MC74HC4051ADT

Analog Switches, Multiplexers, Demultiplexers Overview

The MC74HC4051ADT is a single 8-channel analog multiplexer/demultiplexer fabricated with silicon-gate CMOS technology. It operates within an analog supply range of 2.0 V to 12.0 V and a digital control range of 2.0 V to 6.0 V. The device features a maximum ON resistance of 190 Ω at 4.5 V and 280 Ω at -55°C, with a channel-to-channel matching of 30 Ω. Propagation delays reach 270 ns at 2.0 V and 45 ns at 6.0 V. It utilizes a 16-pin TSSOP package (CASE 948F) and supports an operating temperature range from -55°C to +125°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Utilizes silicon-gate CMOS technology for fast switching speeds and low power consumption.
• Provides improved linearity and lower ON resistance compared to metal-gate CMOS counterparts.
• Includes diode protection on all inputs and outputs to guard against static discharge.
• Features built-in level shifting to allow analog signal ranges up to ±6 V with 0 to 6 V digital control.

Analog Switches, Multiplexers, Demultiplexers Applications

• Signal routing in data acquisition systems
• Audio and video signal switching
• Test and measurement equipment

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'DT' corresponds to the TSSOP-16 package (CASE 948F) as listed in the ordering information. Confirm RoHS compliance status, as older manufacturing runs may differ from current specifications. Check for any Product Change Notices (PCN) regarding assembly or material updates that might affect long-term availability or pin compatibility.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when an 8-channel analog switch is required with high-speed performance and wide voltage flexibility. Ensure the application voltage does not exceed the 12.0 V total supply limit. Consider the 190 Ω ON resistance at lower voltages if signal integrity is critical. Verify that the TSSOP-16 footprint matches the PCB design constraints.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MC74HC405xA family, which includes the MC74HC4052A (4-channel, dual-pole) and MC74HC4053A (2-channel, triple single-pole). All devices share similar silicon-gate CMOS characteristics and pinout compatibility with older metal-gate series like the MC14051AB. The 'ADT' designation specifically identifies the TSSOP-16 surface-mount variant.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

MC74HC4051ADTR2G is a tape-and-reel version of the same device. MC74HC4051ADR2G offers the SOIC-16 package equivalent. Cross-vendor equivalents such as the NXP 74HC4051 are functionally compatible but require verification of electrical parameters against the original datasheet requirements.