M54HC273
M74HC273
October 1992
OCTAL D TYPE FLIP FLOP WITH CLEAR
B1R
(Plastic Package)
ORDER CODES :
M54HC273F1R M74HC273M1R
M74HC273B1R M74HC273C1R
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
PIN CONNECTIONS (top view)
NC =
No Internal
Connection
.HIGH SPEED
fMAX = 67 MHz (TYP.) AT VCC =5V
.LOW POWER DISSIPATION
I
CC
=4µA (MAX.) AT T
A
=25°C
.HIGH NOISE IMMUNITY
VNIH =VNIL =28%VCC (MIN.)
.OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
.SYMMETRICAL OUTPUT IMPEDANCE
IOH =IOL = 4 mA (MIN.)
.BALANCED PROPAGATION DELAYS
t
PLH
=t
PHL
.WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
.PIN AND FUNCTION COMPATIBLE WITH
54/74LS273
The M54/74HC273 is a high speed CMOS OCTAL
D-TYPE FLIP FLOP WITH CLEAR fabricated in sili-
con gate C
2
MOS technology. It has the same high
speed performance of LSTTL combined with true
CMOS low power consumption.
Information signals applied to D inputs are trans-
ferred to the Q outputs on the positive-going edge
of the clock pulse.
When the CLEAR input is held low, the Q output are
in the low logic level independent of the other inputs.
All inputs are equipped with protection circuits
against static discharge and transient excess volt-
age.
DESCRIPTION
INPUT AND OUTPUT EQUIVALENT CIRCUIT
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