ITT - Index of

ITT54190, ITT54191, ITT74190, ITT74191
SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP
MODE CONTROL
SWITCHING CHARACTERISTICS, Vee = 5V. TA = 25°e. N = 10
From
To
Parameter' (Input) (Output) Min
Typ
Max
Unit
Test Conditions
t max 20
25
MHz
CL = 15pF.RL =400rl
tpLH Load Ok 0B' DC,
tpHL
°D
22
33
33 ns
50
CL = 15 pF. RL = 400rl
tpLH Data A. B. C. 0A' 0B' DC,
tpHL
D
°D
14
35
22 ns
50
CL = 15 pF. RL = 400rl
tpLH Clock Ripple Clock
13
20 ns
CL = 15 pF. RL = 400rl
tpHL
16
24
tpLH Clock Ok 0B' 0C-
16
24 ns
CL = 15pF. RL = 400rl
tpHL °D
24
36
tpLH Clock Max/Min
28
42 ns
CL = 15 pF. RL = 400rl
tpHL
37
52
tpLH Down/Up Ripple Clock
30
45 ns
CL = 15 pF. RL = 400rl
tpHL
30
45
tpLH Down/Up Max/Min
21
33 ns
CL = 15pF.RL =400rl
tpHL
22
33
, t max = maximum clock frequency
tpLH = propagation delay time. low-to-high-Ievel output
tpHL = propagation delay time. high-to-Iow-Ievel output
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