74HCT4351D/C4118

Analog Switches, Multiplexers, Demultiplexers Overview

The 74HCT4351D/C4118 is a single-pole octal-throw analog switch manufactured by Nexperia, suitable for analog or digital 8:1 multiplexer/demultiplexer applications. It features three digital select inputs (S0 to S2), eight independent inputs/outputs (Yn), a common input/output (Z), and two digital enable inputs (E1 and E2). The device operates with a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a maximum on-resistance of 180 ohms, a maximum propagation delay of 75 ns, and a maximum off-time of 65 ns. It supports an operating temperature range from -40 °C to +125 °C and is housed in a SOIC-20 package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Provides 8:1 multiplexing capability with latched address inputs for stable signal routing.
• Features wide analog input voltage range allowing logic level translation between 5 V logic and ±5 V analog signals.
• Includes built-in 'break before make' switching action to prevent signal shorting during channel transitions.

Analog Switches, Multiplexers, Demultiplexers Applications

• Analog multiplexing and demultiplexing systems
• Digital multiplexing and demultiplexing circuits
• Signal gating applications

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the exact suffix C4118 against official Nexperia documentation to confirm packaging and tape-and-reel specifications. Ensure the component matches the standard 74HCT4351D functional description. Confirm RoHS compliance status through the manufacturer's latest product change notification. Validate that the SOIC-20 package dimensions align with your PCB footprint requirements.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when an 8-channel analog switch with HCT logic compatibility is required. It is appropriate for designs needing operation up to 125 °C junction temperature. Consider the 180 ohm on-resistance limit for signal integrity in high-impedance paths. Verify that the 4.5 V to 5.5 V supply range fits the system power architecture.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the 74HCT series of CMOS logic devices, which are compatible with TTL logic levels. The 74HCT4351 is functionally similar to the 74HC4351 but optimized for 5 V operation with faster switching characteristics compared to older 74HC variants. It serves as a core building block for data acquisition systems requiring multiple analog channels.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The 74HCT4051D is a related 8:1 analog switch but uses a 16-pin SOIC package instead of 20-pin. Direct pin-to-pin replacement is not possible due to the different package count. Verify if the application can accommodate the pinout differences or requires a specific 20-pin form factor.