74HC244D,652

Overview

The Nexperia 74HC244D,652 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 non-inverting logic with two independent output enable inputs (1OE and 2OE). Propagation delay ranges from 9 ns to 33 ns depending on voltage. Input levels are CMOS compatible.

Feature Summary

• Octal bus interface with dual independent control sections
• Three-state outputs for efficient bus management
• High noise immunity and low power dissipation
• ESD protection exceeding 2000 V HBM and 1000 V CDM

Applications

• Memory module address and data buffering
• Clock drivers and buffered oscillators
• Bus-oriented communications systems

Procurement Notes

Verify the specific suffix '652' against current Nexperia documentation to confirm package type SOT163-1 (SO20) and temperature grade. Confirm availability status as distributors may list obsolete or limited stock items. Ensure design compliance with JEDEC standards JESD8C and JESD7A before finalizing procurement.

Selection Notes

Select this component when an eight-channel buffer with high-impedance states is required. The wide supply voltage range allows operation in both 3.3 V and 5 V environments. Verify that input voltage requirements match the CMOS level specifications for the HC series rather than TTL levels found in the HCT variant.

Part Context

This part belongs to the 74HC family of high-speed CMOS logic devices manufactured by Nexperia. It serves as a standard octal buffer solution for digital signal routing. The D package designation indicates a plastic small outline package with twenty leads, suitable for surface-mount assembly techniques in compact electronic designs.

Replacement Considerations

The 74HCT244D,652 offers identical pinout and functionality but requires a 4.5 V to 5.5 V supply with TTL-compatible input thresholds.