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SN54AHCT74 Datasheet(PDF) 4 Page - Texas Instruments

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Part No. SN54AHCT74
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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SN54AHCT74 Datasheet(HTML) 4 Page - Texas Instruments

   
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SN54AHCT74, SN74AHCT74
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH CLEAR AND PRESET
SCLS263N – DECEMBER 1995 – REVISED JULY 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
SN54AHCT74
SN74AHCT74
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
VOH
IOH = –50 mA
45 V
4.4
4.5
4.4
4.4
V
VOH
IOH = –8 mA
4.5 V
3.94
3.8
3.8
V
VOL
IOL = 50 mA
45 V
0.1
0.1
0.1
V
VOL
IOL = 8 mA
4.5 V
0.36
0.44
0.44
V
II
VI = 5.5 V or GND
0 V to 5.5 V
±0.1
±1*
±1
mA
ICC
VI = VCC or GND,
IO = 0
5.5 V
2
20
20
mA
∆ICC†
One input at 3.4 V,
Other inputs at VCC or GND
5.5 V
1.35
1.5
1.5
mA
Ci
VI = VCC or GND
5 V
2
10
10
pF
* On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.
† This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC.
timing requirements over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V
(unless otherwise noted) (see Figure 1)
PARAMETER
TA = 25°C
SN54AHCT74
SN74AHCT74
UNIT
PARAMETER
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
t
Pulse duration
PRE or CLR low
5
5
5
ns
tw
Pulse duration
CLK
5
5
5
ns
t
Setup time before CLK
Data
5
5
5
ns
tsu
Setup time before CLK
PRE or CLR inactive
3.5
3.5
3.5
ns
th
Hold time, data after CLK
0
0
0
ns
switching characteristics over recommended operating free-air temperature range,
VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
LOAD
TA = 25°C
SN54AHCT74
SN74AHCT74
UNIT
PARAMETER
(INPUT)
(OUTPUT)
CAPACITANCE
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
f
CL = 15 pF
100**
160**
80**
80
MHz
fmax
CL = 50 pF
80
140
65
65
MHz
tPLH
PRE or CLR
QorQ
CL =15 pF
7.6**
10.4**
1**
12**
1
12
ns
tPHL
PRE or CLR
Q or Q
CL = 15 pF
7.6**
10.4**
1**
12**
1
12
ns
tPLH
CLK
QQ
CL =15 pF
5.8**
7.8**
1**
9**
1
9
ns
tPHL
CLK
Q or Q
CL = 15 pF
5.8**
7.8**
1**
9**
1
9
ns
tPLH
PRE
CLR
QQ
CL =50 pF
8.1
11.4
1
13
1
13
ns
tPHL
PRE or CLR
Q or Q
CL = 50 pF
8.1
11.4
1
13
1
13
ns
tPLH
CLK
QorQ
CL =50 pF
6.3
8.8
1
10
1
10
ns
tPHL
CLK
Q or Q
CL = 50 pF
6.3
8.8
1
10
1
10
ns
** On products compliant to MIL-PRF-38535, this parameter is not production tested.


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