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SN74ALS240ADBR Arkusz danych(PDF) 4 Page - Texas Instruments

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Numer części SN74ALS240ADBR
Szczegółowy opis  OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

SN74ALS240ADBR Arkusz danych(HTML) 4 Page - Texas Instruments

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SN54ALS240A, SN54AS240A, SN74ALS240A, SN74AS240A
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDAS214E – DECEMBER 1982 – REVISED AUGUST 2002
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
V
VIH
High-level input voltage
2
V
VIL
Low level input voltage
SN54ALS240A
0.7
V
VIL
Low-level input voltage
SN74ALS240A, ’AS240A
0.8
V
IOH
High level output current
SN54ALS240A, SN54AS240A
– 12
mA
IOH
High-level output current
SN74ALS240A, SN74AS240A
– 15
mA
SN54ALS240A
12
SN74ALS240A
24
IOL
Low-level output current
SN74ALS240A
48†
mA
SN54AS240A
48
SN74AS240A
64
TA
Operating free-air temperature
SN54ALS240A, SN54AS240A
– 55
125
°C
TA
O erating free-air tem erature
SN74ALS240A, SN74AS240A
0
70
°C
† Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS240A
SN74ALS240A
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP‡
MAX
MIN
TYP‡
MAX
UNIT
VIK
VCC = 4.5 V,
II = – 18 mA
– 1.2
– 1.2
V
VCC = 4.5 V to 5.5 V,
IOH = – 0.4 mA
VCC – 2
VCC – 2
VOH
IOH = – 3 mA
2.4
3.2
2.4
3.2
V
VOH
VCC = 4.5 V
IOH = – 12 mA
2
V
IOH = – 15 mA
2
IOL = 12 mA
0.25
0.4
0.25
0.4
VOL
VCC = 4.5 V
IOL = 24 mA
0.35
0.5
V
IOL = 48 mA†
0.35
0.5
IOZH
VCC = 5.5 V,
VO = 2.7 V
20
20
µA
IOZL
VCC = 5.5 V,
VO = 0.4 V
– 20
– 20
µA
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
Outputs high
4
11
4
11
ICC
VCC = 5.5 V
Outputs low
13
23
13
23
mA
Outputs disabled
14
25
14
25
† Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V
‡ 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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