Highly Stable 555 Timer

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Product details

Parameters

VCC (Min) (V) 4.5 VCC (Max) (V) 16 Iq (Typ) (uA) 3000 Rating Catalog Operating temperature range (C) 0 to 70 open-in-new Find other Real-time clocks (RTCs) & timers

Package | Pins | Size

PDIP (P) 8 93 mm² 9.81 x 9.43 SOIC (D) 8 19 mm² 4.9 x 3.9 VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Real-time clocks (RTCs) & timers

Features

  • Direct Replacement for SE555/NE555
  • Timing from Microseconds through Hours
  • Operates in Both Astable and Monostable Modes
  • Adjustable Duty Cycle
  • Output Can Source or Sink 200 mA
  • Output and Supply TTL Compatible
  • Temperature Stability Better than 0.005% per °C
  • Normally On and Normally Off Output
  • Available in 8-pin VSSOP Package
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Description

The LM555 is a highly stable device for generating accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For a stable operation as an oscillator, the free running frequency and duty cycle are accurately controlled with two external resistors and one capacitor. The circuit may be triggered and reset on falling waveforms, and the output circuit can source or sink up to 200 mA or drive TTL circuits.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet LM555 Timer datasheet (Rev. D) Oct. 21, 2014
Application notes HS Load/Line Transient Jigs and App Rpt for Testing POL Regulators Apr. 30, 2013
Application notes AN-694 A DMOS 3A, 55V, H-Bridge: The LMD18200 (Rev. C) Apr. 26, 2013

Design & development

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CAD/CAE symbols

Package Pins Download
PDIP (P) 8 View options
SOIC (D) 8 View options
VSSOP (DGK) 8 View options

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