MC14555BFELG

Overview

The MC14555BFELG 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 device supports a supply voltage range of 3.0 Vdc to 18 Vdc and operates within an ambient temperature range of -55°C to +125°C. It includes diode protection on all inputs and is capable of driving two Low-Power TTL loads or one Low-Power Schottky TTL load over the rated temperature range.

Feature Summary

• Dual-channel architecture providing independent decoding functions
• Input protection against high static voltages via diodes
• Expandable design for complex decoding applications
• Buffered outputs compatible with standard logic families

Applications

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

Procurement Notes

Verify the specific package suffix 'FEL' corresponds to the SOEIAJ-16 tape and reel configuration as listed in the ordering information. Confirm that the 'G' suffix indicates a lead-free package compliant with manufacturer standards. Ensure the component matches the MC14555B functional specification rather than the MC14556B variant which features inverted outputs.

Selection Notes

Select this component when a dual-channel 1-of-4 decoding solution is required within a compact surface-mount footprint. The wide supply voltage range allows flexibility in system power design. Consider the propagation delay characteristics relative to the clock frequency requirements of the target application to ensure signal integrity across the operating temperature range.

Part Context

This part belongs to the MC14555B/MC14556B series of CMOS decoders. The MC14555B provides active-high outputs while the MC14556B provides active-low outputs. Both share identical pinouts and internal structures but differ in output polarity. The series is designed for general-purpose digital logic applications requiring reliable decoding performance.

Replacement Considerations

Direct replacements include the MC14556BFELG if active-low outputs are acceptable. Other variants such as MC14555BDG or MC14555BDR2G offer the same functionality in different packages like SOIC-16.