HEF4555BT,653

Overview

The HEF4555BT,653 is a dual 1-of-4 decoder/demultiplexer from the Nexperia HEF logic family. It contains two independent decoders, each featuring two address inputs (nA0, nA1), an active LOW enable input (nE), and four mutually exclusive active HIGH outputs (nY0 to nY3). The device operates on a supply voltage range of 3 V to 15 V referenced to VSS. It utilizes CMOS technology for low power dissipation and high noise immunity. The component is specified for ambient temperatures between -40 °C and +85 °C and complies with JEDEC standard JESD 13-B.

Feature Summary

• Contains two independent 1-of-4 decoders or demultiplexers within a single package
• Features fully static operation with standardized symmetrical output characteristics
• Provides ESD protection exceeding 2000 V via Human Body Model and 1000 V via Charged Device Model
• Operates over a wide supply voltage range from 3.0 V to 15.0 V

Applications

• Code conversion
• Address decoding
• Demultiplexing using the enable input as data input

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct package type and temperature rating. Confirm that the required parametric ratings align with the intended operating voltage conditions. Check for any recent revision history updates that may affect pinning or functional descriptions before finalizing procurement specifications.

Selection Notes

Select this component when a design requires multiple independent decoding functions in a compact surface-mount form factor. Ensure the application environment remains within the specified -40 °C to +85 °C temperature range. Verify that the load capacitance requirements are compatible with the dynamic propagation delay characteristics at the chosen supply voltage level.

Part Context

This part belongs to the HEF4555B series, which represents standard CMOS logic devices manufactured by Nexperia. The 'BT' designation indicates the SO16 plastic small outline package variant with a body width of 3.9 mm. This series is designed for general-purpose digital logic applications requiring reliable decoding capabilities across a broad voltage spectrum.

Replacement Considerations

Direct substitutes include other HEF4555B variants from different manufacturers that adhere to the same JEDEC standards. Verify pin compatibility and electrical characteristics before substitution. Cross-reference with equivalent parts from the HEF4000B family if functional overlap exists.