74173 데이터 시트보기 (PDF) - Philips Electronics
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74173 Datasheet PDF : 10 Pages
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Philips Semiconductors
Quad D-type flip-flop; positive-edge trigger; 3-state
Product specification
74HC/HCT173
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
SYMBOL
PARAMETER
min.
74HCT
+25
−40 to +85
−40 to +125
UNIT
VCC
(V)
typ. max. min. max. min. max.
WAVEFORMS
tPHL/ tPLH propagation delay
CP to Qn
20 40
50
60 ns 4.5 Fig.6
tPHL
propagation delay
MR to Qn
20 37
46
56 ns 4.5 Fig.7
tPZH/ tPZL 3-state output enable time
20 35
44
53 ns 4.5 Fig.8
OEn to Qn
tPHZ/ tPLZ 3-state output disable time
19 30
38
45 ns 4.5 Fig.8
OEn to Qn
tTHL/ tTLH output transition time
5 12
15
19 ns 4.5 Fig.6
tW
clock pulse width
16 7
20
HIGH or LOW
tW
master reset pulse
15 6
19
width; HIGH
trem
removal time
MR to CP
12 −2
15
tsu
set-up time
En to CP
22 13
28
tsu
set-up time
Dn to CP
12 7
15
th
hold time
En to CP
0 −6
0
th
hold time
Dn to CP
0 −3
0
fmax
maximum clock pulse
30 80
24
frequency
24
ns 4.5 Fig.6
22
ns 4.5 Fig.7
18
ns 4.5 Fig.7
33
ns 4.5 Fig.9
18
ns 4.5 Fig.9
0
ns 4.5 Fig.9
0
ns 4.5 Fig.9
20
MHz 4.5 Fig.6
December 1990
9
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