MC74LVXT4051DR2

Overview

The MC74LVXT4051DR2 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 the full supply range from VEE to VCC. Key electrical parameters include a maximum propagation delay of 40 ns at 2.5 V, reducing to 23 ns at 4.5 V. The maximum ON resistance is 86 Ω at 3.0 V, while off-channel leakage current remains low at 0.1 µA. The component provides an 80 MHz bandwidth and -70 dB feedthrough isolation.

Feature Summary

• 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 switching transitions.
• Provides over-voltage tolerant (OVT) digital inputs compatible with standard TTL levels for level translation.
• Supports operation on a single supply with VEE connected to GND or split supplies up to ±3.0 V.

Applications

• Signal routing in data acquisition systems requiring analog voltage selection.
• Level translation interfaces between 3.0 V logic circuits and ±3.0 V analog signals.
• Audio and video signal path switching in consumer electronics.
• Multiplexing sensor inputs in industrial control applications.

Procurement Notes

Verify the ordering suffix DR2 corresponds to the SOIC-16 package in tape and reel format containing 2500 units per reel. Confirm RoHS compliance status as indicated by the specific suffix variant. Ensure the procurement documentation matches the manufacturer's official datasheet specifications for the MC74LVXT4051 series to guarantee functional equivalence.

Selection Notes

Select this component when a single 8:1 analog switch is required with TTL-compatible control logic. It is suitable for applications needing fast switching speeds and low distortion. Consider the SOIC-16 package constraints regarding thermal dissipation and board space. Verify that the analog signal swing stays within the defined VCC and VEE limits to ensure proper device operation.

Part Context

This device belongs to the LVXT family of analog switches, designed for low-voltage applications. It shares pinout compatibility with HC4051A and metal-gate MC14051B devices, facilitating direct upgrades in existing designs. The LVXT series specifically targets improved performance metrics such as reduced ON resistance and enhanced linearity over previous generations.

Replacement Considerations

Public confirmed substitute part numbers include MC74LVXT4051DR2G and MC74LVXT4051DTR2. These variants maintain identical electrical characteristics and pin configurations. Verify package type consistency when substituting to ensure mechanical fitment on the printed circuit board.

FAQ

What is the maximum analog voltage swing allowed?

The analog inputs/outputs can swing between VCC as the positive limit and VEE as the negative limit. The difference between VCC and VEE must not exceed 6.0 V.

How does the Enable pin function?

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. When LOW, one switch is selected based on the select inputs.

Is the device compatible with 5V logic?

Yes, the Channel-Select and Enable inputs are compatible with standard TTL levels and are over-voltage tolerant, allowing operation with digital supplies up to 6.0 V.