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  1. Parts
  2. /Components
  3. /Integrated circuits

555/556 Timer

OverviewAlternates
555/556 Timer - Pimoroni - 0704256797942

Through-hole 555 or 556 timer IC for monostable, astable, and bistable timing circuits. The 555 is a single-timer package; the 556 is a dual-timer in a DIP-14. Supply voltage typically 4.5–16V.

Parts tray full · 5 max · remove a part to add another
555/556 Timer — Pimoroni — 0704256797942

Offers

  • Pimoroni£0.90

Offers

  • Pimoroni£0.90

Pinout

Logical pinout · physical placement not verified
555/556 TIMERGNDCONTTRIGTHRESOUTDISCHRESETVCC
  • GND1
    Type · Ground
  • TRIG2
    Type · Signal
  • OUT3
    Type · Signal
  • RESET4
    Type · Control
  • CONT5
    Type · Signal
  • THRES6
    Type · Signal
  • DISCH7
    Type · Signal
  • VCC8
    Type · Power
PinPositionType
GND1Ground
TRIG2Signal
OUT3Signal
RESET4Control
CONT5Signal
THRES6Signal
DISCH7Signal
VCC8Power
Logical pinout · physical placement not verified
555/556 TIMERGNDCONTTRIGTHRESOUTDISCHRESETVCC

Pin details

8 connections
  1. GND
    Ground
    1
  2. TRIG
    Signal
    2
  3. OUT
    Signal
    3
  4. RESET
    Control
    4
  5. CONT
    Signal
    5
  6. THRES
    Signal
    6
  7. DISCH
    Signal
    7
  8. VCC
    Power
    8

Bare ICs

67 other options

74HC logic gates, MCP3008/MCP23017 ADCs and expanders, 24LC256 EEPROM, 4N25-series optocouplers and ULN2803A drivers — bare DIP chips with no breakout-board conveniences like pull-ups or level shifting.

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