74LS190 Synchronous 4-Bit Up Down Counter IC
- Synchronous 4-Bit Up/Down Counters with Mode Control
- High-level input voltage:Â 2V
- Low-level input voltage:Â 0.8V
- High-level output current:Â -0.4mA
- Low-level output current:Â 8mA
- Input clamp voltage:Â -1.5V
- Maximum clock frequency:Â 20MHz
- Propagation delay time max:Â 65ns
- Supply voltage range:Â 4.75 to 5.25V
- Package:Â DIP-16