HCF4051BM1

Analog Switches, Multiplexers, Demultiplexers Overview

The HCF4051BM1 is a single 8-channel analog multiplexer/demultiplexer fabricated in Metal Oxide Semiconductor technology. It features three binary control inputs (A, B, C) and an inhibit input to select one of eight independent channels. The device operates with a supply voltage range of 3 V to 20 V and supports analog signals up to 20 V peak-to-peak. Key electrical parameters include a typical ON resistance of 125 Ω at 15 V supply, channel leakage current of ±100 pA at 18 V, and propagation delay times ranging from 15 ns to 60 ns depending on conditions. It dissipates extremely low quiescent power, typically 0.2 μW at 10 V.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Digitally controlled analog switching with low ON impedance and very low OFF leakage current
• Built-in binary address decoding for selecting one of eight channels
• High degree of linearity with low sine wave distortion
• Inhibit input terminal disables all channels when logic high

Analog Switches, Multiplexers, Demultiplexers Applications

• Analog signal routing in data acquisition systems
• Multiplexing multiple sensor inputs to a single ADC
• Demultiplexing digital or analog signals to multiple outputs
• Audio and video signal switching applications

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the package type matches the design requirements, as the HCF4051B series includes both DIP and SOP variants. Confirm that the specific ordering code corresponds to the desired packaging format. Ensure compatibility with the system's operating temperature range and supply voltage specifications before finalizing procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for applications requiring bidirectional analog switching with minimal signal distortion. Consider the ON resistance variation across different supply voltages when designing for precision. Ensure the control logic levels are compatible with the specified VIH and VIL thresholds for reliable operation.

Analog Switches, Multiplexers, Demultiplexers Part Context

The HCF4051BM1 belongs to the HCF4051B series of CMOS analog switches manufactured by STMicroelectronics. It is part of the standard B-series CMOS devices compliant with JEDEC JESD13B specifications. The BM1 suffix specifically denotes the SOP (Small Outline Package) variant within this family.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Compatible pin-to-pin replacements include other HCF4051B variants such as HCF4051BEY (DIP package). Verify that substitute components meet the same DC and dynamic electrical specifications, particularly regarding ON resistance and leakage currents.