Catalog > Semiconductors > Integrated Circuits 74LS290 IC 4-Bit Binary Counter Decade IC DIP-14 Part No: 74LS290 4.09 ZAR inc for 1 Each (Quoting) Add to Cart Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Specifications Supply Voltage : 4.75 - 5.25V Input HIGH Voltage : 2.0V Input LOW Voltage : 0.8V Input Clamp Diode Voltage : -1.5V Output LOW Voltage : 0.5V Short Circuit Current : -100mA