74HC4051AP AP模拟开关芯片

74HC4051A

The TC74HC4051A/4052A/4053A are high speed CMOS ANALOG MULTIPLEXER/DEMULTIPLEXER fabricated with silicon gate C 2 MOS technology. They achieve the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. The TC74HC4051A has an 8 channel configuration, the

TC74HC4052A has a 4 channel × 2 configuration and the TC74HC4053A has a 2 channel × 3 configuration.

The digital signal to the control terminal turns “ON” the corresponding switch of each channel a large amplitude signal (V CC − V EE ) can then be switched by the small logical amplitude (V CC − GND) control signal. For example, in the case of V CC = 5 V, GND = 0 V, V EE = −5 V, signals between −5 V and +5 V can be switched from the logical circuit with a single power supply of 5 V. As the ON-resistance of each switch is low, they can be connected to circuits with low input impedance. All inputs are equipped with protection circuits against static

discharge or transient excess voltage.

74HC4051A Features

•  High speed: t pd = 15 ns (typ.) at V CC = 5 V, V EE = 0 V

•  Low power dissipation: I CC = 4 μA (max) at Ta = 25°C

•  High noise immunity: V NIH = V NIL = 28% V CC (min)

•  Low ON resistance: R ON = 50 Ω (typ.) at V CC − V EE = 9 V

•  High noise immunity: THD = 0.02% (typ.) at V CC − V EE = 9 V

•  Pin and function compatible with 4051/4052/4053B