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SN74BCT244DB Scheda tecnica(PDF) 3 Page - Texas Instruments

Il numero della parte SN74BCT244DB
Spiegazioni elettronici  OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
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SN74BCT244DB Scheda tecnica(HTML) 3 Page - Texas Instruments

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SN54BCT244, SN74BCT244
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCBS006E – OCTOBER 1987 – REVISED APRIL 1994
2–3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
SN54BCT244
SN74BCT244
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
VIH
High-level input voltage
2
2
V
VIL
Low-level input voltage
0.8
0.8
V
IIK
Input clamp current
–18
–18
mA
IOH
High-level output current
–12
–15
mA
IOL
Low-level output current
48
64
mA
TA
Operating free-air temperature
–55
125
0
70
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54BCT244
SN74BCT244
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
MIN
TYP†
MAX
UNIT
VIK
VCC = 4.5 V,
II = –18 mA
–1.2
–1.2
V
IOH = – 3 mA
2.4
3.3
2.4
3.3
VOH
VCC = 4.5 V
IOH = – 12 mA
2
3.2
V
IOH = – 15 mA
2
3.1
VOL
VCC =4 5V
IOL = 48 mA
0.38
0.55
V
VOL
VCC = 4.5 V
IOL = 64 mA
0.42
0.55
V
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 = 0.5 V
–1
–1
mA
IOZH
VCC = 5.5 V,
VO = 2.7 V
50
50
µA
IOZL
VCC = 5.5 V,
VO = 0.5 V
–50
–50
µA
IOS‡
VCC = 5.5 V,
VO = 0
– 100
– 225
– 100
– 225
mA
ICCH
VCC = 5.5 V,
Outputs open
23
40
23
40
mA
ICCL
VCC = 5.5 V,
Outputs open
53
80
53
80
mA
ICCZ
VCC = 5.5 V,
Outputs open
4
10
4
10
mA
† All typical values are at VCC = 5 V.
‡ Not more than one output should be tested at a time, and the duration of the test should not exceed one second.


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