HEF4028BP,652

Overview

The HEF4028BP,652 is a BCD to decimal decoder manufactured by NXP Semiconductors. It converts four-bit binary-coded decimal inputs (A0-A3) into one of ten active HIGH outputs (Y0-Y9). The device operates on a supply voltage range of 3.0 V to 15.0 V and supports ambient temperatures from -40 °C to +85 °C. Propagation delays vary with load capacitance; for example, at 5 V, tPHL ranges from 73 ns to 200 ns with a 50 pF load. Static characteristics include high-level output voltages near VDD and low-level output voltages near VSS.

Feature Summary

• Converts 4-bit BCD codes to single active HIGH decimal outputs
• Operates within a wide supply voltage range of 3.0 V to 15.0 V
• Includes input clamp diodes for interfacing with voltages exceeding VDD
• Provides ESD protection exceeding 2000 V via HBM and 1000 V via CDM

Applications

• BCD to decimal decoding in digital logic circuits
• Octal decoding using three address bits with an enable function
• Demultiplexing applications utilizing address and data inputs

Procurement Notes

Verify the package type matches the required form factor, as the datasheet specifies SO16 (SOT109-1) for the HEF4028B series. Confirm that the ordering suffix corresponds to the specific tape and reel or tube configuration intended for the assembly process. Ensure the component meets the required temperature range specifications for the target operating environment.

Selection Notes

Select this component when a direct BCD to decimal conversion is required without additional gating logic. Consider the propagation delay formulas provided in the dynamic characteristics section to ensure timing requirements are met under specific load conditions. Verify that the input voltage levels remain within the recommended operating conditions relative to the chosen supply voltage.

Part Context

This part belongs to the HEF4028B family of CMOS logic devices produced by Nexperia. The family focuses on standard logic functions compatible with various industrial and commercial applications. The device utilizes complementary metal-oxide semiconductor technology to achieve low power dissipation while maintaining high noise immunity across the specified voltage range.

Replacement Considerations

HEF4028BT is available in the same SO16 package with identical electrical characteristics. Cross-reference with other BCD to decimal decoders from different manufacturers if pinout compatibility or specific package styles differ from the SO16 format.