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SN74AHC244QPWRG4 数据表(PDF) 4 Page - Texas Instruments

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部件名 SN74AHC244QPWRG4
功能描述  OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS
Download  13 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

SN74AHC244QPWRG4 数据表(HTML) 4 Page - Texas Instruments

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SN74AHC244Q
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SGDS017 – FEBRUARY 2002
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range,
VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
LOAD
TA = 25°C
MIN
MAX
UNIT
PARAMETER
(INPUT)
(OUTPUT)
CAPACITANCE
MIN
TYP
MAX
MIN
MAX
UNIT
tPLH
A
Y
CL =15 pF
5.8
8.4
1
10
ns
tPHL
A
Y
CL = 15 pF
5.8
8.4
1
10
ns
tPZH
OE
Y
CL =15 pF
6.6
10.6
1
12.5
ns
tPZL
OE
Y
CL = 15 pF
6.6
10.6
1
12.5
ns
tPHZ
OE
Y
CL =15 pF
5
9.7
1
11
ns
tPLZ
OE
Y
CL = 15 pF
5
9.7
1
11
ns
tPLH
A
Y
CL =50 pF
8.3
11.9
1
13.5
ns
tPHL
A
Y
CL = 50 pF
8.3
11.9
1
13.5
ns
tPZH
OE
Y
CL =50 pF
9.1
14.1
1
16
ns
tPZL
OE
Y
CL = 50 pF
9.1
14.1
1
16
ns
tPHZ
OE
Y
CL =50 pF
10.3
14
1
16
ns
tPLZ
OE
Y
CL = 50 pF
10.3
14
1
16
ns
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
(INPUT)
(OUTPUT)
CAPACITANCE
MIN
TYP
MAX
MIN
MAX
UNIT
tPLH
A
Y
CL =15 pF
3.9
5.5
1
6.5
ns
tPHL
A
Y
CL = 15 pF
3.9
5.5
1
6.5
ns
tPZH
OE
Y
CL =15 pF
4.7
7.3
1
8.5
ns
tPZL
OE
Y
CL = 15 pF
4.7
7.3
1
8.5
ns
tPHZ
OE
Y
CL =15 pF
5
7.2
1
8.5
ns
tPLZ
OE
Y
CL = 15 pF
5
7.2
1
8.5
ns
tPLH
A
Y
CL =50 pF
5.4
7.5
1
8.5
ns
tPHL
A
Y
CL = 50 pF
5.4
7.5
1
8.5
ns
tPZH
OE
Y
CL =50 pF
6.2
9.3
1
10.5
ns
tPZL
OE
Y
CL = 50 pF
6.2
9.3
1
10.5
ns
tPHZ
OE
Y
CL =50 pF
6.7
9.2
1
10.5
ns
tPLZ
OE
Y
CL = 50 pF
6.7
9.2
1
10.5
ns
noise characteristics, VCC = 5 V, CL = 50 pF, TA = 25°C (see Note 4)
PARAMETER
MIN
TYP
MAX
UNIT
VOL(P)
Quiet output, maximum dynamic VOL
0.5
V
VOL(V)
Quiet output, minimum dynamic VOL
–0.2
V
VOH(V)
Quiet output, minimum dynamic VOH
4.8
V
VIH(D)
High-level dynamic input voltage
3.5
V
VIL(D)
Low-level dynamic input voltage
1.5
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
8.6
pF


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