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SN74ACT244DWR Folha de dados(PDF) 3 Page - Texas Instruments

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Nome de Peças SN74ACT244DWR
Descrição Electrónicos  OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
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Fabricante Electrônico  TI [Texas Instruments]
Página de início  http://www.ti.com
Logo TI - Texas Instruments

SN74ACT244DWR Folha de dados(HTML) 3 Page - Texas Instruments

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SN54ACT244, SN74ACT244
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS517C – JUNE 1995 – REVISED OCTOBER 2002
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
8
8
ns/V
TA
Operating free-air temperature
–55
125
–40
85
°C
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
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
I
24
A
4.5 V
3.86
3.7
3.76
V
VOH
IOH = –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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