NE555DR
| Part Number | NE555DR |
|---|---|
| Manufacturer |
 Texas Instruments |
| Description | 555 Type Timer/Oscillator 1-ch IC 100kHz SOIC-8 |
| Product Group | Timer |
| MOQ | 2500 pcs |
| SPQ | 2500 pcs |
| Figure/Case | SOIC-8 |
| Package | T&R Pack |
| PDF Datasheet | |
| Ship From | Hong Kong |
| Shipment Way | DHL / Fedex / TNT / UPS / Others |
| Delivery Term | Ex-Works |
| Send RFQ | sales@signalhk.com |
The NE555 Timer IC, often simply referred to as the 555 Timer, is a highly versatile and widely used integrated circuit. Introduced in 1972 by Signetics, it has since become a staple in electronic projects and circuits due to its reliability and simplicity.
The NE555 can be configured in three main modes of operation: Astable, Monostable, and Bistable. It is used in applications such as pulse generation, timing circuits, oscillators, and flip-flop circuits.
| Feature | Details |
|---|---|
| Operating Voltage Range | 4.5V to 16V |
| Output Current | Up to 200mA |
| Low Power Consumption | Typical power consumption is 3mW at 5V |
| Frequency Range | Up to 500 kHz |
| Timing Accuracy | Typically ±1% |
| Temperature Range | 0°C to +70°C (NE555), -40°C to +85°C (SE555 for military applications) |
| Output Compatibility | Can drive TTL, CMOS, and relays |
| Adjustable Duty Cycle | Allows control of ON and OFF times in astable mode |
| Trigger Voltage Threshold | 1/3 of the supply voltage |
| Reset Pin | Allows external reset of the timer operation |
| Package Types | Available in DIP-8, SOIC-8, and other packages |
| Pin Count | 8 pins |
| Modes of Operation | Astable, Monostable, and Bistable |
| Cost-Effective | Widely available and affordable |
| Pin Number | Name | Description |
|---|---|---|
| 1 | GND | Ground (0V) |
| 2 | TRIG | Trigger input, starts the timing interval when voltage < 1/3 Vcc |
| 3 | OUT | Output of the timer |
| 4 | RESET | Resets the timer when a low signal is applied |
| 5 | CTRL | Control voltage, adjusts the threshold and trigger levels |
| 6 | THRS | Threshold input, ends timing when voltage > 2/3 Vcc |
| 7 | DISCH | Discharge pin, connected to the timing capacitor |
| 8 | VCC | Positive supply voltage (4.5V to 16V) |
Applications of NE555 Timer
The NE555 Timer is used in numerous applications, including but not limited to:
- Astable Mode Applications:
- • Pulse generation
- • LED and lamp flashers
- • Square wave generators
- • Clock generation
- Monostable Mode Applications:
- • Timer circuits
- • Frequency dividers
- • Pulse-width modulation (PWM) circuits
- • Debouncing switches
- Bistable Mode Applications:
- • Flip-flops
- • Logic signal latching
- • Toggle switches
Advantages of Using NE555 Timer IC
- Versatility : Supports a wide range of applications.
- Robustness : Can handle relatively high current loads.
- Availability : Readily available in various package types.
- Cost-Efficiency : Low-cost solution for timing and oscillation needs.
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