描述 Description

When the latch enable (LE) input is high, the Q outputs of HD74HC563 will follow the inversion of the D inputs and the Q outputs of HD74HC573 will follow the D inputs. When the latch enable goes low, data at the D inputs will be retained at the outputs until latch enable returns high again. When a high logic level is applied to the output control input, all outputs go to a high impedance state, regardless of what signals are present at the other inputs and the state of the storage elements.

特性 Features

? High Speed Operation: tpd(Data to Q, Q) = 11 ns typ (CL= 50 pF)

? High Output Current: Fanout of 15 LSTTL Loads

? Wide Operating Voltage: VCC= 2 to 6 V

? Low Input Current: 1 μA max

? Low Quiescent Supply Current: ICC(static) = 4 μA max (Ta = 25°C)