74HC93 Datasheet, PDF (6/7 Pages) NXP Semiconductors – 4-bit binary ripple counter

Philips Semiconductors
4-bit binary ripple counter
Product specification
74HC/HCT93
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
I_CC category: MSI
Note to HCT types
The value of additional quiescent supply current (∆I_CC) for a unit load of 1 is given in the family specifications.
To determine ∆I_CC per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
CP₀, CP₁
MR_n
UNIT LOAD COEFFICIENT
0.60
0.40
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_PHL/ t_PLH
t_PHL
t_THL/ t_TLH
propagation delay
CP₀ to Q₀
propagation delay
CP₁ to Q₁
propagation delay
CP₁ to Q₂
propagation delay
CP₁ to Q₃
propagation delay
MR_n to Q_n
output transition time
18 34
43
18 34
43
24 46
58
30 58
73
17 33
41
7 15
19
51 ns 4.5 Fig.6
51 ns 4.5 Fig.6
69 ns 4.5 Fig.6
87 ns 4.5 Fig.6
50 ns 4.5 Fig.7
22 ns 4.5 Fig.6
t_rem
removal time
10 3
13
MR_n to CP₀, CP₁
t_W
pulse width
CP₀, CP₁
16 7
20
t_W
master reset pulse width 16 5
20
MR_n
f_max
maximum clock pulse 30 70
24
frequency
CP₀, CP₁
15
ns 4.5 Fig.7
24
ns 4.5 Fig.6
24
ns 4.5 Fig.7
20
MHz 4.5 Fig.6
December 1990
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