The IC 7490 Decade Counter is a TTL-based binary-coded decimal (BCD) counter designed to count from 0 to 9 before automatically resetting to zero. It integrates a divide-by-2 and a divide-by-5 counter section, allowing flexible use as a divide-by-10 or divide-by-n counter in digital systems. This IC is widely used in digital clocks, frequency dividers, and timer circuits where precise counting and synchronization are essential. The 7490 is fully compatible with TTL logic levels and can be cascaded with other counters to achieve multi-stage counting. Its compact 14-pin DIP package simplifies assembly in both educational and industrial digital applications, making it a reliable choice for frequency counting, event detection, and timing designs. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD
Features:
BCD decade counter that counts from 0–9 and resets automatically.
Contains independent divide-by-2 and divide-by-5 stages.
TTL-compatible logic for reliable high-speed operation.
Can be cascaded for multi-digit or extended counting applications.
Widely used in digital clocks, timers, and frequency dividers.
Available in standard 14-pin DIP package for easy prototyping.
RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD
Applications:
Digital clock circuits for seconds, minutes, or hours counting.
Frequency division in signal processing and waveform generators.
Timer and delay circuits in automation systems.
Event counters and display driving systems.
Sequential logic and digital learning kits.
RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD
| General Specifications |
| IC Type | BCD Decade Counter |
| Logic Family | TTL |
| Counting Range | 0–9 (Modulo-10) |
| Divide Sections | Divide-by-2 and Divide-by-5 |
| Supply Voltage | 4.75V – 5.25V |
| Logic Compatibility | TTL |
| Output Type | Binary-Coded Decimal (BCD) |
| Maximum Frequency | 30 MHz typical |
| Package Type | DIP-14 |
| Reset Function | Automatic after 9 |
| Operating Temperature Range | 0°C to +70°C |
| Typical Supply Current | 8 mA |
| Shipment Weight | 0.0016 kg |
| Shipment Dimensions | 4 × 3 × 3 cm |
Please allow 5% measuring deviation due to manual measurement.
RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD RoboticsBD
Package Includes:
1 x IC 7490 Decade Counter
