74HC368D,653

Overview

The Nexperia 74HC368D,653 is a hex inverting buffer and line driver featuring three-state outputs controlled by active-low output enable inputs (nOE). It operates within a supply voltage range of 2.0 V to 6.0 V and utilizes CMOS technology for low power dissipation. The device incorporates input clamp diodes to facilitate interfacing with voltages exceeding VCC through current-limiting resistors. It is housed in an SO16 plastic small outline package (SOT109-1) and supports operating temperatures from -40 °C to +125 °C.

Feature Summary

• Provides six independent inverting buffers with high noise immunity and CMOS low power dissipation characteristics.
• Features three-state outputs that assume a high impedance OFF-state when the nOE input is HIGH.
• Includes input clamp diodes enabling direct interface to voltages higher than VCC using current limiting resistors.

Applications

• Bus-oriented communications systems requiring signal buffering and inversion.
• Clock distribution circuits utilizing three-state control for bus isolation.
• General-purpose digital logic applications compatible with JEDEC standards.

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the 74HC368 series includes both SO16 and TSSOP16 variants. Confirm temperature range specifications align with operational requirements, noting the standard range extends to +125 °C. Ensure compliance with RoHS directives and check for any recent product change notices affecting assembly or marking details before finalizing procurement.

Selection Notes

Select this component for designs requiring hex inverting buffers with controllable three-state outputs. The wide supply voltage range accommodates various logic families. Verify that the input voltage levels meet system requirements, as the HC variant uses CMOS levels. Consider the package dimensions and thermal derating characteristics if operating near maximum power dissipation limits.

Part Context

This part belongs to the Nexperia 74HC/HCT logic family, which offers high-speed CMOS performance. The 74HC368 specifically provides hex buffering with three-state capability. It is distinct from non-inverting buffers like the 74HC244 and complements other line drivers in the portfolio designed for bus applications.

Replacement Considerations

Direct functional equivalents include the 74HCT368D,653 for TTL-compatible input levels. Other manufacturers' parts must be verified against pinout, propagation delay, and output drive current specifications to ensure compatibility without circuit modification.