?2004 fairchild semiconductor corporation www.fairchildsemi.com rev. 1.0.1 features ? replaces two ka555 timers ? operates in both astable and monos table modes ? high output current ? ttl compatible ? timing from microsecond to hours ? adjustable duty cycle ? temperature stability of 0.005% per c 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 description the ka556 series dual monolithic timing circuits are a highly stable controller capab le 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 v cc and ground. the circuits may be triggered and reset on falling waveforms. the output structures may sink or source 200ma. 14-dip 1 14-sop 1 internal block diagram comparator flip flop comparator comparator comparator flip flop output output 314 6 12 11 5 10 9 13 7 4 5 1 2 control voltage v cc trigger threshold control voltage trigger reset output discharge gnd reset output r r r r r r threshold discharge ka556 dual timer
ka556 2 absolute maximum ratings (t a = 25 c) parameter symbol value unit supply voltage v cc 16 v lead temperature (soldering 10sec) t lead 300 c power dissipation p d 600 mw operating temperature range ka556/ka556i t opr 0 ~ +70 / -40 ~ +85 c storage temperature range t stg -65 ~ +150 c
ka556 3 electrical characteristics (t a = 25 c, v cc = 5 ~ 15v, unless otherwise specified) notes: 1. supply current when output is high is typically 1.0ma less at v cc = 5v 2. tested at v cc = 5v and v cc = 15v 3. this will determine the maximum value of r a + r b 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 perfo rmance characteristics of each timer section in the monostable mode. 5. as reset voltage lowers, timing is inhibited and then the output goes low. parameter symbol conditions min. typ. max. unit supply voltage v cc -4.5-16v supply current * 1 (two timers) (low state) i cc v cc = 5v, r l = v cc = 15v, r l = - 5 16 12 30 ma ma timing error * 2 (monos table) initial accuracy drift with temperature drift with supply voltage accur ? t/ ? t ? t/ ? v cc r a = 2k ? to 100k ? c = 0.1 f t = 1.1rc - 0.75 50 0.1 - % ppm/ c %/v control voltage v cc v cc = 15v 9.0 10.0 11.0 v v cc = 5v 2.6 3.33 4.0 v threshold voltage v th v cc = 15v 8.8 10.0 11.2 v v cc = 5v 2.4 3.33 4.2 v threshold current* 3 i th - - 30 250 na trigger voltage v tr v cc = 15v 4.5 5.0 5.6 v v cc = 5v 1.1 1.6 2.2 v trigger current i tr v tr = 0v - 0.01 2.0 a reset voltage* 5 v rst -0.40.61.0v reset current i rst - - 0.03 0.6 ma low output voltage v ol v cc = 15v i sink = 10ma i sink = 50ma i sink = 100ma i sink = 200ma v cc = 5v i sink = 8ma i sink = 5ma - 0.1 0.4 2.0 2.5 0.25 0.15 0.25 0.75 3.2 0.35 0.25 v v high output voltage v oh v cc = 15v i source = 200ma i source = 100ma 12.75 12.5 13.3 -v v cc = 5v i source = 100ma 2.75 3.3 - v rise time of output t r - - 100 300 ns fall time of output t f - - 100 300 ns discharge leakage current i lkg - - 10 100 na matching characteristics* 4 initial accuracy drift with temperature drfit with supply voltage accur ? t/ ? t ? t/ ? v cc -- 1.0 10 0.2 2.0 0.5 % ppm/ c %/v timing error (astable)* 2 initial accuracy drift with temperature drift with supply voltage accur ? t/ ? t ? t/ ? vcc v cc = 15v r a ,r b = 1k ? to 100k ? c = 0.1 f - 2.25 150 0.3 - % ppm/ c %/v
ka556 4 mechanical dimensions package dimensions in millimeters 6.40 0.20 7.62 0.300 2.54 0.100 # 1 # 7 #8 #14 0.252 0.008 0~15 0.25 +0.10 ?.05 0.010 +0.004 ?.002 3.30 0.30 0.130 0.012 3.25 0.20 0.128 0.008 19.40 0.20 0.764 0.008 19.80 0.780 max 5.08 0.200 0.20 0.008 max min 2.08 0.082 ( ) 0.46 0.10 0.018 0.004 0.059 0.004 1.50 0.10 14-dip
ka556 5 mechanical dimensions (continued) package dimensions in millimeters 8.56 0.20 0.337 0.008 1.27 0.050 5.72 0.225 1.55 0.10 0.061 0.004 0.05 0.00 2 6.00 0.30 0.236 0.012 3.95 0.20 0.156 0.008 0.60 0.20 0.024 0.008 8.70 0.343 max #1 #7 #8 0~8 #14 0.47 0.019 () 1.80 0.071 max0.10 max0.004 max min + 0.10 -0.05 0.20 + 0.004 -0.002 0.008 + 0.10 -0.05 0.406 + 0.004 -0.002 0.016 14-sop
ka556 10/5/04 0.0m 001 stock#dsxxxxxxxx ? 2004 fairchild semiconductor corporation 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 lif e, 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. 2. a critical component in an y component of a life support device or system whose fa ilure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com disclaimer fairchild semiconductor reserves the right to make changes with out further notice to any products herein to improve re liability, function or design. fairchild does not assume any liability arising out of the applic ation or use of any product or circuit described herein; neither does it convey any license under its pat ent rights, nor the rights of others. ordering information product number package operating temperature ka556 14-dip 0 ~ +70 c ka556d 14-sop ka556i 14-dip -40 ~ +85 c ka556id 14-sop
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