The MC74LVXT4051 utilizes silicon-gate CMOS technology to achieve fast propagation delays, low ON resistances, and low leakage currents. This analog multiplexer/demultiplexer controls analog voltages that may vary across the complete power supply range (from V
to V
).
The LVXT4051 is similar in pinout to the LVX8051, the HC4051A, and the metal-gate MC14051B. The Channel-Select inputs determine which one of the Analog Inputs/Outputs is to be connected, by means of an analog switch, to the Common Output/Input. When the Enable pin is HIGH, all analog switches are turned off.
The Channel-Select and Enable inputs are compatible with standard TTL levels. These inputs are over-voltage tolerant (OVT) for level translation from 6.0 V down to 3.0 V.
This device has been designed so the ON resistance (R
) is more linear over input voltage than the R
of metal-gate CMOS analog switches and High-Speed CMOS analog switches.

• Select Pins Compatible with TTL Levels
• Fast Switching and Propagation Speeds
• Low Crosstalk Between Switches
• Analog Power Supply Range (V
• - V
• ) = -3.0 V to +3.0 V
• Digital (Control) Power Supply Range (V
• - GND) = 2.5 to 6.0 V
• Improved Linearity and Lower ON Resistance than Metal-Gate, HSL, or VHC Counterparts
• Low Noise
• Designed to Operate on a Single Supply with V
• = GND, or UsingSplit Supplies up to +/- 3.0 V
• Break-Before-Make Circuitry
• Pb-Free Packages are Available*