ITT - Index of

ITT5492, ITT7492
DIVIDE-BY-TWELVE COUNTERS
absolute maximum ratings over operating temperature
range (unless otherwise noted)
Supply Voltage VCC (See Note 4) ............... " .......... 7V
Input Voltage Vin (See Notes 4 and 5) ., ............. 5.5V
Operating Free-Air Temperatu re Range:
ITT5492 Circuits ........................... ~55°C to 125"C
ITT7492 Circuits .................................... ooC to 10°C
Storage Temperature Range ......... -65°C to 150°C
Notes:
4. These voltage values a re with respect to
network ground terminal.
5. Input signals must be zero or positive with
respect to network ground terminal.
recommended operating conditions
Supply Voltage V CC (See Note 4): JTT5492 Circuits ...;................................... 4.5
ITT7492 Circuits ....................................... 4.75
Normalized Fan- Out from Each Output (See Note 6) .......................................
Width of Input Count Pulse, tp(in) ...................................................................... .
Width of Reset Pulse. tp(reset) ........ ; ................................................................... .
Min
50
50
Nom Max
Unit
5 5.5 V
5 5.25 V
10
ns
ns
Note:
6. Fan-out from output A to input BC and to 10 additional Series 54174 loads is permitted.
ELECTR ICAL CHARACTERISTICS over recommended operating free-air temperature range
(unless otherwise noted)
Parameter Min Typ' Max Unit Test Conditions 2
Vin(l ) Input voltage required to ensure 2 V
logical 1 at any input terminal
Vin(O) Input voltage required to ensure· O.S V
logical 0 at any input terminal
V l Input Clamp Voltage ~1.5 V Vce = Min Ii = -12 mA
Vout(l ) Logical 1 output voltage 2.4 V VCC == MIN,
lioad = ..... 400 uA
Vout(O) Logical 0 output voltage .•..• O .. ~ V ;;,. YCj::= ~,IN, Isink '= .. 16 ITlA
lin(l ) Logical 1 level input current at .co,. 4b uA Yec:M~X, Yin ==2.4V
'"
RO( 1) or RO(2) inputs
1 mA
.... ..
•. Vet"" ~AX'Vil) =5.5V
..
lin(1) Logical 1 level input current at 8b . uA . VCO.",MA>t Vin ,=2.4v
input A
rnA
Y