCT series, designed for high-speed CMOS operation with TTL-compatible inputs. It serves as a standard solution for expanding digital buses in industrial and consumer electronics where reliable signal buffering is necessary.

Replacement Considerations

Cross-reference with other manufacturers' 74HCT244 equivalents. Verify pin compatibility and electrical characteristics match the original design requirements before substitution.