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SN74AHCT244IPWRQ1 датащи(PDF) 3 Page - Texas Instruments

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номер детали SN74AHCT244IPWRQ1
подробное описание детали  OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS
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SN74AHCT244Q1
OCTAL BUFFER/DRIVER
WITH 3STATE OUTPUTS
SCLS529C − AUGUST 2003 − REVISED APRIL 2008
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25°C
MIN
MAX
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
UNIT
VOH
IOH = −50 mA
4.5 V
4.4
4.5
4.4
V
VOH
IOH = −8 mA
4.5 V
3.94
3.8
V
VOL
IOL = 50 mA
4.5 V
0.1
0.1
V
VOL
IOL = 8 mA
4.5 V
0.36
0.44
V
IOZ
VO = VCC or GND
5.5 V
±0.25
±2.5
mA
II
VI = 5.5 V or GND
0 V to 5.5 V
±0.1
±1
mA
ICC
VI = VCC or GND,
IO = 0
5.5 V
4
40
mA
∆ICC†
One input at 3.4 V,
Other inputs at VCC or GND
5.5 V
1.35
1.5
mA
Ci
VI = VCC or GND
5 V
2.5
10
pF
Co
VO = VCC or GND
5 V
3
pF
† This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC.
switching characteristics over recommended operating free-air temperature range,
VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
LOAD
TA = 25°C
MIN
MAX
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
MIN
TYP
MAX
MIN
MAX
UNIT
tPLH
A
Y
CL = 15 pF
5.4
7.4
1
8.5
ns
tPHL
A
Y
CL = 15 pF
5.4
7.4
1
8.5
ns
tPZH
OE
Y
CL = 15 pF
7.7
10.4
1
12
ns
tPZL
OE
Y
CL = 15 pF
7.7
10.4
1
12
ns
tPHZ
OE
Y
CL = 15 pF
5
9.4
1
10
ns
tPLZ
OE
Y
CL = 15 pF
5
9.4
1
10
ns
tPLH
A
Y
CL = 50 pF
5.9
8.4
1
9.5
ns
tPHL
A
Y
CL = 50 pF
5.9
8.4
1
9.5
ns
tPZH
OE
Y
CL = 50 pF
8.2
11.4
1
13
ns
tPZL
OE
Y
CL = 50 pF
8.2
11.4
1
13
ns
tPHZ
OE
Y
CL = 50 pF
8.8
11.4
1
13
ns
tPLZ
OE
Y
CL = 50 pF
8.8
11.4
1
13
ns
tsk(o)
CL = 50 pF
1
ns
noise characteristics, VCC = 5 V, CL = 50 pF, TA = 25°C (see Note 4)
PARAMETER
MIN
TYP
MAX
UNIT
VOH(V)
Quiet output, minimum dynamic VOH
4.1
V
VIH(D)
High-level dynamic input voltage
2
V
VIL(D)
Low-level dynamic input voltage
0.8
V
NOTE 4: Characteristics are for surface-mount packages only.
operating characteristics, VCC = 5 V, TA = 25°C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load,
f = 1 MHz
8.2
pF


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