MC14556BFELG

Overview

The MC14556BFELG 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 that go to the low state upon selection. The device operates within a supply voltage range of 3.0 Vdc to 18 Vdc and supports ambient temperatures from -55°C to +125°C. It includes diode protection on all inputs and can drive two low-power TTL loads or one low-power Schottky TTL load.

Feature Summary

• Dual independent 1-of-4 decoding channels with active low outputs
• Input diode protection for high static voltage safeguarding
• Expandable architecture for multi-stage decoding applications
• Buffered outputs capable of driving standard TTL logic loads

Applications

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

Procurement Notes

Verify the specific BFELG suffix indicates the SOEIAJ-16 package configuration. Confirm RoHS compliance status as indicated by the G suffix in ordering information. Ensure ESD precautions are maintained due to high-impedance CMOS inputs. Unused inputs must be tied to appropriate logic levels during operation.

Selection Notes

Select this component when dual independent 1-of-4 decoding is required within a single package. Choose the MC14556B variant specifically for active low output requirements, distinguishing it from the MC14555B which provides active high outputs. Verify compatibility with the target system's voltage range between 3V and 18V.

Part Context

This part belongs to the MC1455xB series of CMOS logic devices manufactured by onsemi. It is functionally paired with the MC14555B, differing primarily in output polarity. The series is designed for general-purpose decoding and demultiplexing tasks in industrial and commercial digital electronics.

Replacement Considerations

MC14555BFELG serves as the functional equivalent with inverted output polarity. Cross-reference other manufacturers' HC/HCT or AC/ACT series decoders if pin-compatible alternatives are needed, ensuring voltage and speed specifications match the application requirements.