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| www.fairchildsemi.com KA556 Dual Timer Features * * * * * * * Replaces Two KA555 Timers Operates in Both Astable And Monostable Modes High Output Current TTL Compatible Timing From Microsecond To Hours Adjustable Duty Cycle Temperature Stability Of 0.005% Per C Description The KA556 series dual monolithic timing circuits are a highly stable controller capable of producing accurate time delays or oscillation. The KA556 is a dual KA555. Timing is provided an external resistor and capacitor for each timing function. The two timers operate independently of each other, sharing only VCC and ground. The circuits may be triggered and reset on falling waveforms. The output structures may sink or source 200mA. 14-DIP 14-SOP Applications * * * * * * * * * * Precision Timing Pulse Shaping Pulse Width Modulation Frequency Division Traffic Light Control Sequential Timing Pulse Generator Time Delay Generator Touch Tone Encoder Tone Burst Generator 1 1 Internal Block Diagram Rev. 1.0.0 (c)2001 Fairchild Semiconductor Corporation KA556 Absolute Maximum Ratings (TA = 25C) Parameter Supply Voltage Lead Temperature (soldering 10sec) Power Dissipation Operating Temperature Range KA556 Storage Temperature Range Symbol VCC TLEAD PD TOPR TSTG Value 16 300 600 0 ~ + 70 - 65 ~ + 150 Unit V C mW C C 2 KA556 Electrical Characteristics (TA = 25C, VCC = 5 ~ 15V, unless otherwise specified) Parameter Supply Voltage Supply Current *1(two timers) (low state) Timing Error *2(monostable) Initial Accuracy Drift with Temperature Drift with Supply Voltage Control Voltage Threshold Voltage Threshold Current*3 Trigger Voltage Trigger Current Reset Voltage*5 Reset Current Symbol VCC ICC ACCUR t/T t/VCC VC VTH ITH VTR ITR VRST IRST VCC = 15V VCC = 5V VTR = 0V VCC = 15V ISINK = 10mA ISINK = 50mA ISINK = 100mA ISINK = 200mA VCC = 5V ISINK = 8mA ISINK = 5mA VCC = 15V ISOURCE = 200mA ISOURCE = 100mA VCC = 5V ISOURCE = 100mA Rise Time of Output Fall Time of Output Discharge Leakage Current Matching Characteristics*4 Initial Accuracy Drift with Temperature Drfit with Supply Voltage Timing Error (astable)*2 Initial Accuracy Drift with Temperature Drift with Supply Voltage tR tF ILKG ACCUR t/T t/VCC ACCUR t/T t/Vcc Conditions VCC = 5V, RL = VCC = 15V, RL = RA = 2K to 100K C = 0.1F T = 1.1RC VCC = 15V VCC = 5V VCC = 15V VCC = 5V Min. 4.5 Typ. 5 16 0.75 50 0.1 10.0 3.33 10.0 3.33 30 5.0 1.6 0.01 0.6 0.03 0.1 0.4 2.0 2.5 0.25 0.15 12.5 13.3 3.3 100 100 10 1.0 10 0.2 2.25 150 0.3 Max. 16 12 30 11.0 4.0 11.2 4.2 250 5.6 2.2 2.0 1.0 0.6 0.25 0.75 3.2 0.35 0.25 300 300 100 2.0 0.5 Unit V mA mA % ppm/C %/V V V V V nA V V A V mA V 9.0 2.6 8.8 2.4 4.5 1.1 0.4 - Low Output Voltage VOL - V V High Output Voltage VOH 12.75 2.75 - V ns ns nA % ppm/C %/V % ppm/C %/V VCC = 15V RA,RB = 1K to 100K C = 0.1F - Notes: *1. Supply current when output is high is typically 1.0mA less at VCC = 5V *2. Tested at VCC = 5V and VCC = 15V *3. This will determine the maximum value of RA + RB for 15V operation. The maximum total R = 20M, and for 5V operation the maximum total R = 6.6M. *4. Matching characteristics refer to the difference between performance characteristics of each timer section in the monostable mode. *5. As reset voltage lowers, timing is inhibited and then the output goes low. 3 KA556 Mechanical Dimensions Package 14-DIP 6.40 0.20 0.252 0.008 19.80 MAX 0.780 19.40 0.20 0.764 0.008 #7 #8 7.62 0.300 3.25 0.20 0.128 0.008 0.20 0.008 MIN 5.08 MAX 0.200 3.30 0.30 0.130 0.012 0.25 -0.05 +0.10 0~15 0.010 -0.002 +0.004 4 2.54 0.100 0.46 0.10 0.018 0.004 1.50 0.10 0.059 0.004 #1 #14 ( 2.08 ) 0.082 KA556 Mechanical Dimensions (Continued) Package 14-SOP MIN 1.55 0.10 0.061 0.004 0.05 0.002 0.47 ) 0.019 MAX0.10 MAX0.004 1.27 0.050 0.016 -0.002 0.406 +0.004 +0.10 -0.05 #1 #14 8.70 MAX 0.343 #7 6.00 0.30 0.236 0.012 #8 1.80 MAX 0.071 +0.004 0.008 -0.002 +0.10 -0.05 0.20 3.95 0.20 0.156 0.008 0.60 0.20 0.024 0.008 5.72 0.225 0~ 8 8.56 0.20 0.337 0.008 ( 5 KA556 Ordering Information Product Number KA556 KA556D KA556I KA556ID Package 14-DIP 14-SOP 14-DIP 14-SOP 0 ~ + 70C Operating Temperature 6 KA556 7 KA556 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. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. www.fairchildsemi.com 5/22/01 0.0m 001 Stock#DSxxxxxxxx 2001 Fairchild Semiconductor Corporation 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. |
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