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SN54AC74 Datasheet(PDF) 4 Page - Texas Instruments

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Part No. SN54AC74
Description  DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR AND PRESET
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN54AC74, SN74AC74
DUAL POSITIVEEDGETRIGGERED DTYPE FLIPFLOPS
WITH CLEAR AND PRESET
SCAS521F − AUGUST 1995 − REVISED OCTOBER 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25°C
SN54AC74
SN74AC74
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
3 V
2.9
4.49
2.9
2.9
IOH = −50 µA
4.5 V
4.4
5.49
4.4
4.4
IOH = −50 µA
5.5 V
5.4
5.49
5.4
5.4
VOH
IOH = −12 mA
3 V
2.56
2.4
2.46
V
VOH
IOH = −24 mA
4.5 V
3.86
3.7
3.76
V
IOH = −24 mA
5.5 V
4.86
4.7
4.76
IOH = −50 mA†
5.5 V
3.85
IOH = −75 mA†
5.5 V
3.85
3 V
0.002
0.1
0.1
0.1
IOL = 50 µA
4.5 V
0.001
0.1
0.1
0.1
IOL = 50 µA
5.5 V
0.001
0.1
0.1
0.1
VOL
IOL = 12 mA
3 V
0.36
0.5
0.44
V
VOL
IOL = 24 mA
4.5 V
0.36
0.5
0.44
V
IOL = 24 mA
5.5 V
0.36
0.5
0.44
IOL = 50 mA†
5.5 V
1.65
IOL = 75 mA†
5.5 V
1.65
II
Data pins
VI = VCC or GND
5.5 V
±0.1
±1
±1
A
II
Control pins
VI = VCC or GND
5.5 V
±0.1
±1
±1
µA
ICC
VI = VCC or GND,
IO = 0
5.5 V
2
40
20
µA
Ci
VI = VCC or GND
5 V
3
pF
† Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms.
timing requirements over recommended operating free-air temperature range,
VCC = 3.3 V " 0.3 V (unless otherwise noted) (see Figure 1)
TA = 25°C
SN54AC74
SN74AC74
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
fclock
Clock frequency
100
70
95
MHz
tw
Pulse duration
PRE or CLR low
5.5
8
7
ns
tw
Pulse duration
CLK
5.5
8
7
ns
tsu
Setup time, data before CLK
Data
4
5
4.5
ns
tsu
Setup time, data before CLK
PRE or CLR inactive
0
0.5
0
ns
th
Hold time, data after CLK
0.5
0.5
0.5
ns




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