MC74LVX4051DR2

Overview

The MC74LVX4051DR2 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 pin. The device operates within a digital power supply range of 2.5 V to 6.0 V and supports analog signals across a split supply range of ±3.0 V. 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 SOIC-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, enabling level translation from 6.0 V down to 3.0 V.

Applications

• Signal routing in data acquisition systems requiring analog voltage selection.
• Level translation interfaces between 3 V logic controllers and ±3 V analog signal sources.
• Multiplexing multiple sensor inputs into a single analog-to-digital converter path.

Procurement Notes

Verify the specific ordering suffix DR2 corresponds to the SOIC-16 tape and reel packaging format containing 2500 units per reel. Confirm that the component meets RoHS compliance standards as indicated by the manufacturer's Pb-Free strategy documentation. Ensure the procurement source provides valid traceability for the assembly location and wafer lot codes printed on the device marking.

Selection Notes

Select this component when a low ON resistance and high linearity are required for analog signal paths operating between 2.5 V and 6.0 V. It is suitable for applications needing break-before-make timing to avoid cross-conduction. Consider the SOIC-16 package dimensions and thermal resistance values if heat dissipation is a constraint in the design environment.

Part Context

This part belongs to the MC74LVX4051 series of analog multiplexers. It shares pinout compatibility with devices such as the LVX8051, HC4051A, and metal-gate MC14051B. The DR2 suffix specifically denotes the SOIC-16 package variant supplied in tape and reel format, distinguishing it from rail-packaged versions like the D or DG suffixes.

Replacement Considerations

Direct functional substitutes include the MC74LVX4051DG for rail-packaged equivalents. Other manufacturers offer compatible parts such as the SN74LV4051ADR from Texas Instruments, which maintains similar SP8T functionality and pinout configurations.

FAQ

What is the maximum analog voltage swing supported by the MC74LVX4051?

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 external protection required for voltage transients?

If voltage transients exceeding VCC or falling below VEE are anticipated on the analog channels, external Germanium or Schottky diodes are recommended to absorb current surges during clipping.