Multiplexers | MC74HC4051

High-Performance Silicon-Gate CMOS

The MC54/74HC4051, MC74HC4052 and MC54/74HC4053 utilize silicon-gate CMOS technology to achieve fast propagation delays, low ON resistances, and low OFF leakage currents. These analog multiplexers/ demultiplexers control analog voltages that may vary across the complete power supply range (from V_CC to V_EE).

The HC4051, HC4052 and HC4053 are identical in pinout to the metal-gate MC14051B, MC14052B and MC14053B. 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 CMOS outputs; with pullup resistors they are compatible with LSTTL outputs.

These devices have been designed so that the ON resistance (R_on) is more linear over input voltage than R_on of metal-gate CMOS analog switches.

For multiplexers/demultiplexers with channel-select latches, see HC4351, HC4352 and HC4353.