NE555 Timer IC

The NE 555 P timer IC is a precision timing circuit capable of producing accurate time delays or oscillation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor.

The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC. These levels can be altered by the use of the control voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set, and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low.

Specifications:

• Package : Tube
• Type: Timer/Oscillator (Single)
• Frequency: 100kHz
• Voltage - Supply: 4.5V ~ 16V
• Current - Supply: 10 mA
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 8-DIP (0.300", 7.62mm) 
• Brand: Texas Instruments

Working Modes:

• Astable mode
• Mono-stable mode
• Bi-stable mode

Features:

• Timing from microseconds through hours
• Operates in both stable and monostable modes
• Adjustable duty cycle
• Output can source or sink 200 mA
• Output and supply TTL compatible
• Normally on and normally off output
• Available in 8-pin MSOP package

Applications:

• Precision timing
• Pulse generation
• Sequential timing
• Time delay generation
• Pulse width modulation
• Pulse position modulation
• Linear ramp generator