HEF40374BT,653

Overview

The HEF40374BT,653 is a D-Type Edge Triggered Flip-Flop from the NXP HEF4000 logic series. It integrates eight independent flip-flops within a single integrated circuit housed in a 20-pin Small Outline Package (SOP). The device features three-state outputs for bus-oriented applications and operates on a single-ended input configuration with non-inverting polarity. Electrical specifications include a propagation delay of 40 ns at 15 V, with high-level output current of -19.8 mA and low-level output current of 30 mA. It supports a supply voltage range from 4.5 V to 15.5 V and functions reliably across an operating temperature range of -40 °C to +85 °C.

Feature Summary

• Integrates eight D-type edge-triggered flip-flops into a single unit
• Provides three-state outputs suitable for bus-driven systems
• Operates with single-ended inputs and non-inverting signal polarity

Applications

• Digital data storage and register circuits
• Shift register configurations
• Bus-oriented interface systems requiring tri-state control

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package type matches SOP-20 requirements. Ensure supply voltage parameters align with system design limits. Check RoHS compliance status for environmental regulations. Validate operating temperature range against application environment constraints.

Selection Notes

Select this component when eight synchronized storage elements are required in a compact form factor. Consider the three-state capability if multiple devices share a common data bus. Evaluate power consumption relative to the 15.5 V maximum limit. Assess thermal performance within the specified -40 °C to +85 °C range for industrial or commercial environments.

Part Context

This part belongs to the HEF4000 series of CMOS logic devices manufactured by NXP Semiconductors. The series provides standard logic functions compatible with various digital system architectures. The specific model offers high-density integration compared to discrete flip-flop solutions, reducing board space requirements while maintaining reliable edge-triggered operation characteristics.

Replacement Considerations

HEF40374BP,652