74HC194 Datasheet, PDF (7/10 Pages) NXP Semiconductors – 4-bit bidirectional universal shift register

Philips Semiconductors
4-bit bidirectional universal shift register
Product specification
74HC/HCT194
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
SYMBOL PARAMETER
74HC
UNIT
+25
−40 to +85 −40 to +125
min. typ. max. min. max. min. max.
t_PHL/ t_PLH propagation delay
CP to Q_n
t_PHL
propagation delay
MR to Q_n
t_THL/ t_TLH output transition time
t_W
clock pulse width
80
HIGH or LOW
16
14
t_W
master reset pulse 80
width; LOW
16
14
t_rem
removal time
60
MR to CP
12
10
t_su
set-up time
70
D_n to CP
14
12
t_su
set-up time
80
S₀, S₁ to CP
16
12
t_su
set-up time
70
D_SR, D_SL to CP
14
12
t_h
hold time
0
D_n to CP
0
0
t_h
hold time
0
S₀, S₁ to CP
0
0
t_h
hold time
0
D_SR, D_SL to CP
0
0
f_max
maximum clock pulse 6.0
frequency
30
35
47 145
17 29
14 25
39 140
14 28
11 24
19 75
7 15
6 13
17
6
5
17
6
5
17
6
5
17
6
5
22
8
6
19
7
6
−14
−5
−4
−11
−4
−3
−17
−6
−5
31
93
111
180
36
31
175
35
30
95
19
16
100
20
17
100
20
17
75
15
13
90
18
15
100
20
17
90
18
15
0
0
0
0
0
0
0
0
0
4.8
24
28
220
44
38
210
42
36
110
22
19
120
24
20
120
24
20
90
18
15
105
21
18
120
24
20
105
21
18
0
0
0
0
0
0
0
0
0
4.0
20
24
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
TEST CONDITIONS
V_CC ^WAVEFORMS
(V)
2.0 Fig.7
4.5
6.0
2.0 Fig.8
4.5
6.0
2.0 Fig.7
4.5
6.0
2.0 Fig.7
4.5
6.0
2.0 Fig.8
4.5
6.0
2.0 Fig.8
4.5
6.0
2.0 Fig.9
4.5
6.0
2.0 Fig.10
4.5
6.0
2.0
4.5
6.0
2.0 Fig.9
4.5
6.0
2.0 Fig.10
4.5
6.0
2.0
4.5
6.0
2.0 Fig.7
4.5
6.0
December 1990
7