IN74HC4051 is a high-performance silicon-gate CMOS switch array, introduced by Infineon. This product features fast propagation delays, low on-resistances, and low off-leakage currents. These switches control analog voltages that may vary across the complete power supply range (from VCC to VEE). 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 pull-up resistors, they are compatible with LS/ALSTTL outputs.
The IN74HC4051 is a high‑performance silicon‑gate CMOS analog multiplexer/demultiplexer that can switch analog signals across the full power‑supply range. Channel‑select inputs choose which of the eight analog inputs/outputs is connected to the common I/O, and an enable pin can turn all switches off.
The datasheet lists ordering information, maximum ratings, recommended operating conditions, and detailed electrical characteristics for both digital and analog sections, including propagation delays, on‑resistance, leakage currents, and power dissipation.
| Analog Power Supply Range (Vcc‑Vee) | 2.0 V to 12.0 V |
|---|---|
| Operating Temperature (All Packages) | -55 °C to +125 °C |
| Maximum Power Dissipation (Plastic DIP) | 750 mW |
| Maximum Input Current per Pin | 25 mA |
| On‑Resistance (Ron) typical | 1.5 Ω |
The analog supply voltage (Vcc‑Vee) should be between 2.0 V and 12.0 V.
The device can operate from –55 °C up to +125 °C.
It is a single‑pole, 8‑position multiplexer with a common‑off, giving eight selectable analog channels.
Each pin can handle up to 25 mA of DC input current.