MC14556BFEL

Overview

The MC14556BFEL is a dual binary to 1-of-4 decoder/demultiplexer constructed with complementary MOS (CMOS) enhancement mode devices. It features two select inputs, an active low enable input, and four mutually exclusive outputs per channel. The MC14556B variant provides active low outputs. Supply voltage ranges from 3.0 Vdc to 18 Vdc. Propagation delay from select inputs to output is typically 70 ns at 15 V. Quiescent current is typically 20 µA at 15 V.

Feature Summary

• Diode protection on all inputs
• Expandable for larger decoding functions
• Capable of driving TTL loads

Applications

• Address decoding
• Memory selection control
• Code conversion
• Demultiplexing in digital data transmission systems

Procurement Notes

Verify the specific suffix 'FEL' corresponds to the SOEIAJ-16 package and tape & reel shipping configuration as listed in the ordering information. Confirm RoHS compliance status by checking for the 'G' suffix if lead-free material is required, as standard parts may not be Pb-Free.

Selection Notes

Select the MC14556BFEL when active low decoded outputs are required. Use the MC14555BFEL if active high outputs are needed. Ensure the application operates within the 3.0 V to 18 V supply range and requires dual independent 1-of-4 decoding channels.

Part Context

This component belongs to the MC1455xB series of CMOS logic devices. It serves as a dual-channel version of the single-channel MC14555B/MC14556B decoders. The family supports expanded decoding configurations such as binary-to-hexadecimal using multiple units.

Replacement Considerations

MC14555BFEL is the functional equivalent with active high outputs.