SGS Thomson Microelectronics M74HCT74 Datasheet
DUAL D TYPE FLIP FLOP WITH PRESET AND CLEAR
.HIGH SPEED
f
= 53 MHz (TYP.) AT VCC=5V
MAX
.LOWPOWER DISSIPATION
ICC=2µA(MAX.) AT TA=25°C
.COMPATIBLE WITH TTL OUTPUTS
VIH= 2V (MIN.) VIL= 0.8V(MAX)
.OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
.SYMMETRICALOUTPUT IMPEDANCE
IOH =IOL= 4 mA (MIN.)
.BALANCEDPROPAGATION DELAYS
t
PLH=tPHL
.PIN AND FUNCTION COMPATIBLE
WITH 54/74LS74
DESCRIPTION
The M54/74HCT74 is a high speedCMOS DUALD
TYPE FLOP WITH PRESET AND CLEAR fabricated in silicon gate C2MOS technology. It has the
same high speed performance of LSTTL combined
withtrueCMOSlowpowerconsumption.Asignal on
the DINPUTis transferredtotheQOUTPUTduring
the positive going transition of the clock pulse.
CLEARand PRESET are independent of the clock
andaccomplishedbyalowontheappropriate input.
All inputs are equipped with protection 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 designedto directly interface HSC2MOSsystems with
TTLand NMOScomponents. Theyare also plug in
replacements for LSTTL devices giving areduction
of power consumption.
M54HCT74
M74HCT74
B1R
(PlasticPackage)
M1R
(MicroPackage)
ORDER CODES :
M54HC T74F1R M74H CT74M1R
M74HC T74B1R M74HCT74C1R
PIN CONNECTIONS (top view)
F1R
(CeramicPackage)
C1R
(Chip Carrier)
INPUT AND OUTPUT EQUIVALENT CIRCUIT
February 1993
NC =
No Internal
Connection
1/11
M54/M74HCT74
TRUTH TABLE
INPUTS OUTPUTS
CLR PR D CK Q Q
L H X X L H CLEAR
H L X X H L PRESET
LLXXHH
HHL LH
HHH HL
HHX Q
X:Don’tCare
PIN DESCRIPTION
IEC LOGIC SYMBOL
n
Q
n
PIN No SYMBOL NAME AND FUNCTION
1, 13 1CLR,
2CLR
Asyncronous Reset -
Direct Input
2, 12 1D, 2D Data Inputs
3, 11 1CK, 2CK Clock Input
(LOW-to-HIGH, Edge-
Triggered)
4, 10 1PR, 2PR Asyncronous Set - Direct
Input
5, 9 1Q, 2Q True Flip-Flop Outpus
6, 8 1Q, 2Q Complement Flip-Flop
Outputs
7 GND Ground (0V)
14 V
CC
Positive Supply Voltage
FUNCTION
NO CHANGE
LOGI C DI AGRAM
2/11
M54/M74HCT74
ABSOLU TE M AXIMU M R AT INGS
Symbol Parameter Value Unit
V
CC
V
V
O
I
IK
I
OK
I
O
I
or I
CC
P
D
T
stg
T
L
AbsoluteMaximumRatingsarethosevalues beyond whichdamagetothedevicemayoccur.Functionaloperationunder these conditionisnotimplied.
(*)500 mW:≅ 65oC derateto300mWby 10mW/oC: 65oCto85oC
RECO MM ENDED OPERAT IN G CO NDITIONS
Symbol Parameter Value Unit
V
CC
V
I
V
O
T
op
t
r,tf
Supply Voltage -0.5 to +7 V
DC Input Voltage -0.5 to VCC+ 0.5 V
I
DC Output Voltage -0.5 to VCC+ 0.5 V
DC Input Diode Current ± 20 mA
DC Output Diode Current ± 20 mA
DC Output Source Sink Current Per Output Pin ± 25 mA
DC VCCor Ground Current ± 50 mA
GND
Power Dissipation 500 (*) mW
Storage Temperature -65 to +150
Lead Temperature (10 sec) 300
Supply Voltage 4.5 to 5.5 V
Input Voltage 0 to V
Output Voltage 0 to V
Operating Temperature: M54HC Series
M74HC Series
CC
CC
-55 to +125
-40 to +85
Input Rise and Fall Time (VCC= 4.5 to 5.5V) 0 to 500 ns
o
C
o
C
V
V
o
C
o
C
3/11
M54/M74HCT74
DC SPECIFICATIONS
Symbol Parameter
V
V
V
V
I
∆I
High Level Input
IH
Voltage
Low Level Input
IL
Voltage
High Level
OH
Output Voltage
Low Level Output
OL
Voltage
Input Leakage
I
I
Current
Quiescent Supply
CC
Current
Additional worst
CC
case supply
current
Test Conditions Value
V
(V)
4.5
CC
=25oC
A
54HC and 74HC
Min. Typ. Max. Min. Max. Min. Max.
2.0 2.0 2.0 V
-40 to 85oC
74HC
-55 to 125oC
54HC
Unit
T
to
5.5
4.5
0.8 0.8 0.8 V
to
5.5
VI=
IO=-20 µA 4.4 4.5 4.4 4.4
V
IH
4.5
or
I
=-4.0 mA 4.18 4.31 4.13 4.10
O
V
IL
VI=
IO=20µA 0.0 0.1 0.1 0.1
V
IH
4.5
or
I
= 4.0 mA 0.17 0.26 0.33 0.4
O
V
IL
VI=VCCor GND ±0.1 ±1 ±1 µA
5.5
5.5 VI=VCCor GND 2 20 40 µA
5.5 Per Input pin
2.0 2.9 3.0 mA
VI= 0.5V or
V
= 2.4V
I
Other Inputs at
VCCor GND
IO=0
V
V
4/11
Loading...