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SN54AHC74 Datasheet(PDF) 5 Page - Texas Instruments

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No. de Pieza. SN54AHC74
Descripción  DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR AND PRESET
Descarga  19 Pages
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Fabricante  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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SN54AHC74 Datasheet(HTML) 5 Page - Texas Instruments

 
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SN54AHC74, SN74AHC74
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH CLEAR AND PRESET
SCLS255J – DECEMBER 1995 – REVISED JULY 2003
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range,
VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
LOAD
TA = 25°C
SN54AHC74
SN74AHC74
UNIT
PARAMETER
(INPUT)
(OUTPUT)
CAPACITANCE
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
f
CL = 15 pF
80*
125*
70*
70
MHz
fmax
CL = 50 pF
50
75
45
45
MHz
tPLH
PRE or CLR
QorQ
CL =15 pF
7.6*
12.3*
1*
14.5*
1
14.5
ns
tPHL
PRE or CLR
Q or Q
CL = 15 pF
7.6*
12.3*
1*
14.5*
1
14.5
ns
tPLH
CLK
QQ
CL =15 pF
6.7*
11.9*
1*
14*
1
14
ns
tPHL
CLK
Q or Q
CL = 15 pF
6.7*
11.9*
1*
14*
1
14
ns
tPLH
PRE
CLR
QQ
CL =50 pF
10.1
15.8
1
18
1
18
ns
tPHL
PRE or CLR
Q or Q
CL = 50 pF
10.1
15.8
1
18
1
18
ns
tPLH
CLK
QorQ
CL =50 pF
9.2
15.4
1
17.5
1
17.5
ns
tPHL
CLK
Q or Q
CL = 50 pF
9.2
15.4
1
17.5
1
17.5
ns
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
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
SN54AHC74
SN74AHC74
UNIT
PARAMETER
(INPUT)
(OUTPUT)
CAPACITANCE
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
f
CL = 15 pF
130*
170*
110*
110
MHz
fmax
CL = 50 pF
90
115
75
75
MHz
tPLH
PRE
CLR
QQ
CL =15 pF
4.8*
7.7*
1*
9*
1
9
ns
tPHL
PRE or CLR
Q or Q
CL = 15 pF
4.8*
7.7*
1*
9*
1
9
ns
tPLH
CLK
QorQ
CL =15 pF
4.6*
7.3*
1*
8.5*
1
8.5
ns
tPHL
CLK
Q or Q
CL = 15 pF
4.6*
7.3*
1*
8.5*
1
8.5
ns
tPLH
PRE
CLR
QQ
CL =50 pF
6.3
9.7
1
11
1
11
ns
tPHL
PRE or CLR
Q or Q
CL = 50 pF
6.3
9.7
1
11
1
11
ns
tPLH
CLK
QorQ
CL =50 pF
6.1
9.3
1
10.5
1
10.5
ns
tPHL
CLK
Q or Q
CL = 50 pF
6.1
9.3
1
10.5
1
10.5
ns
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
noise characteristics, VCC = 5 V, CL = 50 pF, TA = 25°C (see Note 5)
PARAMETER
SN74AHC74
UNIT
PARAMETER
MIN
MAX
UNIT
VOL(P)
Quiet output, maximum dynamic VOL
0.8
V
VOL(V)
Quiet output, minimum dynamic VOL
–0.8
V
VOH(V)
Quiet output, minimum dynamic VOH
4.7
V
VIH(D)
High-level dynamic input voltage
3.5
V
VIL(D)
Low-level dynamic input voltage
1.5
V
NOTE 5: Characteristics are for surface-mount packages only.
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load,
f = 1 MHz
32
pF


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