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ST Microelectronics - DUAL D TYPE FLIP FLOP WITH PRESET AND CLEAR

Numéro de référence M54HCT74
Description DUAL D TYPE FLIP FLOP WITH PRESET AND CLEAR
Fabricant ST Microelectronics 
Logo ST Microelectronics 





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M54HCT74 fiche technique
M54HCT74
M74HCT74
DUAL D TYPE FLIP FLOP WITH PRESET AND CLEAR
. HIGH SPEED
fMAX = 53 MHz (TYP.) AT VCC = 5 V
. LOW POWER DISSIPATION
ICC = 2 µA (MAX.) AT TA = 25 °C
. COMPATIBLE WITH TTL OUTPUTS
VIH = 2V (MIN.) VIL = 0.8V (MAX)
. OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
. SYMMETRICAL OUTPUT IMPEDANCE
IOH= IOL = 4 mA (MIN.)
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. PIN AND FUNCTION COMPATIBLE
WITH 54/74LS74
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
DESCRIPTION
The M54/74HCT74 is a high speed CMOS DUAL D
TYPE FLOP WITH PRESET AND CLEAR fabri-
cated in silicon gate C2MOS technology. It has the
same high speed performance of LSTTL combined
with true CMOS low power consumption. A signal on
the D INPUT is transferred to the Q OUTPUT during
the positive going transition of the clock pulse.
CLEAR and PRESET are independent of the clock
and accomplished by a low on the appropriate input.
All inputs are equipped with protection circuits
against static discharge and transient excess volt-
age. This integrated circuit has input and output
characteristics that are fully compatible with 54/74
LSTTL logic families. M54/74HCT devices are de-
signed to directly interface HSC2MOS systems with
TTL and NMOS components. They are also plug in
replacements for LSTTL devices giving a reduction
of power consumption.
ORDER CODES :
M54HCT74F1R
M74HCT74M1R
M74HCT74B1R
M 74H CT 7 4C 1R
PIN CONNECTIONS (top view)
INPUT AND OUTPUT EQUIVALENT CIRCUIT
February 1993
NC =
No Internal
Connection
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