View TS555CDT_7266473.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

november 2008 rev 2 1/20 20 ts555 low power single cmos timer features very low power consumption: 110 a typ at v cc = 5 v 90 a typ at v cc = 3 v high maximum astable frequency of 2.7 mhz pin-to-pin functionally-compatible with bipolar ne555 wide voltage range: +2 v to +16 v supply current spikes reduced during output transitions high input impedance: 10 12 output compatible with ttl, cmos and logic mos description the ts555 is a single cmos timer with a very low consumption: (i cc(typ) ts555 = 110 a at v cc = +5 v versus i cc(typ) ne555 = 3 ma), and high frequency: (f f(max.) ts555 = 2.7 mhz versus f (max) ne555 = 0.1 mhz). timing remains accurate in both monostable and astable mode. the ts555 provides reduced supply current spikes during output transitions, which enable the use of lower decoupling capacitors compared to those required by bipolar ne555. with the high input impedance (10 12 ), timing capacitors can also be minimized. n dip8 (plastic package) d so8 (plastic micropackage) p tssop8 (thin shrink small outline package) 1 2 3 4 8 7 6 5 gnd trigger output reset cc control voltage v discharge threshold pin connections (top view) www.st.com
absolute maximum ratings and operating conditions ts555 2/20 1 absolute maximum ratings and operating conditions table 1. absolute maximum ratings symbol parameter value unit v cc supply voltage +18 v i out output current 100 ma r thja thermal resistance junction to ambient dip8 (1) so8 (2) tssop8 (2) 1. short-circuits can cause excessive heating. these values are typi cal and specified for a single layer pcb. 2. short-circuits can cause excessive heating. these values are typi cal and specified for a four layers pcb. 85 125 120 c/w r thjc thermal resistance junction to case dip8 (1) so8 (2) tssop8 (2) 41 40 37 c/w t j junction temperature +150 c t stg storage temperature range -65 to +150 c esd human body model (hbm) (3) 3. human body model: a 100 pf capacit or is charged to the specified voltage, then discharged through a 1.5k resistor between two pins of the device. this is done for all couples of connected pin combinations while the other pins are floating. 1500 v machine model (mm) (4) 4. machine model: a 200 pf capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 ). this is done for all couples of connected pin combinations while the other pins remain floating. 200 charged device model (cdm) (5) 5. charged device model: all pins plus package ar e charged together to the specified voltage and then discharged directly to the ground. 1000 table 2. operating conditions symbol parameter value unit v cc supply voltage 2 to 16 v i out output sink current output source current 10 50 ma t oper operating free air temperature range ts555c ts555i ts555m 0 to +70 -40 to +125 -55 to +125 c
ts555 schematic diagrams 3/20 2 schematic diagrams figure 1. schematic diagram r1 50k 1 r2 50k r3 50k r4 50k r5 50k r6 50k 2 4 threshold 5 6 7 14 8 9 15 16 17 18 19 trigger 24 22 23 28 29 32 35 33 discharge output 10 11 12 13 20 21 26 25 27 30 31 34 gnd reset v cc r7 control voltage
schematic diagrams ts555 4/20 figure 2. block diagram note: low: level voltage minimum voltage specified. high: level voltage maximum voltage specified. x: irrelevant. table 3. functions table reset trigger threshold output low x x low high low x high high high high low high high low previous state output discharge ground trigger control voltage threshold v cc reset 1 6 5 2 8 4 r r r b a r1 r s q + - + - 7 3 ts555
ts555 electrical characteristics 5/20 3 electrical characteristics table 4. static electrical characteristics v cc = +2 v, t amb = +25 c, reset to v cc (unless otherwise specified) symbol parameter min. typ. max. unit i cc supply current (no load, high and low states) t min. t amb t max 65 200 200 a v cl control voltage level t min. t amb t max 1.2 1.1 1.3 1.4 1.5 v v dis discharge saturation voltage (i dis = 1 ma) t min. t amb t max 0.05 0.2 0.25 v i dis discharge pin leakage current 1 100 na v ol low level output voltage (i sink = 1 ma) t min. t amb t max 0.1 0.3 0.35 v v oh high level output voltage (i source = -0.3 ma) t min. t amb t max 1.5 1.5 1.9 v v trig trigger voltage t min. t amb t max 0.4 0.3 0.67 0.95 1.05 v i trig trigger current 10 pa i th threshold current 10 pa v reset reset voltage t min. t amb t max 0.4 0.3 1.1 1.5 2.0 v i reset reset current 10 pa
electrical characteristics ts555 6/20 table 5. static electrical characteristics v cc = +3 v, t amb = +25 c, reset to v cc (unless otherwise specified) symbol parameter min. typ. max. unit i cc supply current (no load, high and low states) t min. t amb t max 90 230 230 a v cl control voltage level t min. t amb t max 1.8 1.7 22.2 2.3 v v dis discharge saturation voltage (i dis = 1 ma) t min. t amb t max 0.05 0.2 0.25 v i dis discharge pin leakage current 1 100 na v ol low level output voltage (i sink = 1 ma) t min. t amb t max 0.1 0.3 0.35 v v oh high level output voltage (i source = -0.3 ma) t min. t amb t max 2.5 2.5 2.9 v v trig trigger voltage t min. t amb t max 0.9 0.8 11.1 1.2 v i trig trigger current 10 pa i th threshold current 10 pa v reset reset voltage t min. t amb t max 0.4 0.3 1.1 1.5 2.0 v i reset reset current 10 pa
ts555 electrical characteristics 7/20 table 6. dynamic electrical characteristics v cc = +3 v, t amb = +25 c, reset to v cc (unless otherwise specified) symbol parameter min. typ. max. unit timing accuracy (monostable) (1) r = 10 k , c = 0.1 f v cc =2v v cc =3v 1. see figure 4 . 1 1 % timing shift with supply voltage variations (monostable) r = 10 k , c = 0.1 f, v cc = 3 v 0.3 v (1) 0.5 %/v timing shift with temperature (1) t min. t amb t max .5 75 ppm/c f max maximum astable frequency (2) r a = 470 , r b = 200 , c = 200 pf 2. see figure 6 . 2 mhz astable frequency accuracy (2) r a = r b = 1 k to 100 k , c = 0.1 f 5 % timing shift with supply voltage variations (astable mode) (2) r a = r b = 1 k to 100 k , c = 0.1 f, v cc = 3 to 5 v 0.5 %/v t r output rise time (c load = 10 pf) 25 ns t f output fall time (c load = 10 pf) 20 - ns t pd trigger propagation delay 100 ns t rpw minimum reset pulse width (v trig = 3 v) 350 ns
electrical characteristics ts555 8/20 table 7. static electrical characteristics v cc = +5 v, t amb = +25 c, reset to v cc (unless otherwise specified) symbol parameter min. typ. max. unit i cc supply current (no load, high and low states) t min. t amb t max 110 250 250 a v cl control voltage level t min. t amb t max 2.9 2.8 3.3 3.8 3.9 v v dis discharge saturation voltage (i dis = 10 ma) t min. t amb t max 0.2 0.3 0.35 v i dis discharge pin leakage current 1 100 na v ol low level output voltage (i sink = 8 ma) t min. t amb t max 0.3 0.6 0.8 v v oh high level output voltage (i source = -2 ma) t min. t amb t max 4.4 4.4 4.6 v v trig trigger voltage t min. t amb t max 1.36 1.26 1.67 1.96 2.06 v i trig trigger current 10 pa i th threshold current 10 pa v reset reset voltage t min. t amb t max 0.4 0.3 1.1 1.5 2.0 v i reset reset current 10 pa
ts555 electrical characteristics 9/20 m table 8. dynamic electrical characteristics v cc = +5 v, t amb = +25 c, reset to v cc (unless otherwise specified) symbol parameter min. typ. max. unit timing accuracy (monostable) (1) r = 10 k , c = 0.1 f 1. see figure 4 . 2% timing shift with supply voltage variations (monostable) (1) r = 10 k , c = 0.1 f,v cc = 5 v 1 v 0.38 %/v timing shift with temperature (1) t min. t amb t max 5 75 ppm/c f max maximum astable frequency (2) r a = 470 , r b = 200 , c = 200 pf 2. see figure 6 . 2.7 mhz astable frequency accuracy (2) r a = r b = 1 k to 100 k , c = 0.1 f 3 % timing shift with supply voltage variations (astable mode) (2) r a = r b = 10 k , c = 0.1 f, v cc = 5 to 12 v 0.1 %/v t r output rise time (c load = 10 pf) 25 ns t f output fall time (c load = 10 pf) 20 - ns t pd trigger propagation delay 100 ns t rpw minimum reset pulse width (v trig = 5 v) 350 ns
electrical characteristics ts555 10/20 table 9. static electrical characteristics v cc = +12 v, t amb = +25 c, reset to v cc (unless otherwise specified) symbol parameter min. typ. max. unit i cc supply current (no load, high and low states) t min. t amb t max 170 400 400 a v cl control voltage level t min. t amb t max 7.4 7.3 88.6 8.7 v v dis discharge saturation voltage (i dis = 80 ma) t min. t amb t max 0.09 1.5 2.0 v i dis discharge pin leakage current 1 100 na v ol low level output voltage (i sink = 50 ma) t min. t amb t max 1.2 2 2.8 v v oh high level output voltage (i source = -10 ma) t min. t amb t max 10.5 10.5 11 v v trig trigger voltage t min. t amb t max 3.2 3.1 44.8 4.9 v i trig trigger current 10 pa i th threshold current 10 pa v reset reset voltage t min. t amb t max 0.4 0.3 1.1 1.5 2.0 v i reset reset current 10 pa table 10. dynamic electrical characteristics v cc = +12 v, t amb = +25 c, reset to v cc (unless otherwise specified) symbol parameter min. typ. max. unit timing accuracy (monostable) (1) r = 10 k , c = 0.1 f, v cc = +12 v 1. see figure 4 . 4% timing shift with supply voltage variations (monostable) (1) r = 10 k , c = 0.1 f, v cc = +5 v 1 v 0.38 %/v timing shift with temperature t min. t amb t max. , v cc = +5 v 75 ppm/c f max maximum astable frequency (2) r a = 470 , r b = 200 , c = 200 pf, v cc = +5 v 2. see figure 6 . 2.7 mhz astable frequency accuracy r a = r b = 1 k to 100 k , c = 0.1 f, v cc = +12 v 3% timing shift with supply voltage variations (astable mode) r a = r b = 1 k to 100 k , c = 0.1 f, v cc = 5 to +12 v 0.1 %/v
ts555 electrical characteristics 11/20 figure 3. supply current (per timer) versus supply voltage cc supply voltage, v (v) cc supply current, i ( a) 300 200 100 0 4 8 12 16
application information ts555 12/20 4 application information 4.1 monostable operation in monostable mode, the timer operates like a one-shot generator. the external capacitor is initially held discharged by a transistor inside the timer, as shown in figure 4 . figure 4. application schematic the circuit triggers on a negative-going input signal when the level reaches 1/3 v cc . once triggered, the circuit remains in this state until the set time has elapsed, even if it is triggered again during this interval. the duration of the output high state is given by t = 1.1 r x c . since the charge rate and threshold level of the comparator are both directly proportional to the supply voltage, the timing interval is independent of the supply. applying a negative pulse simultaneously to the reset terminal (pin 4) and the trigger terminal (pin 2) during the timing cycle discharges the external capacitor and causes the cycle to start over. the timing cycle then starts on the positive edge of the reset pulse. while the reset pulse is applied, the output is driven to the low state. when a negative trigger pulse is applied to pin 2, the flip-flop is set, releasing the short circuit across the external capacitor and dr iving the output high. the voltage across the capacitor increases exponentially with the time constant = r x c . when the voltage across the capacitor equals 2/3 v cc , the comparator resets the flip-flop which then discharges the capacitor rapidly and drives the output to its low state. figure 5 shows the actual waveforms generated in this mode of operation. when reset is not used, it should be tied high to avoid any false triggering. figure 5. timing diagram v cc reset trigger out 3 2 4 8 7 6 5 1 ts555 r c control voltage 0.01 f capacitor voltage = 2.0v/div t = 0.1 ms / div input = 2.0v/div output voltage = 5.0v/div r = 9.1k , c = 0.01 f , r = 1.0k l
ts555 application information 13/20 4.2 astable operation when the circuit is connected as shown in figure 6 (pins 2 and 6 connected) it triggers itself and runs as a multi-vibrator. the external capacitor charges through r a and r b and discharges through r b only. therefore, the duty cycle may be precisely set by the ratio of these two resistors. in the astable mode of operation, c charges and discharges between 1/3 v cc and 2/3 v cc . as in the triggered mode, the charge and discharge times, and therefore frequency, are independent of the supply voltage. figure 6. application schematic figure 7 shows actual waveforms generated in this mode of operation. the charge time (output high) is given by: t1 = 0.693 (r a + r b ) c the discharge time (output low) by: t2 = 0.693 x r b x c thus the total period t is given by: t = t1 + t2 = 0.693 (r a + 2r b ) c the frequency of o scillation is then: the duty cycle is given by: figure 7. timing diagram v cc reset out 3 4 8 7 5 1 ts555 r c 2 6 r a b control voltage 0.01 f f = 1 t --- = 1.44 (ra 2rb ) c + ------------------------------------- - d = rb ra 2rb + --------------------------- t = 0.5 ms / div output voltage = 5.0v/div capacitor voltage = 1.0v/div l r = r = 4.8 k , c = 0.1 f , r = 1.0k ab
package information ts555 14/20 5 package information in order to meet environmental requirements, stmicroelectronics offers these devices in ecopack ? packages. these packages have a lead-free second level interconnect. the category of second level interconnect is marked on the package and on the inner box label, in compliance with jedec standard jesd97. the maximum ratings related to soldering conditions are also marked on the inner box label. ecopack is an stmicroelectronics trademark. ecopack specifications are available at: www.st.com .
ts555 package information 15/20 5.1 dip8 package information figure 8. dip8 package mechanical drawing table 11. dip8 package mechanical data ref. dimensions millimeters inches min. typ. max. min. typ. max. a5.330.210 a1 0.38 0.015 a2 2.92 3.30 4.95 0.115 0.130 0.195 b 0.36 0.46 0.56 0.014 0.018 0.022 b2 1.14 1.52 1.78 0.045 0.060 0.070 c 0.20 0.25 0.36 0.008 0.010 0.014 d 9.02 9.27 10.16 0.355 0.365 0.400 e 7.62 7.87 8.26 0.300 0.310 0.325 e1 6.10 6.35 7.11 0.240 0.250 0.280 e 2.54 0.100 ea 7.62 0.300 eb 10.92 0.430 l 2.92 3.30 3.81 0.115 0.130 0.150
package information ts555 16/20 5.2 so-8 package information figure 9. so-8 package mechanical drawing table 12. so-8 package mechanical data ref. dimensions millimeters inches min. typ. max. min. typ. max. a1.750.069 a1 0.10 0.25 0.004 0.010 a2 1.25 0.049 b 0.28 0.48 0.011 0.019 c 0.17 0.23 0.007 0.010 d 4.80 4.90 5.00 0.189 0.193 0.197 e 5.80 6.00 6.20 0.228 0.236 0.244 e1 3.80 3.90 4.00 0.150 0.154 0.157 e 1.27 0.050 h 0.25 0.50 0.010 0.020 l 0.40 1.27 0.016 0.050 l1 1.04 0.040 k1 81 8 ccc 0.10 0.004
ts555 package information 17/20 5.3 tssop8 package information figure 10. tssop8 package mechanical drawing table 13. tssop8 package mechanical data ref. dimensions millimeters inches min. typ. max. min. typ. max. a 1.2 0.047 a1 0.05 0.15 0.002 0.006 a2 0.80 1.00 1.05 0.031 0.039 0.041 b 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.008 d 2.90 3.00 3.10 0.114 0.118 0.122 e 6.20 6.40 6.60 0.244 0.252 0.260 e1 4.30 4.40 4.50 0.169 0.173 0.177 e 0.65 0.0256 k0 80 8 l 0.45 0.60 0.75 0.018 0.024 0.030 l1 1 0.039 aaa 0.1 0.004
ordering information ts555 18/20 6 ordering information table 14. order codes order code temperature range package packaging marking ts555cn 0c, +70c dip8 tube ts555cn ts555cd TS555CDT so-8 tube or tape & reel 555c ts555cpt tssop8 tape & reel 555c ts555in -40c, +125c dip8 tube ts555in ts555id ts555idt so-8 tube or tape & reel 555i ts555ipt tssop8 tape & reel 555i ts555mn -55c, +125c dip8 tube ts555cm ts555md ts555mdt so-8 tube or tape & reel 555m ts555mpt tssop8 tape & reel 555m
ts555 revision history 19/20 7 revision history table 15. document revision history date revision changes 01-feb-2003 1 initial release. 03-nov-2008 2 document reformatted. added output current, esd and thermal resistance values in table 1: absolute maximum ratings . added output current values in table 2: operating conditions .
ts555 20/20 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. unless expressly approved in writing by an authorized st representative, st products are not recommended, authorized or warranted for use in milita ry, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2008 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

▲Up To Search▲

Price & Availability of TS555CDT

	To Download TS555CDT Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .