NA555 NE555 SA555 SE555 SLFS022F MIL-PRF-38535 NE555P NE555D NE555DR NE555PSR

PRECISION TIMERS www.ti.com SLFS022F SEPTEMBER 1973 REVISED JUNE 2006 FEATURES · · Timing From

NA555 NA555, NE555 NE555, SA555 SA555, SE555 SE555 PRECISION TIMERS www.ti.com SLFS022F SLFS022F SEPTEMBER 1973 REVISED JUNE 2006 FEATURES · · Timing From Microseconds to Hours Astable or Monostable Operation · · Adjustable Duty Cycle TTL-Compatible Output Can Sink or Source up to 200 mA DESCRIPTION/ORDERING INFORMATION These devices are precision timing circuits 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 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. The reset (RESET) input can override all other inputs and can be used to initiate a new timing cycle. 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 (DISCH) and ground. The output circuit is capable of sinking or sourcing current up to 200 mA. Operation is specified for supplies of 5 V to 15 V. With a 5-V supply, output levels are compatible with TTL inputs. NA555 NA555.D OR P PACKAGE NE555 NE555.D, P, PS, OR PW PACKAGE SA555 SA555.D OR P PACKAGE SE555 SE555.D, JG, OR P PACKAGE (TOP VIEW) 1 8 2 7 3 6 4 5 VCC DISCH THRES CONT NC GND NC VCC NC NC TRIG NC OUT NC 4 3 2 1 20 19 18 5 17 6 16 7 15 14 9 10 11 12 13 8 NC DISCH NC THRES NC NC RESET NC CONT NC GND TRIG OUT RESET SE555 SE555.FK PACKAGE (TOP VIEW) NC No internal connection Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 19732006, Texas Instruments Incorporated On products compliant to MIL-PRF-38535 MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. NA555 NA555, NE555 NE555, SA555 SA555, SE555 SE555 PRECISION TIMERS www.ti.com SLFS022F SLFS022F SEPTEMBER 1973 REVISED JUNE 2006 ORDERING INFORMATION TA VTHRES MAX VCC = 15 V PACKAGE (1) PDIP P ORDERABLE PART NUMBER TOP-SIDE MARKING Tube of 50 NE555P NE555P Tube of 75 NE555D NE555D Reel of 2500 NE555DR NE555DR Reel of 2000 NE555PSR NE555PSR Tube of 150 NE555PW NE555PW Reel of 2000 NE555PWR NE555PWR Tube of 50 SA555P SA555P Tube of 75 SA555D SA555D Reel of 2000 SA555DR SA555DR Tube of 50 NA555P NA555P Tube of 75 NA555D NA555D Reel of 2000 NA555DR NA555DR Tube of 50 SE555P SE555P Tube of 75 SE555D SE555D Reel of 2500 SE555DR SE555DR CDIP JG Tube of 50 SE555JG SE555JG SE555JG SE555JG LCCC FK Tube of 55 SE555FK SE555FK SE555FK SE555FK SOIC D 0°C to 70°C 11.2 V SOP PS TSSOP PW PDIP P 40°C to 85°C 11.2 V SOIC D PDIP P 40°C to 105°C 11.2 V SOIC D PDIP P 55°C to 125°C (1) 10.6 SOIC D NE555P NE555P NE555 NE555 N555 N555 SA555P SA555P SA555 SA555 NA555P NA555P NA555 NA555 SE555P SE555P SE555D SE555D Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE RESET TRIGGER VOLTAGE (1) THRESHOLD VOLTAGE (1) OUTPUT DISCHARGE SWITCH Low Low On Irrelevant High Off >1/3 VDD >2/3 VDD Low On High 2 Irrelevant 1/3 VDD