SA555DR

• Single Precision Timer of the 555 Type in an 8-Pin SOIC Package
• Supply Range of 4.5V to 16V, Spanning 5V, 9V, and 12V Rails
• Operates at Frequencies Up to 100 Kilohertz
• Output Rated for 200mA of Low-Level Sink Current and 200mA of High-Level Source Current
• Gold Contact plating, Supplied on Tape and reel, Lead Free and RoHS Compliant
• Rated -40°C to 85°C with a 150°C Maximum Junction Temperature

The Texas Instruments SA555DR is a single precision timer of the widely used 555 type, supplied in an 8-pin SOIC package. It operates from a 4.5V to 16V supply, works at frequencies up to 100 kilohertz, and both sources and sinks 200mA at its output. The SA555DR ships on tape and reel and is specified from -40°C to 85°C with a 150°C maximum junction temperature.

A 555 timer is wired either as a monostable, producing one output pulse whose length is set by a single resistor and capacitor, or as an astable oscillator producing a continuous square wave. That makes it the default answer for time delays, pulse generation and stretching, pulse-width modulation, frequency division, missing-pulse detection, tone generation, and simple flashers and beepers. With 200mA of output drive in both directions, the SA555DR can operate a relay coil, a solenoid, or a small lamp directly without a buffer transistor. Typical buyers are industrial and consumer product designers, along with the education and maker markets where the 555 remains a teaching standard.