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NE556N Datasheet(PDF) 2 Page - Texas Instruments |
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NE556N Datasheet(HTML) 2 Page - Texas Instruments |
2 / 5 page NE556, SA556, SE556 DUAL PRECISION TIMERS SLFS023C – APRIL 1978 – REVISED DECEMBER 1999 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 FUNCTION TABLE (each timer) RESET TRIGGER VOLTAGE† THRESHOLD VOLTAGE† OUTPUT DISCHARGE SWITCH Low Irrelevant Irrelevant Low On High < 1/3 VDD Irrelevant High Off High > 1/3 VDD > 2/3 VDD Low On High > 1/3 VDD > 2/3 VDD As previously established † Voltage levels shown are nominal. functional block diagram, each timer R1 R S 1 OUT RESET VCC CONT R R R GND DISCH THRES TRIG RESET can override TRIG, which can override THRES. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡ Supply voltage, VCC (see Note 1) 18 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage (CONT, RESET, THRES, and TRIG) VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output current ±225 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous total dissipation See Dissipation Rating Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Package thermal impedance, θJA (see Note 2): D package 86 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N package 80 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J package 300 °C . . . . . . . . . . . . . . . . . . . . . Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D or N package 260 °C . . . . . . . . . . . . . . . . Storage temperature range, Tstg –65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ‡ Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values are with respect to network ground terminal. 2. The package thermal impedance is calculated in accordance with JESD 51. DISSIPATION RATING TABLE PACKAGE TA ≤ 25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING TA = 85°C POWER RATING TA = 125°C POWER RATING J 1375 mW 11.0 mW/ °C 880 mW 715 mW 275 mW |
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