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SN74AHCT244DBLE Datasheet

  • SN74AHCT244DBLE

  • OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

  • 553.79KB

  • 17页

  • TI

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SN54AHCT244, SN74AHCT244
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCLS228L 鈥?OCTOBER 1995 鈥?REVISED JULY 2003
recommended operating conditions (see Note 3)
SN54AHCT244
MIN
VCC
VIH
VIL
VI
VO
IOH
IOL
TA
Supply voltage
High-level input voltage
Low-level input voltage
Input voltage
Output voltage
High-level output current
Low-level output current
Operating free-air temperature
鈥?5
0
0
4.5
2
0.8
5.5
VCC
鈥?
8
125
鈥?0
0
0
MAX
5.5
SN74AHCT244
MIN
4.5
2
0.8
5.5
VCC
鈥?
8
85
MAX
5.5
UNIT
V
V
V
V
V
mA
mA
掳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
VOH
VOL
IOZ
II
ICC
鈭咺
CC鈥?/div>
Ci
Co
TEST CONDITIONS
IOH = 鈥?0
m
A
IOH = 鈥? mA
IOL = 50
m
A
IOL = 8 mA
VO = VCC or GND
VI = 5.5 V or GND
VI = VCC or GND,
IO = 0
One input at 3.4 V,
Other inputs at VCC or GND
VI = VCC or GND
VO = VCC or GND
VCC
4.5
45V
4.5
45V
5.5 V
0 V to 5.5 V
5.5 V
5.5 V
5V
5V
2.5
3
TA = 25掳C
MIN
TYP
MAX
4.4
3.94
0.1
0.36
卤0.25
卤0.1
4
1.35
10
4.5
SN54AHCT244
MIN
4.4
3.8
0.1
0.44
卤2.5
卤1*
40
1.5
MAX
SN74AHCT244
MIN
4.4
3.8
0.1
0.44
卤2.5
卤1
40
1.5
10
MAX
UNIT
V
V
m
A
m
A
m
A
mA
pF
pF
* On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.
鈥?This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC.
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
3

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