74HC194 Datasheet, PDF (9/10 Pages) NXP Semiconductors – 4-bit bidirectional universal shift register

Philips Semiconductors
4-bit bidirectional universal shift register
Product specification
74HC/HCT194
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
SYMBOL PARAMETER
74HCT
+25
−40 to +85
min. typ. max. min. max.
t_PHL/ t_PLH propagation delay
CP to Q_n
18 32
40
t_PHL
propagation delay
MR to Q_n
18 32
40
t_THL/ t_TLH output transition time
7 15
19
TEST CONDITIONS
−40 to +125
UNIT
V_CC
(V)
min. max.
WAVEFORMS
48 ns 4.5 Fig.7
48 ns 4.5 Fig.8
22 ns 4.5 Fig.7
t_W
clock pulse width
16 7
HIGH or LOW
20
24
ns 4.5 Fig.7
t_W
master reset pulse 16 7
width; LOW
20
24
ns 4.5 Fig.8
t_rem
removal time
MR to CP
12 6
15
18
ns 4.5 Fig.8
t_su
set-up time
D_n to CP
14 7
18
21
ns 4.5 Fig.9
t_su
set-up time
20 10
25
30
ns 4.5 Fig.10
S₀, S₁ to CP
t_su
set-up time
14
D_SR, D_SL to CP
18
21
ns 4.5 Fig.9
t_h
hold time
0 −7
0
0
ns 4.5 Fig.9
D_n to CP
t_h
hold time
0 −5
0
0
ns 4.5 Fig.10
S₀, S₁ to CP
t_h
hold time
0 −7
0
0
ns 4.5 Fig.9
D_SR, D_SL to CP
f_max
maximum clock pulse 30 70
24
20
MHz 4.5 Fig.7
frequency
December 1990
9