HEF4514BT,652

Overview

The HEF4514BT,652 is a 1-of-16 decoder/demultiplexer with input latches from the HEF4000B logic family. It features four binary weighted address inputs (A0 to A3), a latch enable input (EL), and an active LOW enable input (E). The device provides 16 mutually exclusive active HIGH outputs (O0 to O15). When EL is HIGH, the selected output is determined by data on An; when EL goes LOW, the last data are stored in the latches. With E LOW, the selected output is HIGH; at E HIGH, all outputs are LOW. The SO package contains 24 pins.

Feature Summary

• Provides 1-of-16 decoding or demultiplexing functionality with four binary weighted address inputs.
• Includes input latching capability controlled by a dedicated latch enable signal to maintain stable outputs.
• Features an active LOW enable input that selects between decoded outputs and low states without affecting latch content.

Applications

• Digital multiplexing
• Address decoding
• Hexadecimal/BCD decoding

Procurement Notes

Verify the component matches the Philips Semiconductors product specification for the HEF4514B MSI decoder/demultiplexer. Confirm the package designation corresponds to the 24-lead plastic SO variant. Ensure compatibility with the HEF, HEC LOCMOS HE4000B Logic Family Specifications regarding electrical limits and operating conditions.

Selection Notes

Select this component for applications requiring 1-of-16 decoding with input storage capabilities. It is suitable for systems needing stable outputs during address changes via the latch function. Consider the AC characteristics and propagation delays relative to the system clock speed and load capacitance requirements.

Part Context

The HEF4514B belongs to the HEF4000B logic family, which utilizes LOCMOS technology. This family includes various logic functions designed for general-purpose digital applications. The HEF4514BT specifically addresses the need for decoders with latched inputs within this standard series.

Replacement Considerations

Consult the IC04 LOCMOS HE4000B Logic Family Specifications for compatible alternatives within the same family. Verify pinout and functional equivalence before substituting with other decoder/demultiplexer parts.