74HCT 查看數據表（PDF） - Philips Electronics
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74HCT Datasheet PDF : 19 Pages
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Philips Semiconductors
HCMOS family characteristics
FAMILY SPECIFICATIONS
DC CHARACTERISTICS FOR 74HCT
Voltages are referenced to GND (ground = 0 V)
SYMBOL PARAMETER
VIH
VIL
VOH
VOH
VOH
VOL
VOL
VOL
±II
±IOZ
HIGH level input
voltage
LOW level input
voltage
HIGH level output
voltage
all outputs
HIGH level output
voltage
standard outputs
HIGH level output
voltage
bus driver outputs
LOW level output
voltage
all outputs
LOW level output
voltage
standard outputs
LOW level output
voltage
bus driver outputs
input leakage
current
3-state OFF-state
current
ICC
quiescent supply
current
SSI
flip-flops
MSI
LSI
Tamb (°C)
TEST CONDITIONS
74HCT
+25
−40 to +85
−40 to +125
UNIT
VCC
(V)
VI
min. typ. max. min. max. min. max.
OTHER
2.0 1.6
2.0
2.0
V
4.5
to
5.5
1.2 0.8
0.8
0.8 V
4.4 4.5
4.4
4.4
V
3.98 4.32
3.84
3.7
V
3.98 4.32
3.84
3.7
V
0 0.1
0.1
0.1 V
0.15 0.26
0.33
0.4 V
0.16 0.26
0.33
0.4 V
0.1
1.0
1.0 µA
0.5
5.0
10.0 µA
4.5
to
5.5
4.5 VIH
or
−IO = 20 µA
VIL
4.5 VIH
or
−IO = 4.0 mA
VIL
4.5 VIH
or
−IO = 6.0 mA
VIL
4.5 VIH
or
IO = 20 µA
VIL
4.5 VIH
or
IO = 4.0 mA
VIL
4.5 VIH
or
IO = 6.0 mA
VIL
5.5 VCC
or
GND
5.5 VIH
or
VIL
VO = VCC or
GND per input
pin;
other inputs at
VCC or GND;
IO = 0
2.0
4.0
8.0
50.0
20.0
40.0
80.0
500
40.0 µA
80.0
160.0
1000
5.5 VCC IO = 0
5.5 or
IO = 0
5.5 GND IO = 0
5.5
IO = 0
March 1988
5
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