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SN74AS257N датащи(PDF) 6 Page - Texas Instruments

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номер детали SN74AS257N
подробное описание детали  QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
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SN74AS257N датащи(HTML) 6 Page - Texas Instruments

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SN54ALS257A, SN54ALS258A, SN74ALS257A, SN74ALS258A, SN74AS257, SN74AS258
QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS
WITH 3STATE OUTPUTS
SDAS124C − APRIL 1982 − REVISED AUGUST 1996
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251−1443
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN74AS257
SN74AS258
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
VIK
VCC = 4.5 V,
II = −18 mA
−1.2
V
VOH
VCC = 4.5 V to 5.5 V,
IOH = −2 mA
VCC −2
V
VOH
VCC = 4.5 V,
IOH = −15 mA
2.4
3.2
V
VOL
VCC = 4.5 V,
IOL = 48 mA
0.35
0.5
V
IOZH
VCC = 5.5 V,
VO = 2.7 V
50
µA
IOZL
VCC = 5.5 V,
VO = 0.4 V
−50
µA
II
A, B, or OE
VCC = 5.5 V,
VI = 7 V
0.1
mA
II
A/B
VCC = 5.5 V,
VI = 7 V
0.2
mA
IIH
A, B, or OE
VCC = 5.5 V,
VI = 2.7 V
20
A
IIH
A/B
VCC = 5.5 V,
VI = 2.7 V
40
µA
IIL
A, B, or OE
VCC = 5.5 V,
VI = 0.4 V
−0.5
mA
IIL
A/B
VCC = 5.5 V,
VI = 0.4 V
−1
mA
IO‡
VCC = 5.5 V,
VO = 2.25 V
−30
−112
mA
Outputs high
12.1
19.7
SN74AS257
VCC = 5.5 V
Outputs low
19
30.6
ICC
SN74AS257
VCC = 5.5 V
Outputs disabled
19.7
31.9
mA
ICC
Outputs high
8.4
13.5
mA
SN74AS258
VCC = 5.5 V
Outputs low
15.2
24.6
SN74AS258
VCC = 5.5 V
Outputs disabled
15.5
25.2
† 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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