KA555 Fairchild Semiconductor, KA555 Datasheet
KA555
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KA555 Summary of contents
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... Fairchild Semiconductor Corporation Description Description Description Description The KA555 is a highly stable controller capable of producing accurate timing pulses. With a monostable operation, the time delay is controlled by one external resistor and one capacitor. With an astable operation, the frequency and duty cycle are accurately controlled by two external resistors and one capacitor ...
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... KA555 KA555 KA555 KA555 Absolute Maximum Ratings (T Absolute Maximum Ratings (T Absolute Maximum Ratings (T Absolute Maximum Ratings (T Parameter Parameter Parameter Parameter Supply Voltage Lead Temperature (Soldering 10sec) Power Dissipation Operating Temperature Range KA555/KA555I Storage Temperature Range Symbol Symbol Symbol Symbol LEAD +70 / -40 ~ +85 ...
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... SOURCE I = 100mA SOURCE 100mA SOURCE LKG = 5V for 15V operation, the max. total R = 20M , and for 5V operation, the max KA555 KA555 KA555 KA555 Min. Min. Min. Min. Typ. Typ. Typ. Typ. Max. Max. Max. Max. Unit Unit Unit Unit 4 7 1.0 3 ...
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... KA555 KA555 KA555 KA555 Application Information Application Information Application Information Application Information Table1 below is the basic operating table of 555 timer: Threshold Voltage Threshold Voltage Threshold Voltage Threshold Voltage Trigger Voltage Trigger Voltage Trigger Voltage Trigger Voltage ( )(Pin6) )(Pin6) )(Pin6) )(Pin6 Don't care V > ...
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... Figure 6. Capacitance and Resistance vs. Frequency Figure 6. Capacitance and Resistance vs. Frequency Figure 6. Capacitance and Resistance vs. Frequency *C and reaches 2Vcc the longer it takes +2R +2R +2R + 100 100 10k 10k 100k 100k 100 100 10k 10k 100k 100k Fr equency(Hz) Fr equency(Hz) Fr equency(Hz) Fr equency(Hz) KA555 KA555 KA555 KA555 ...
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... KA555 KA555 KA555 KA555 Figure 7. Waveforms of Astable Operation Figure 7. Waveforms of Astable Operation Figure 7. Waveforms of Astable Operation Figure 7. Waveforms of Astable Operation An astable timer operation is achieved by adding resistor R operation, the trigger terminal and the threshold terminal are connected so that a self-trigger is formed, operating as a multi vibrator ...
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... the amount of time it takes for the (10) C =0.693(R + because the period is the sum of the charge time and discharge KA555 KA555 KA555 KA555 (t) to reach Vcc/ ...
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... KA555 KA555 KA555 KA555 Figure 8. Waveforms of Frequency Divider Operation Figure 8. Waveforms of Frequency Divider Operation Figure 8. Waveforms of Frequency Divider Operation Figure 8. Waveforms of Frequency Divider Operation 4. Pulse Width Modulation 4. Pulse Width Modulation 4. Pulse Width Modulation 4. Pulse Width Modulation The timer output waveform may be changed by modulating the control voltage applied to the timer's pin 5 and changing the reference of the timer's internal comparators ...
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... Figure 12. Waveforms of pulse position modulation Figure 12. Waveforms of pulse position modulation Figure 12. Waveforms of pulse position modulation Figure 12. Waveforms of pulse position modulation +Vcc Figure 14. Waveforms of Linear Ramp Figure 14. Waveforms of Linear Ramp Figure 14. Waveforms of Linear Ramp Figure 14. Waveforms of Linear Ramp 13 =0.7V, BE KA555 KA555 KA555 KA555 ...
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... KA555 KA555 KA555 KA555 constant current generated by PNP transistor and resistors. Hence, the linear ramp function as shown in Figure 14. The gradient S of the linear ramp function is defined as C follows – Here the Vp-p is the peak-to-peak voltage. If the electric charge amount accumulated in the capacitor is divided by the capacitance, the V ...
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... Mechanical Dimensions Mechanical Dimensions Package Package Package Package 6.40 0.20 0.252 0.008 # 7.62 0.300 Dimensions in millimeters Dimensions in millimeters Dimensions in millimeters Dimensions in millimeters 8-DIP 5.08 MAX 0.200 3.40 0.33 0.20 0.013 0.134 0.008 KA555 KA555 KA555 KA555 3.30 0.30 0.130 0.012 MIN ...
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... KA555 Mechanical Dimensions Package #1 #4 6.00 0.236 3.95 0.156 0.50 0.20 0.020 0.008 12 (Continued) 8-SOP 1.55 0.20 0.061 0.008 #8 #5 0.30 1.80 MAX 0.012 0.071 0.20 0.008 5.72 0.225 Dimensions in millimeters 0.1~0.25 MIN 0.004~0.001 ...
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... Ordering Information Product Number Package KA555 KA555D KA555I KA555ID 8-SOP Operating Temperature 8-DIP 0 ~ +70 C 8-SOP 8-DIP -40 ~ +85 C KA555 13 ...
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... KA555 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...