MC74LVX4051MELG

Overview

The MC74LVX4051MELG 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 full supply range from VCC to VEE. Key electrical characteristics include a maximum ON resistance of 86 Ω at 3.0 V, propagation delays up to 40 ns, and a bandwidth of 80 MHz. It is housed in a 16-pin SOEIAJ 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
• Process control instrumentation
• Communication equipment signal gating

Procurement Notes

Verify the specific ordering suffix ELG corresponds to the SOEIAJ-16 package and tape-and-reel quantity of 2000 units as documented in the official datasheet. Confirm RoHS compliance status and ensure the component meets the required operating temperature range of -55°C to +125°C for your specific application environment.

Selection Notes

Select this component when an 8-channel analog switch is required with low ON resistance and high linearity. Ensure the system voltage falls within the 2.5 V to 6.0 V digital supply range. Consider the SOEIAJ-16 package dimensions if board space is constrained, and verify that the 80 MHz bandwidth meets the signal frequency requirements.

Part Context

This part belongs to the MC74LVX4051 series of analog multiplexers. It shares pinout compatibility with HC4051A and metal-gate MC14051B devices but offers superior performance metrics due to its silicon-gate CMOS construction. The M suffix indicates the SOEIAJ-16 package type, while ELG denotes the specific reel packaging configuration.

Replacement Considerations

Direct pin-compatible replacements include the MC74HC4051 and MC14051B, though these may exhibit higher ON resistance and different linearity characteristics. For equivalent performance, consider other LVX series variants such as the MC74LVXT4051, ensuring package and electrical specifications match the design requirements.

FAQ

What is the maximum analog voltage swing supported by the MC74LVX4051MELG?

The analog inputs/outputs can swing between the positive supply voltage (VCC) and the negative supply voltage (VEE), provided the difference between VCC and VEE does not exceed 6.0 V.

How does the device handle unused analog channels?

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

Is the MC74LVX4051MELG suitable for level translation applications?

Yes, the Channel-Select and Enable inputs are overvoltage tolerant (OVT), allowing for level translation from 6.0 V down to 3.0 V logic levels.