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
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
74HC
+25
−40 to +85
UNIT
−40 to +125
VCC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
tTHL/ tTLH output transition time
standard outputs
tTHL/ tTLH output transition time
bus driver outputs
19 75
95
110 ns 2.0 Figs 3 and 4
7 15
19
22
4.5
6 13
16
19
6.0
14 60
75
90 ns 2.0 Figs 3 and 4
5 12
15
18
4.5
4 10
13
15
6.0
AC CHARACTERISTICS FOR 74HCU
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
74HCU
+25
−40 to +85
UNIT
−40 to +125
VCC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
tTHL/ tTLH output transition time
19 75
95
110 ns 2.0 Fig.1
7 15
19
22
4.5
6 13
16
19
6.0
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
74HCT
+25
−40 to +85
UNIT
−40 to +125
VCC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
tTHL/ tTLH
tTHL/ tTLH
output transition time
standard outputs
output transition time
bus driver outputs
7 15
19
22 ns 4.5 Figs 8 and 9
5 12
15
18 ns 4.5 Figs 8 and 9
March 1988
8
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