ITT - Index of

ITT54190, ITT54191, ITT74190, ITT74191
SYNCHRONOUS UP1DOWN COUNTERS WITH
DOWN/UP MODE CONTROL
E LECTR I CAL C H ARACTE RISTI CS. over recommended operating free-air temperatu re range
(unless othelWise noted)
ITT54190.ITT54191 ITT74190. ITT74191
Parameter Min Typ 1 Max Min Typl Max Unit Test Conditions 2
VIH High-level input 2 2 V Vee =MIN
voltage
VIL Low-level input 0.8 0.8 V Vee = MIN
voltage
VI Input clamp voltage -1.5 -1.5 V Vee = MIN. II = -12mA
VOH High-level output 2.4 2.4 V Vee = MIN. VIH = 2V.
voltage
VIL = 0.8V. 10H = -800uA
VOL Low-level output 0.4 0.4 V Vee = MIN. VIH = 2V.
voltage
VIL '= 0.8V. 10L = 16mA
II High-level input 1 1 mA Vee = MAX. VI = 5.5V
current at maximum
input voltage
IIH High-level input 40 40 uA Vee = MAX. VI = 2.4V
current at any input
except enable
IIH High-level input 120 120 uA Vee = MAX. VI = 2.4V
current at enable
input
IlL Low;level input -1.6 -1.6 mA Vee = MAX. VI = 0.4V
current at any input
e>«:ept enable
IlL Low-level input -4.8 -4.8 mA Vee = MAX. VI = 0.4V
current at enable
input
lOS Short-circuit output -20 -65 -18 -65 mA Vee = MAX
current 3
ICC Su pply current 65 105 65 105 mA Vee = MAX. See Note 2
1 All typicalvalues are atVee = 5V. TA = 25°e. .
2 For conditions shown as MAX or MIN. use appropriate value specified under recommended operating conditions for
the applicable device type.
3 Not more than one output should be shorted at a time.
Note
2: ICC is measured with all inputs grounded and all outputs open.
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