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SN74ACT244 датащит (Datasheet) 3 Page - Texas Instruments

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№ деталь SN74ACT244
подробность  OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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SN54ACT244, SN74ACT244
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS517B – JUNE 1995 – REVISED MAY 1996
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54ACT244
SN74ACT244
UNIT
MIN
MAX
MIN
MAX
UNIT
VCC
Supply voltage
4.5
5.5
4.5
5.5
V
VIH
High-level input voltage
2
2
V
VIL
Low-level input voltage
0.8
0.8
V
VI
Input voltage
0
VCC
0
VCC
V
VO
Output voltage
0
VCC
0
VCC
V
IOH
High-level output current
–24
–24
mA
IOL
Low-level output current
24
24
mA
∆t/∆v
Input transition rise or fall rate
0
8
0
8
ns/V
TA
Operating free-air temperature
–55
125
–40
85
°C
NOTE 3: Unused inputs must be held high or low to prevent them from floating.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25°C
SN54ACT244
SN74ACT244
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
IOH =50 µA
4.5 V
4.4
4.49
4.4
4.4
IOH = – 50 µA
5.5 V
5.4
5.49
5.4
5.4
VOH
I24
A
4.5 V
3.86
3.7
3.76
V
VOH
IOL = – 24 mA
5.5 V
4.86
4.7
4.76
V
IOH = – 50 mA†
5.5 V
3.85
IOH = –75 mA†
5.5 V
3.85
IOL =50 µA
4.5 V
0.001
0.1
0.1
0.1
IOL = 50 µA
5.5 V
0.001
0.1
0.1
0.1
VOL
IOL =24mA
4.5 V
0.36
0.5
0.44
V
VOL
IOL = 24 mA
5.5 V
0.36
0.5
0.44
V
IOL = 50 mA†
5.5 V
1.65
IOL = 75 mA†
5.5 V
1.65
IOZ
VO = VCC or GND
5.5 V
±0.25
±5
±2.5
µA
II
VI = VCC or GND
5.5 V
±0.1
±1
±1
µA
ICC
VI = VCC or GND,
IO = 0
5.5 V
4
80
40
µA
∆ICC‡
One input at 3.4 V,
Other inputs at GND or VCC
5.5 V
0.6
1.6
1.5
mA
Ci
VI = VCC or GND
5 V
2.5
pF
Co
VI = VCC or GND
5 V
8
pF
† Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms.
‡ This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or VCC.




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