The SN74LS90DG4 is a versatile decade, divide-by-twelve, and binary counter from Texas Instruments. This integrated circuit is designed to provide a high-performance counting solution for a wide range of applications, from digital clocks to frequency division and event counting.
Key Features
- Counting Modes: The device includes three separate counters that can be configured as a decade counter, a 12-divider, or a binary counter, offering flexibility for various counting requirements.
- High-Speed Operation: The SN74LS90DG4 is built using low-power Schottky technology, allowing for high-speed operation which is crucial for timing-critical applications.
- Direct Clear: A direct clear input is provided to reset the counter to its zero state, ensuring precise control over the counting process.
- Multiple Package Options: The device is available in a standard 14-pin DIP (Dual In-line Package), making it easy to integrate into a wide range of electronic systems.
Applications
The SN74LS90DG4 is ideal for use in systems that require counting or timing functionality. Common applications include:
- Digital clocks and timers
- Frequency dividers
- Programmable counters
- Sequence generators
Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
4.75V to 5.25V |
| Count Frequency (Max) |
42 MHz |
| Operating Temperature |
0°C to 70°C |
| Logic Family |
LS |
The SN74LS90DG4 is a testament to Texas Instruments' commitment to delivering high-quality, reliable components for the electronics industry. Whether for professional or educational use, this counter chip is a solid choice for designers looking for a dependable and versatile counting solution.