Datasheet

M54/74HCT564
M54/74HCT574
September 1993
HCT564 INVERTING - HCT574 NON INVERTING
OCTAL D-TYPE FLIP FLOP WITH 3 STATE OUTPUT
B1R
(Plastic Package)
ORDER CODES :
M54HCTXXXF1R M74HCTXXXM1R
M74HCTXXXB1R M74HCTXXXC1R
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
PIN CONNECTION (top view)
.HIGH SPEED
f
MAX
= 62 MHz (TYP.) AT V
CC
=5V
.LOW POWER DISSIPATION
I
CC
=4µA (MAX.) AT T
A
=25°C
.COMPATIBLE WITH TTL OUTPUTS
V
IH
= 2V (MIN.) V
IL
= 0.8V (MAX)
.OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
.SYMMETRICAL OUTPUT IMPEDANCE
I
OL
= I
OH
= 6 mA (MIN.)
.BALANCEDPROPAGATION DELAYS
t
PLH
=t
PHL
.PIN AND FUNCTION COMPATIBLE
WITH 54/74LS564/574
DESCRIPTION
The M54/74HCT564 and M54HCT574 are high
speed CMOS OCTAL D-TYPE FLIPFLOP WITH 3-
STATE OUTPUTSfabricated in silicon gate C
2
MOS
technology. They have the same high speed per-
formance of LSTTL combined with true CMOS low
power comsuption. These 8-bit D-type flip-flops are
controlled by a clockinput(CK) and anouput enable
input (OE).On thepositive transition of theclock,the
Q outputs will be set to thelogic statethatwere setup
at the D inputs (HCT574) or their complements
(HCT564).
While the OE input is low, the eight outputs will be
in a normal logic state (high or low logic level), and
while high level, the outputs will be in a high imped-
ance state. The output control does not affect the in-
ternal operation of flip-flops. That is, theold data can
be retained or the new data can be entered even
while the outputs are off. The application engineer
has a choice of combination of inverting and non-in-
verting outputs. The 3-state output configuration
and the wide choice of outline make bus-organized
systemssimple. All inputs are equipped withprotec-
tion circuits against static discharge and transient
excess voltage. This integrated circuit has input and
output characteristics that are fully compatible with
54/74 LSTTL logic families. M54/74HCT devices
are designed to directly interface HSC
2
MOS sys-
tems with TTL and NMOS components. They are
also plug in replacements for LSTTL devices giving
a reduction of power consumption.
HCT564 HCT574 HCT564 HCT574
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Summary of content (13 pages)