74HC4520DB Datasheet, PDF (5/7 Pages) NXP Semiconductors – Dual 4-bit synchronous binary counter

Philips Semiconductors
Dual 4-bit synchronous binary counter
Product specification
74HC/HCT4520
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
I_CC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
TEST CONDITIONS
SYMBOL
PARAMETER
74HC
+25
−40 to +85
−40 to +125
UNIT
V_CC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
t_PHL/ t_PLH propagation delay
nCP₀ to nQ_n
t_PHL/ t_PLH propagation delay
nCP₁ to nQ_n
77 240
300
28 48
60
22 41
51
77 240
300
28 48
60
22 41
51
360 ns
72
61
360 ns
72
61
2.0 Fig.8
4.5
6.0
2.0 Fig.8
4.5
6.0
t_PHL
propagation delay
nMR to nQ_n
44 150
190
16 30
38
13 26
33
225 ns
45
38
2.0 Fig.9
4.5
6.0
t_THL/ t_TLH output transition time
t_W
clock pulse width
HIGH or LOW
19 75
7 15
6 13
80 22
16 8
14 6
95
19
16
100
20
17
110 ns
22
19
120
ns
24
20
2.0 Fig.8
4.5
6.0
2.0 Fig.7
4.5
6.0
t_W
master reset pulse width 120 39
HIGH
24 14
20 11
150
180
30
36
26
31
t_rem
removal time
0 −28
0
0
nMR to nCP₀; nCP₁ 0 −10
0
0
0 −8
0
0
t_su
set-up time
nCP₁ to nCP₀;
nCP₀ to nCP₁
80 14
16 5
14 4
100
120
20
24
17
20
f_max
maximum clock pulse 6.0 19
4.8
4.0
frequency
30 58
24
20
35 69
28
24
ns 2.0
4.5
6.0
ns 2.0
4.5
6.0
ns 2.0
4.5
6.0
MHz 2.0
4.5
6.0
Fig.7
Fig.7
Fig.8
Fig.7
December 1990
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