BUY 74LS629 https://www.utsource.net/itm/p/98366.html
VOLTAGE-CONTROLLED OSCILLATORS
Description: The 74LS629 is a 16-pin DIP (dual in-line package) integrated circuit (IC) manufactured by Texas Instruments (TI). It is a programmable timer/counter with a built-in oscillator.
Features:
Programmable timer/counter
Built-in oscillator
16-pin DIP package
Operates from 4.75V to 5.25V
Low power consumption
TTL compatible
Applications:
Automotive
Industrial
Robotics
Home appliances
Security systems
Automated test equipment
(For reference only)