MC74LVXT8051M

Overview

The MC74LVXT8051M is an analog multiplexer/demultiplexer manufactured by onsemi in the SOEIAJ-16 package. It operates within a power supply range of 2.0 V to 6.0 V and supports an operating temperature from -55°C to +85°C. The device features a single-pole, eight-position plus common off configuration with a maximum ON resistance of 40 Ohms at 3.0 V. Propagation delays are specified at 30 ns for channel-select transitions and 4.0 ns for analog input-to-output paths at 2.0 V. The bandwidth reaches 80 MHz, while quiescent current remains low at 4 µA.

Feature Summary

• Utilizes high-performance silicon-gate CMOS technology for fast switching speeds and low leakage currents.
• Provides improved linearity and lower ON resistance compared to metal-gate CMOS counterparts.
• Features diode protection on all inputs and outputs to allow overvoltage tolerance up to 7.0 V regardless of supply voltage.

Applications

• Logic level translation between 3.0 V CMOS logic and 5.0 V CMOS Logic.
• Interfacing 5.0 V circuits to 3.0 V circuits.
• Translating from 1.8 V CMOS logic to 3.0 V CMOS Logic.

Procurement Notes

Verify the specific ordering suffix 'M' corresponds to the SOEIAJ-16 package when sourcing this component. Confirm that the procurement documentation explicitly lists the MC74LVXT8051M part number to ensure correct physical dimensions and pinout compatibility. Cross-reference the manufacturer's official ordering guide to validate the shipping unit quantity associated with this specific package style.

Selection Notes

Select the MC74LVXT8051M when an 8-channel analog switch is required in a compact surface-mount form factor. This model is suitable for applications demanding low ON resistance and high linearity across a wide analog signal range. Ensure the design accommodates the SOEIAJ-16 footprint and meets the thermal dissipation requirements for the chosen operating environment.

Part Context

This component belongs to the LVXT series of analog switches designed for low-voltage digital control of analog signals. It serves as a functional replacement for older metal-gate devices like the MC14051B, offering superior performance characteristics. The device maintains pinout compatibility with high-speed HC4051A variants, facilitating direct upgrades in existing circuit designs requiring enhanced speed and lower power consumption.

Replacement Considerations

MC74LVXT8051D

FAQ

What is the maximum voltage tolerance for the inputs?

The device provides protection allowing voltages up to 7.0 V to be applied to the inputs, regardless of the supply voltage.

How does the ON resistance vary with input voltage?

The ON resistance is more linear over the input voltage range compared to metal-gate CMOS analog switches, ensuring consistent signal transmission.

Can this device interface different logic families?

Yes, it can interface 5.0 V circuits to 3.0 V circuits or translate from 1.8 V CMOS logic to 3.0 V CMOS logic while operating at the higher-voltage power supply.