U74AC74 View Datasheet(PDF) - Unisonic Technologies
Part Name
Description
Manufacturer
U74AC74 Datasheet PDF : 6 Pages
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U74AC74
CMOS IC
DYNAMIC CHARACTERISTICS
TA=25°C, unless otherwise specified, Input: tR, tF≤2.5ns; PRR≤1MHz
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP
Clock frequency
Pulse duration
Setup time before CLK↑
Hold time ,data after CLK↑
Clock frequency
Pulse duration
Setup time before CLK↑
Hold time ,data after CLK↑
FCLOCK VCC=3V±0.3V
VCC=3V±0.3V， PRE or CLR in Low
5.5
tw
VCC=3V±0.3V, CLK
5.5
VCC=3V±0.3V, PRE or CLR inactive
0
tsu
Data
4
th VCC=3V±0.3V
0.5
FCLOCK VCC=5V±0.5V
VCC=5V±0.5V， PRE or CLR in Low
4.5
tw
VCC=3V±0.3V, CLK
4.5
VCC=5V±0.5V, PRE or CLR inactive
0
tsu
Data
3
th VCC=5V±0.5V
0.5
DYNAMIC CHARACTERISTICS (See Fig. 1 and Fig. 2 for test circuit and waveforms.)
MAX
100
140
UNIT
MHZ
ns
ns
ns
MHz
ns
ns
ns
PARAMETER
SYMBOL
TEST CONDITIONS
Maximum clock
FMAX VCC=3V±0.3V, CL=50pF, RL=500Ω
Propagation delay from input
( PRE or CLR ) to output(Q or Q)
tPLH
tPHL
VCC=3V±0.3V, CL=50pF, RL=500Ω
Propagation delay from input
(CLK) to output(Q or Q)
tPLH
tPHL
VCC=3V±0.3V, CL=50pF, RL=500Ω
Maximum clock
FMAX VCC=5V±0.5V
Propagation delay from input
( PRE or CLR ) to output(Q or Q)
tPLH
tPHL
VCC=5V±0.5V, CL=50pF, RL=500Ω
Propagation delay from input
(CLK) to output(Q or Q)
tPLH
tPHL
VCC=5V±0.5V, CL=50pF, RL=500Ω
OPERATING CHARACTERISTICS
PARAMETER
SYMBOL
TEST CONDITIONS
Power Dissipation Capacitance
Cpd CL=50p, f=1MHz, VCC=3.3V
MIN TYP MAX UNIT
100 125
MHz
3.5 8 12
ns
4 10.5 12
4.5 8 13.5
ns
3.5 8 14
140 160
MHz
2.5 6
9
ns
3
8 9.5
3.5 6 10
ns
2.5 6 10
MIN TYP MAX UNIT
45
pF
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 6
QW-R502-800.A
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