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MM74HC74A
AC Electrical Characteristics
VCC = 5V, TA = 25°C, CL = 15 pF, tr = tf = 6 ns
AC Electrical Characteristics
CL = 50 pF, tr = tf = 6 ns (unless otherwise specified)
Note 6: CPD determines t he no load dy namic power con s um ption, PD = CPD VCC2 f + ICC VCC, and th e no load dynamic current co ns um ption ,
IS = CPD VCC f + ICC.
Symbol Parameter Conditions Typ Guaranteed Units
Limit
fMAX Maximum Operating Frequency 72 30 MHz
tPHL, tPLH Maximum Propagation 10 30 ns
Delay Clock to Q or Q
tPHL, tPLH Maximum Propagation 17 40 ns
Delay Preset or Clear to Q or Q
tREM Minimum Removal Time, 6 5 ns
Preset or Clear to Clock
tsMinimum Setup Time 10 20 ns
Data to Clock
tHMinimum Hold Time 0 0 ns
Clock to Data
tWMinimum Pulse Width 8 16 ns
Clock, Preset or Clear
Symbol Parameter Conditions VCC TA = 25°CT
A = −40 to 85°CT
A = −55 to 125°CUnits
Typ Guaranteed Limits
fMAX Maximum Operating 2.0V 22 6 5 4 MHz
Frequency 4.5V 72 30 24 20 MHz
6.0V 94 35 28 24 MHz
tPHL, tPLH Maximum Propagation 2.0V 34 110 140 165 ns
Delay Clock to Q or Q 4.5V 12 22 28 33 ns
6.0V 10 19 24 28 ns
tPHL, tPLH Maximum Propagation 2.0V 66 150 190 225 ns
Delay Preset or Clear 4.5V 20 30 38 45 ns
To Q or Q 6.0V 16 26 33 38 ns
tREM Minimum Removal Time 2.0V 20 50 65 75 ns
Preset or Clear 4.5V 6 10 13 15 ns
To Clock 6.0V 5 9 11 13 ns
tsMinimum Setup Time 2.0V 35 80 100 120 ns
Data to Clock 4.5V 10 16 20 24 ns
6.0V 8 14 17 20 ns
tHMinimum Hold Time 2.0V 0 0 0 ns
Clock to Data 4.5V 0 0 0 ns
6.0V 0 0 0 ns
tWMinimum, Pulse Width 2.0V 30 80 101 119 ns
Clock, Preset or Clear 4.5V 9 16 20 24 ns
6.0V 8 14 17 20 ns
tTLH, tTHL Maximum Output 2.0V 25 75 95 110 ns
Rise and Fall Time 4.5V 7 15 19 22 ns
6.0V 6 13 16 19 ns
tr, tfMaximum Input Rise 2.0V 1000 1000 1000 ns
and Fall Time 4.5V 500 500 500 ns
6.0V 400 400 400 ns
CPD Power Dissipation (per flip-flop) 80 pF
Capacitance (Note 6)
CIN Maximum Input 5 10 10 10 pF
Capacitance