technical data 1 integral cmos general purpose timer the ilc555 is cmos rc timers providing significantly improved performance over the standard se/ne555 and 355 timers, while at the same time being direct replacements for those devices in most applications. improved parameters include low supply current, wide operating supply voltage range, low threshold, trigger and reset currents, no crowbarring of the supply current during output transitions, higher frequency performance and no requirement to decouple control voltage for stable operation. specifically, the ilc555 is stable controller capable of producing accurate time delays of frequencies. ? exact equivalent in most cases for se/ne555. ? low supply current. ? high speed operation ? 500 khz guaranteed. ? wide operation supply voltage range ? 2 to 18 volts. ? timing from microseconds through hours. ? operates in both astable and monostable modes. ? adjustable duty cycle. ? high output source/sink driver can drive ttl/cmos ilc555 n suffix plastic 1 8 ordering information ilc555n plastic izc555 chip t a = -20 to 70 c for the package pin assignment output trigger reset ilc555n discharge v cc 01 02 03 04 05 06 07 08 threshold control voltage gnd
ilc555 2 integral truth table threshold trigger reset output discharge xxll on > 2/3 ? v cc > 1/3 ? v cc hl on < 2/3 ? v cc > 1/3 ? v cc h stable stable x < 1/3 ? v cc hh off maximum ratings and recommended operating conditions recommended operating conditions maximum ratings value value parameter, unit symbol min max min max supply voltage, v v cc 2.0 18.0 0 18.0 output current, m i o - 20 - 100 input voltage, v v th, v trig, v rst ---0.3v cc +0.3 power dissipation, mw p d - - - 200 operating temperature, t opr -20 70 -20 85 storage temperature, t stg - - -65 150 lead temperature, 1 mm from case for 10 seconds, t solder - - 260
ilc555 3 integral dc electrical characteristics (voltages referenced to gnd) test conditions value parameter, units symbol i ol , i oh v cc, min max tempe- rature, threshold voltage, v v th 5.0 0.65 v cc 0.70 v cc 25 10 0.60 v cc 0.80 v cc -20, 70 trigger voltage, v v trig 5.0 0.31 v cc 0.36 v cc 25 10 0.28 v cc 0.40 v cc -20, 70 2.0 0.4 1.0 25 10 reset voltage, v v rst 18.0 2.0 0.2 1.5 -20, 70 18.0 control voltage lead, v v cv 0.65 v cc 0.69 v cc 25 10 0.60 v cc 0.80 v cc -20, 70 output voltage low, v v ol i ol = 3.2 m 5.0 0.4 25 10 i ol = 20 m 15.0 1.0 i ol = 3.2 m 5.0 0.6 -20, 70 i ol = 20 m 15.0 1.5 output voltage high, v v oh 5.0 4.0 25 10 i oh = -0.8 m 15.0 14.3 5.0 3.5 -20, 70 15.0 14.0 2.0 200 25 10 supply current, a i cc 18.0 300 2.0 400 -20, 70 18.0 600
ilc555 4 integral ac electrical characteristics test conditions value parameter, unit symbol r l , c l v cc, v min max tempe- rature, rise (fall) time of output, ns t thl , t tlh r l = 10 ? , c l = 10 pf 5.0 35 75 25 10 70 150 -20, 70 guaranteed max osc freq, khz f max astable operation 500 25 10 2.0- 18.0 200 -20, 70 initial accuracy , % 5 drift with temperature , %/ f 5.0 0.02 -20, 70 10.0 0.03 15.0 0.06 drift with supply voltage, ? f 5.0 3 25 10 %/ r l = 1 - 100 k ? , c l = 0.1 f 6 -20, 70 figura 1. block diagram t thl t tlh t hl trigger gnd v cc gnd v cc output 0.9 0.1 0.1 0.9 0.9 0.1 figura 2. switcing waveforms comparator a threshold trigger comparator b
ilc555 5 integral chip pad diagram izc555 pad size 0.110 x 0.110 mm (pad size is given as per passivation layer) thickness of chip 0,46 0,02 mm pad location pad no symbol x y 01 gnd 1.2840 0.1160 02 trigger 1.2840 0.4410 03 output 1.2815 1.0545 04 reset 0.8870 1.0840 05 control voltage 0.3335 1.0840 06 threshold 0.1160 0.9995 07 discharge 0.1160 0.7965 08 vcc 0.1760 0.1270 chip marking 555 (x=0.890, y=0.345)
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