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Product Overview

The SE555P is a Precision Timer capable of producing accurate time delay or oscillation. In the mono-stable mode of operation the timed interval is controlled by a single external resistor and capacitor network. In the a-stable 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 2/3rd and 1/3rd respectively of VCC. 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. When RESET goes low the flip-flop is reset and the output goes low. When the output is low a low-impedance path is provided between discharge and ground.
  • Timing from microseconds to hours
  • Adjustable duty cycle
  • TTL-compatible output can sink or source up to 200mA
  • Green product and no Sb/Br


Clock & Timing; Sensing & Instrumentation; Communications & Networking
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Product Information

  • Frequency -
  • Supply Voltage Min 4.5V
  • Supply Voltage Max 18V
  • Digital IC Case DIP
  • No. of Pins 8Pins
  • Operating Temperature Min -55°C
  • Operating Temperature Max 125°C
  • Packaging Each
  • Operating Mode Astable, Monostable
  • No. of Timers 1
  • MSL -
  • Supply Voltage Range 4.5V to 18V
  • SVHC No SVHC (15-Jun-2015)
  • CAD CadSoft_EAGLE (2.55KB) EN
  • Availability

    Availability:  1,069

    • 1,069 in stock for same day shipping
    Check stock and lead times
      More stock available week commencing 6/20/16

    Price for: Each

    Minimum order quantity: 1

    Order multiple quantity: 1

    Price: $0.438 $0.438



    Quantity List Price
    1 - 9 $0.438
    10 - 99 $0.339
    100 - 999 $0.184
    1000 - 2499 $0.138
    2500 - 9999 $0.119
    10000 - 24999 $0.111
    25000 - 49999 $0.102
    50000+ $0.098

    Legislation and Environmental

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