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NE556 Datasheet(PDF) 4 Page - Texas Instruments |
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NE556 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 5 page  NE556, SA556, SE556 DUAL PRECISION TIMERS SLFS023C – APRIL 1978 – REVISED DECEMBER 1999 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 operating characteristics, VCC = 5 V and 15 V PARAMETER TEST NE556, SA556 SE556 UNIT PARAMETER CONDITIONS† MIN TYP MAX MIN TYP MAX UNIT ‡ Each timer, monostable§ 1 3 0.5 1.5 Initial error of timing interval‡ Each timer, astable¶ TA = 25°C 2.25% 1.5% g Timer 1 — Timer 2 ±1 ±0.5 Tt ffi i t f Each timer, monostable§ 50 30 100 Temperature coefficient of timing interval Each timer, astable¶ TA = MIN to MAX 150 90 ppm/ °C timing interval Timer 1 — Timer 2 ±10 ±10 S l lt iti it f Each timer, monostable§ 0.1 0.5 0.05 0.2 Supply voltage sensitivity of timing interval Each timer, astable¶ TA = 25°C 0.3 0.15 %/ V timing interval Timer 1 — Timer 2 ±0.2 ±0.1 Output pulse rise time CL = 15 pF, 100 300 100 200 ns Output pulse fall time L TA = 25°C 100 300 100 200 ns † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. ‡ Timing interval error is defined as the difference between the measured value and the average value of a random sample from each process run. § Values specified are for a device in a monostable circuit similar to Figure 2, with component values as follow: RA = 2 kΩ to 100 kΩ, C = 0.1µF. ¶ Values specified are for a device in an astable circuit similar to Figure 1, with component values as follow: RA = 1 kΩ to 100 kΩ, C = 0.1µF. APPLICATION INFORMATION RB C RA Open (see Note A) RL OUT VCC (5 V to 15 V) VCC CONT RESET DISCH THRES TRIG GND OUT NOTE A: Bypassing the control-voltage input to ground with a capacitor may improve operation. This should be evaluated for individual applications. Figure 1. Circuit for Astable Operation RA RL OUT VCC (5 V to 15 V) VCC CONT RESET DISCH THRES TRIG GND OUT INPUT 0.01 µF Figure 2. Circuit for Monostable Operation C |
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