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SN74AS74ADRG4 Fiches technique(PDF) 3 Page - Texas Instruments

No de pièce SN74AS74ADRG4
Description  DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR AND PRESET
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
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SN74AS74ADRG4 Fiches technique(HTML) 3 Page - Texas Instruments

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SN54ALS74A, SN54AS74A, SN74ALS74A, SN74AS74A
DUAL POSITIVEEDGETRIGGERED DTYPE FLIPFLOPS
WITH CLEAR AND PRESET
SDAS143C − APRIL 1982 − REVISED AUGUST 1995
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251−1443
recommended operating conditions
SN54ALS74A
SN74ALS74A
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
VIH
High-level input voltage
2
2
V
VIL
Low-level input voltage
0.7
0.8
V
IOH
High-level output current
− 0.4
− 0.4
mA
IOL
Low-level output current
4
8
mA
fclock
Clock frequency
0
25
0
34
MHz
PRE or CLR low
15
15
tw
Pulse duration
CLK high
17.5
14.5
ns
tw
Pulse duration
CLK low
17.5
14.5
ns
tsu
Setup time before CLK
Data
16
15
ns
tsu
Setup time before CLK
PRE or CLR inactive
10
10
ns
th
Hold time after CLK
Data
2
0
ns
TA
Operating free-air temperature
−55
125
0
70
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS74A
SN74ALS74A
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
MIN
TYP†
MAX
UNIT
VIK
VCC = 4.5 V,
II = −18 mA
−1.5
−1.5
V
VOH
VCC = 4.5 V to 5.5 V,
IOH = − 2 mA
VCC −2
VCC −2
V
VOL
VCC = 4.5 V
IOL = 4 mA
0.25
0.4
0.25
0.4
V
VOL
VCC = 4.5 V
IOL = 8 mA
0.35
0.5
V
II
CLK or D
VCC = 4.5 V,
VI = 7 V
0.1
0.1
mA
II
PRE or CLR
VCC = 4.5 V,
VI = 7 V
0.2
0.2
mA
IIH
CLK or D
VCC = 4.5 V,
VI = 2.7 V
20
20
A
IIH
PRE or CLR
VCC = 4.5 V,
VI = 2.7 V
40
40
µA
IIL
CLK or D
VCC = 4.5 V,
VI = 0.4 V
− 0.2
− 0.2
mA
IIL
PRE or CLR
VCC = 4.5 V,
VI = 0.4 V
− 0.4
− 0.4
mA
IO‡
VCC = 5.5 V,
VO = 2.25 V
−20
−112
−30
−112
mA
ICC
VCC = 5.5 V,
See Note 1
2.4
4
2.4
4
mA
† All typical values are at VCC = 5 V, TA = 25°C.
‡ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
NOTE 1: ICC is measured with D, CLK, and PRE grounded, then with D, CLK, and CLR grounded.


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