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SN74ALS259NE4 Datasheet(PDF) 4 Page - Texas Instruments

No. de pieza SN74ALS259NE4
Descripción Electrónicos  8-BIT ADDRESSABLE LATCHES
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SN74ALS259NE4 Datasheet(HTML) 4 Page - Texas Instruments

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SN54ALS259, SN74ALS259
8BIT ADDRESSABLE LATCHES
SDAS217A − DECEMBER 1982 − REVISED DECEMBER 1994
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251−1443
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN54ALS259
−55
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74ALS259
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
−65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN54ALS259
SN74ALS259
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
tw
Pulse duration
G low
20
15
ns
tw
Pulse duration
CLR low
10
10
ns
tsu
Setup time
Data before G
20
15
ns
tsu
Setup time
Address before G
20
15
ns
th
Hold time
Data after G
0
0
ns
th
Hold time
Address after G
0
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
SN54ALS259
SN74ALS259
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 = − 0.4 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
VCC = 5.5 V,
VI = 7 V
0.1
0.1
mA
IIH
VCC = 5.5 V,
VI = 2.7 V
20
20
µA
IIL
VCC = 5.5 V,
VI = 0.4 V
− 0.1
− 0.1
mA
IO§
VCC = 5.5 V,
VO = 2.25 V
−20
−112
−30
−112
mA
ICC
VCC = 5.5 V
14
22
14
22
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.


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