N74F640 查看數據表（PDF） - Philips Electronics
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N74F640 Datasheet PDF : 11 Pages
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Philips Semiconductors
Octal bus transceiver, inverting (3-State)
Product specification
74F640
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation delay
An to Bn, Bn to An
Output Enable time
to High or Low level
Output Disable time
from High or Low level
TEST
CONDITION
Waveform
NO TAG
Waveform 3
Waveform 2
Waveform 3
Waveform 2
LIMITS
VCC = +5V
Tamb = +25°C
CL = 50pF, RL = 500Ω
MIN TYP MAX
VCC = +5V ± 10%
Tamb = 0°C to +70°C
CL = 50pF, RL = 500Ω
MIN
MAX
2.0
4.5
7.0
2.0
8.0
1.0
2.5
5.0
1.0
5.5
5.5
6.5 10.5
5.0
12.0
5.5
7.0 10.5
5.0
11.0
2.0
3.5
6.5
1.5
8.0
2.0
4.5
7.0
2.0
7.5
UNIT
ns
ns
ns
1989 Nov 27
6
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