The series of UC 3842, 3843, 3844 and 3845 Oscillators
can be used to generate sync pulses which no need to have a lot of
external components. As seen in the following circuit, it shows Sync
Pulse Generator Circuit Diagram of the UC3842/3/4/5.
pulse circuitry is useable to several hundred kilohertz with a minimum
of delays between master and slaves, according to the application note datasheet.