MC14551BCPG

Analog Switches, Multiplexers, Demultiplexers Overview

The MC14551BCPG is a digitally controlled analog switch implementing four single-pole double-throw (SPDT) solid-state switches. It operates on a single supply voltage ranging from 3.0 V to 18 V, with an analog signal range matching the supply span. The device features low ON resistance up to 800 Ω and very low OFF leakage current of ±100 nA. It includes triple diode protection on all control inputs and provides linearized transfer characteristics with low noise performance.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Implements four independent SPDT analog switches within a single package
• Features built-in level conversion allowing direct digital control of analog signals
• Includes triple diode protection on all control input pins
• Provides break-before-make switching function to prevent signal shorting

Analog Switches, Multiplexers, Demultiplexers Applications

• Signal routing in data acquisition systems
• Multiplexing sensor inputs for microcontroller interfaces
• Audio signal path switching
• Test and measurement equipment signal selection

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status and check for specific ordering suffixes that may indicate package variations. Review datasheet revision history for any parameter updates before finalizing procurement specifications.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when four independent SPDT analog switches are required with CMOS logic compatibility. Ensure the application voltage does not exceed the 18 V maximum rating. Consider the 280 Ω typical ON resistance at 10 V supply for signal integrity requirements. Verify that the 16-pin PDIP package fits the target PCB layout constraints.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MC14551B family of quad analog multiplexer/demultiplexer devices manufactured by onsemi. It serves as a solid-state alternative to mechanical relays for signal routing applications. The device is designed for general-purpose analog switching where low distortion and high isolation are necessary.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct pin-compatible replacements include other variants within the MC14551B series such as MC14551BDG (SOIC-16). For lower ON resistance requirements, HC4051, HC4052, or HC4053 devices are suggested alternatives, though they lack the integrated level converter.