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| M74HC688 Datasheet, PDF (5/9 Pages) STMicroelectronics – 8 BIT EQUALITY COMPARATOR | |||
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M74HC688
CAPACITIVE CHARACTERISTICS
Test Condition
Value
Symbol
Parameter
VCC
(V)
TA = 25°C
-40 to 85°C -55 to 125°C Unit
Min. Typ. Max. Min. Max. Min. Max.
CIN Input Capacitance
5 10
10
10 pF
CPD Power Dissipation
Capacitance (note
32
pF
1)
1) CPD is defined as the value of the ICâs internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC
TEST CIRCUIT
CL = 50pF/150pF or equivalent (includes jig and probe capacitance)
RT = ZOUT of pulse generator (typically 50â¦)
WAVEFORM : PROPAGATION DELAY TIME (f=1MHz; 50% duty cycle)
5/9
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