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SN54ACT74 Datasheet(PDF) 4 Page - Texas Instruments

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Part No. SN54ACT74
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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SN54ACT74, SN74ACT74
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH CLEAR AND PRESET
SCAS520E – AUGUST 1995 – REVISED JANUARY 2000
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
V
TA = 25°C
SN54ACT74
SN74ACT74
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
IOH =50 µA
4.5 V
4.4
4.49
4.4
4.4
IOH = –50 µA
5.5 V
5.4
5.49
5.4
5.4
VOH
IOH =24 mA
4.5 V
3.86
3.7
3.76
V
VOH
IOH = –24 mA
5.5 V
4.86
4.7
4.76
V
IOH = –50 mA†
5.5 V
3.86
IOH = –75 mA†
5.5 V
3.85
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 =24mA
4.5 V
0.36
0.5
0.44
V
VOL
IOL = 24 mA
5.5 V
0.36
0.5
0.44
V
IOL = 50 mA†
5.5 V
1.65
IOL = 75 mA†
5.5 V
1.65
II
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
∆ICC‡
One input at 3.4 V,
Other inputs at GND or VCC
5.5 V
0.6
1.6
1.5
mA
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.
‡ This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or VCC.
timing characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 1)
TA = 25°C
SN54ACT74
SN74ACT74
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
fclock
Clock frequency
0
145
0
145
0
145
MHz
t
Pulse duration
PRE or CLR low
5
7
6
ns
tw
Pulse duration
CLK
5
7
6
ns
t
Set p time data before CLK
Data
3
4
3.5
ns
tsu
Setup time, data before CLK
PRE or CLR inactive
0
0.5
0
ns
th
Hold time, data after CLK
1
1
1
ns
switching characteristics over recommended operating free-air temperature (unless otherwise
noted) (see Figure 1)
FROM
TO
SN54ACT74
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
TA = 25°C
MIN
MAX
UNIT
(INPUT)
(OUTPUT)
MIN
TYP
MAX
MIN
MAX
fmax
145
210
85
MHz
tPLH
PRE or CLR
QorQ
1
5.5
9.5
1
11.5
ns
tPHL
PRE or CLR
Q or Q
1
6
10
1
12.5
ns
tPLH
CLK
QorQ
1
7.5
11
1
14
ns
tPHL
CLK
Q or Q
1
6
10
1
12
ns




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