74HC6323A Datasheet, PDF (10/15 Pages) NXP Semiconductors – Programmable ripple counter with oscillator; 3-state

Philips Semiconductors
Programmable ripple counter with
oscillator; 3-state
Product specification
74HC/HCT6323A
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
TEST CONDITION
SYMBOL PARAMETER
25
−40 to 85 −40 to 125 UNIT _VCC
MIN TYP MAX MIN MAX MIN MAX
(V)
V_I
OTHER
t_PHL/t_PLH propagation
−
24 40 −
50 −
60 ns 4.5 Fig.7 S1 = GND
delay X1 to
S2 = GND
OUT
divide-by-1
t_PHL/t_PLH propagation
−
29 50 −
62 −
75 ns 4.5 Fig.7 S1 = GND
delay X1 to
S2 = V_CC
OUT
divide-by-2
t_PHL/t_PLH propagation
−
35 60 −
75 −
90 ns 4.5 Fig.7 S1 = V_CC
delay X1 to
S2 = GND
OUT
divide-by-4
t_PHL/t_PLH propagation
−
40 70 −
87 −
105 ns 4.5 Fig.7 S1 = V_CC
delay X1 to
S2 = V_CC
OUT
divide-by-8
t_PLZ/t_PHZ 3-state output −
disable time
MR to OUT
21 35 −
43 −
52 ns 4.5 Fig.8
t_PZ
3-state output −
16 30 −
37 −
45 ns 4.5 Fig.8
enable time
MR to OUT
t_PZH
3-state output −
22 38 −
47 −
57 ns 4.5 Fig.8 see note 1
enable time
MR to OUT
t_THL/t_TLH output
−
5
12 −
15 −
19 ns 4.5 Fig.7
transition time
t_W
clock pulse
10 6
−
12 −
15 −
ns 4.5 Fig.7
width X1,
HIGH or LOW
t_W
master reset
16 8
−
20 −
24 −
ns 4.5 Fig.9
pulse width
MR; LOW
t_rem
removal time 24 12 −
30 −
36 −
ns 4.5 Fig.9
MR to X1
f_max
maximum clock 50 85 −
40 −
33 −
MHz 4.5 Fig.7
pulse frequency
Note to the 74HCT AC Characteristics
1. t_PZH only applicable in the divide-by-1 mode and X1 must be HIGH.
September 1993
10