MC74LVX4051DT

Overview

The MC74LVX4051DT is an analog multiplexer/demultiplexer manufactured by onsemi, utilizing high-performance silicon-gate CMOS technology. It features a single-pole eight-throw (SP8T) configuration with three digital channel-select inputs and an active-high enable input. The device operates within a digital power supply range of 2.5 V to 6.0 V and supports analog signals across the complete supply range from VCC to VEE. Key electrical parameters include a maximum propagation delay of 40 ns at 2.5 V, a maximum ON resistance of 86 Ω at 3.0 V, and a bandwidth of 80 MHz. It is housed in a TSSOP-16 package.

Feature Summary

• Utilizes silicon-gate CMOS technology for fast switching speeds and low leakage currents.
• Features improved linearity and lower ON resistance compared to metal-gate or High-Speed CMOS counterparts.
• Includes break-before-make circuitry to prevent signal shorting during channel transitions.
• Provides overvoltage tolerance on control inputs for level translation between 6.0 V and 3.0 V logic levels.

Applications

• Signal routing in data acquisition systems
• Audio and video signal switching
• Instrumentation and test equipment multiplexing

Procurement Notes

Verify the specific ordering suffix DT corresponds to the TSSOP-16 package when sourcing components. Confirm RoHS compliance status as required by project specifications. Ensure that the supply voltage limits are strictly adhered to during operation to maintain device reliability and prevent damage to the internal CMOS structures.

Selection Notes

Select this component when a single 8-channel analog switch is required with low distortion and high isolation. The LVX series offers better linearity than standard HC or HCT families. Consider the TSSOP-16 package constraints regarding thermal dissipation and board space. Verify that the control logic voltage levels are compatible with the 2.5 V to 6.0 V operating range.

Part Context

This device belongs to the MC74LVX4051 family of analog multiplexers. It shares pinout compatibility with devices such as the LVX8051, HC4051A, and MC14051B. The DT suffix specifically denotes the Thin Shrink Small Outline Package (TSSOP) with 16 leads, distinguishing it from SOIC or SOEIAJ variants within the same functional family.

Replacement Considerations

MC74LVX4051D

FAQ

What is the function of the Enable pin?

When the Enable pin is HIGH, all analog switches are turned off, placing the outputs in a high-impedance state regardless of the channel-select inputs.

Can the device operate with split supplies?

Yes, the device can be designed to operate using split supplies up to ±3.0 V, provided the difference between VCC and VEE remains within the 2.5 V to 6.0 V range.

How does the device handle unused channels?

Unused analog inputs/outputs may be left floating, but tying them to VCC or GND through a low-value resistor helps minimize crosstalk and feedthrough noise.