74LS197 Stage Presettable Ripple Counters IC
Modulo-16 binary counter with low power consumption and high counting rates.
- Supply Voltage: 4.75 - 5.25V
- Input HIGH Voltage: 2.0V
- Input LOW Voltage: 0.8V
- Input Clamp Diode Voltage: -1.5V
- Output HIGH Voltage: 3.5V
- Output LOW Voltage: 0.4V
- Short Circuit Current: -100mA
- Power Supply Current: 27mA
Top Features:
- Low Power Consumption - 80mW
- High Counting Rates - 70 MHz
- Choice of Counting Modes - BCD, Bi-Quinary, Binary
- Asynchronous Presettable
The 74LS197 contains divide-by-two and divide-by-eight sections which can be combined to form a modulo-16 binary counter. Low Power Schottky technology is used to achieve typical count rates of 70 MHz and power dissipation of only 80mW. The circuit types have a Master Reset (MR) input which overrides all other inputs and asynchronously forces all outputs LOW. A Parallel Load input (PL) overrides clocked operations and asynchronously loads the data on the Parallel Data inputs (Pn) into the flip-flops. This preset feature makes the circuits usable as programmable counters. The circuits can also be used as 4-bit latches, loading data from the Parallel Data inputs when PL is LOW and storing the data when PL is HIGH.
Package Includes: 1 X 74LS197 Stage Presettable Ripple Counters IC (74197) DIP-14 Package
Images are for illustration only; actual product may vary.