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Functional Description

The 96S02 dual retriggerable resettable monostable multi-

vibrator has tow DC coupled trigger inputs per function,

one active LOW (I0) and one active HIGH (I1). The I1 input

utilizes an internal Schmitt trigger with hysteresis of 0.3V to

provide increased noise immunity. The use of active HIGH

and LOW inputs allows wither rising or falling edge trigger-

ing and optional non-retriggerable operation. The inputs

are DC coupled making triggering independent of input

transition times. When input conditions for triggering are

met the Q output goes HIGH and the external capacitor is

rapidly discharged and then allowed to recharge. An input

trigger which occurs during the timing cycle will retrigger

the circuit and result in Q remaining HIGH. The output

pulse may be terminated (Q to the LOW state) at any time

by setting the Direct Clear input LOW. Retriggering may be

inhibited by tying the Q output to I0 or the Q output to I1.

Differential sensing techniques are used to obtain excellent

stability over temperature and power supply variations and

a feedback Darlington capacitor discharge circuit mini-

mizes pulse width variation from unit to unit. Schottky TTL

output stages provide high switching speeds and output

compatibility with all TTL logic families.

Block Diagram