74HC40102 Datasheet, PDF (9/11 Pages) NXP Semiconductors – 8-bit synchronous BCD down counter

Philips Semiconductors
8-bit synchronous BCD down counter
Product specification
74HC/HCT40102
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
74HCT
+25
−40 to +85
−40 to +125
UNIT
V_CC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
t_PHL/ t_PLH
t_PHL/ t_PLH
t_PHL/ t_PLH
t_PLH
t_THL/ t_TLH
propagation delay
P_n; CP to TC
propagation delay
TE to TC
propagation delay
PL to TC
propagation delay
MR to TC
output transition time
38 63
25 50
49 83
31 55
7 15
79
95 ns 4.5 Figs 8 and 8
63
75 ns 4.5 Fig.8
104
125 ns 4.5 Fig.8
69
83 ns 4.5 Fig.8
19
22 ns 4.5 Figs 8 and 8
t_W
clock pulse width
33 11
41
50
HIGH or LOW
t_W
master reset pulse width 30 16
38
45
LOW
t_W
preset enable pulse width 43 25
54
65
PL; LOW
t_rem
removal time
PL; MR to CP
10 1
13
15
t_su
set-up time
PE to CP
20 10
25
30
t_su
set-up time
TE to CP
40 20
50
60
t_su
set-up time
P_n to CP
t_h
hold time
PE to CP
20 12
25
30
0 −4
0
0
t_h
hold time
TE to CP
0 −15
0
0
t_h
hold time
P_n to CP
0 −6
0
0
f_max
maximum clock pulse
15 27
12
10
frequency
ns 4.5 Fig.8
ns 4.5 Fig.8
ns 4.5 Fig.8
ns 4.5 Fig.8
ns 4.5 Fig.8
ns 4.5 Fig.8
ns 4.5 Fig.8
ns 4.5 Fig.8
ns 4.5 Fig.8
ns 4.5 Fig.8
MHz 4.5 Fig.8
December 1990
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