74190 IC Up/Down Decade Counter DIP-16
The 74190 IC Up/Down Decade Counter DIP-16 5V TTL Logic is a synchronous BCD (8421) decade counter designed for digital counting, timing, and control applications. The device is based on the SN74LS190N architecture, providing reliable TTL performance and flexible counting functionality.
Features:
- Counts 8-4-2-1 BCD or Binary
- Single Down/Up Count Control Line
- Count Enable Control Input
- Ripple Clock Output for Cascading
- Asynchronously Presettable with Load Control
- Parallel Outputs
- Cascadable for n-Bit Applications
Specifications:
| Logic Type | BCD Counter |
| Counting Direction | Up Counter, Down Counter |
| Trigger Type | Rising Edge |
| Timing Mode | Synchronous |
| Reset Mode | Asynchronous |
| Number of Elements | 1 |
| Count Rate | 28MHz |
| Propagation Delay (tpd) | 21ns |
| Supply Voltage | 2V to 6V |
| Operating Temperature | -20°C to +85°C |
| Package / Case | DIP-16 |
| Mounting Type | Through Hole |
74LS190 Pinout Diagram
74LS190 Pin Description
| Pin No | Pin Name | Description |
| 1 | P1 | Parallel Data Input |
| 2 | Q1 | Flip-Flop Output |
| 3 | Q0 | Flip-Flop Output |
| 4 | CE’ | Count Enable (Active LOW) Input |
| 5 | U/D | Up/Down Count Control Input |
| 6 | Q2 | Flip-Flop Output |
| 7 | Q3 | Flip-Flop Output |
| 8 | GND | Ground |
| 9 | P3 | Parallel Data Input |
| 10 | P2 | Parallel Data Input |
| 11 | PL’ | Parallel Load Control (Active LOW) Input |
| 12 | TC | Terminal Count Output |
| 13 | RC’ | Ripple Clock Output |
| 14 | CP | Clock Pulse (Active HIGH going edge) Input |
| 15 | P0 | Parallel Data Input |
| 16 | VCC | Positive Supply |
Footprint
Applications:
- Digital counters and timers.
- Frequency division circuits.
- BCD counting systems.
- Digital clocks and display systems.
- Industrial automation and control logic.
- Embedded digital electronics projects.
Package Include:
1x 74190 IC Up/Down Decade Counter DIP-16