MM54HC273/MM74HC273 Octal D
Flip-Flops with Clear
General Description
These edge triggered flip-flops utilize advanced silicon-gate
CMOS technology to implement D-type flip-flops. They possess
high noise immunity, low power, and speeds comparable
to low power Schottky TTL circuits. This device contains
8 master-slave flip-flops with a common clock and common
clear. Data on the D input having the specified setup and
hold times is transferred to the Q output on the low to high
transition of the CLOCK input. The CLEAR input when low,
sets all outputs to a low state.
Each output can drive 10 low power Schottky TTL equivalent
loads. The MM54HC273/MM74HC273 is functionally
as well as pin compatible to the 54LS273/74LS273. All inputs
are protected from damage due to static discharge by
diodes to VCC and ground.
Features
Y Typical propagation delay: 18 ns
Y Wide operating voltage range
Y Low input current: 1 mA maximum
Y Low quiescent current: 80 mA (74 Series)
Y Output drive: 10 LS-TTL loads