74HC393 Datasheet, PDF (6/7 Pages) NXP Semiconductors – Dual 4-bit binary ripple counter

Philips Semiconductors
Dual 4-bit binary ripple counter
Product specification
74HC/HCT393
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
1CP
2CP
1MR
2MR
UNIT LOAD COEFFICIENT
0.4
0.4
1.0
1.0
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
SYMBOL PARAMETER
t_PHL/ t_PLH
t_PHL/ t_PLH
t_PHL
t_THL/ t_TLH
propagation delay
nCP to nQ₀
propagation delay
nQ_n to nQ_n+1
propagation delay
nMR to nQ_n
output transition time
T_amb (°C)
TEST CONDITIONS
74HCT
+25
−40 to +85
−40 to +125
UNIT _VCC WAVEFORMS
(V)
min. typ. max. min. max. min. max.
15 25
31
38
ns 4.5 Fig.7
6 10
13
15
ns 4.5 Fig.7
18 32
40
48
ns 4.5 Fig.8
7 15
19
22
ns 4.5 Fig.7
t_W
clock pulse width
HIGH or LOW
19 11
t_W
master reset pulse
width; HIGH
16 6
t_rem
removal time
nMR to nCP
50
f_max
maximum clock pulse
27 48
frequency
24
29
20
24
5
5
22
18
ns 4.5 Fig.7
ns 4.5 Fig.8
ns 4.5 Fig.8
MHz 4.5 Fig.7
December 1990
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