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SN74AHCT245DWR Scheda tecnica(PDF) 6 Page - Texas Instruments

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Il numero della parte SN74AHCT245DWR
Spiegazioni elettronici  SNx4AHCT245 Octal Bus Transceivers With 3-State Outputs
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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SN74AHCT245DWR Scheda tecnica(HTML) 6 Page - Texas Instruments

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Temperature (GC)
-100
-50
0
50
100
150
0
1
2
3
4
5
6
7
D001
TPD in ns
SN54AHCT245, SN74AHCT245
SCLS233P – OCTOBER 1995 – REVISED JULY 2014
www.ti.com
7.6
Switching Characteristics
over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 2)
Recommended
SN54AHCT245
SN74AHCT245
TA = 25°C
SN74AHCT245
FROM
TO
LOAD
–55°C TO 125°C
–40°C TO 85°C
PARAMETER
UNIT
–40°C TO 125°C
(INPUT)
(OUTPUT)
CAPACITANCE
TYP
MAX
MIN
MAX
MIN
MAX
MIN
MAX
tPLH
4.5(1)
7.7(1)
1(1)
10(1)
1
8.5
1
10
A or B
B or A
CL = 15 pF
ns
tPHL
4.5(1)
7.7(1)
1(1)
10(1)
1
8.5
1
10
tPZH
8.9(1)
13.8(1)
1(1)
16(1)
1
15
1
16
OE
A or B
CL = 15 pF
ns
tPZL
8.9(1)
13.8(1)
1(1)
16(1)
1
15
1
16
tPHZ
9.2(1)
14.4(1)
1(1)
16.5(1)
1
15.5
1
16.5
OE
A or B
CL = 15 pF
ns
tPLZ
9.2(1)
14.4(1)
1(1)
16.5(1)
1
15.5
1
16.5
tPLH
5.3
8.7
1
11
1
9.5
1
11
A or B
B or A
CL = 50 pF
ns
tPHL
5.3
8.7
1
11
1
9.5
1
11
tPZH
9.7
14.8
1
17
1
16
1
17
OE
A or B
CL = 50 pF
ns
tPZL
9.7
14.8
1
17
1
16
1
17
tPHZ
10
15.4
1
17.5
1
16.5
1
17.5
OE
A or B
CL = 50 pF
ns
tPLZ
10
15.4
1
17.5
1
16.5
1
17.5
tsk(o)
CL = 50 pF
1(2)
1
ns
(1)
On products compliant to MIL-PRF-38535, this parameter is not production tested.
(2)
On products compliant to MIL-PRF-38535, this parameter does not apply.
7.7 Noise Characteristics
VCC = 5 V, CL = 50 pF, TA = 25°C
(1)
SN74AHCT245
PARAMETER
UNIT
MIN
TYP
MAX
VOH(V)
Quiet output, minimum dynamic VOH
4
V
VIH(D)
High-level dynamic input voltage
2
V
VIL(D)
Low-level dynamic input voltage
0.8
V
(1)
Characteristics are for surface-mount packages only.
7.8
Operating Characteristics
VCC = 5 V, TA = 25°C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load,
f = 1 MHz
13
pF
7.9 Typical Characteristics
Figure 1. SN74AHCT245 TPD vs Temperature, 15 pF Load
6
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