ts 2411 tong ringer 1 / 7 version: a08 dip - 8 general description the ts 2411 is a bipolar integrated circuit designed for telephone bell replacement. features d esigned for telephone bell replacement low current drain adjustable 2 - frequency tone adjustable warbling rate extension tone ringer modules alarms or other alerting devices adjustable for reduced supply initiation current. built - in hyster e sis prevents false triggering and rotary dial chirps . ordering information part no. package packing ts2411 cd c3 dip - 8 50pcs / tube block diagram pin definition : 1. vcc 5. gnd 2 . rsl 6. hfo 3 . lfi 7. hfi 4. lfo 8. out
ts 2411 tong ringer 2 / 7 version: a08 absolute maximum rating parameter symbol value unit dc supply voltage (referenced to gnd) vcc + 3 6 v power dissipation in still air p lastic dip pd 4 00 mw switch collect or voltage tstg - 65 to +150 o c note: a. maximum ratings are those values beyond which damage to the device may occur. b. functional operation should be restricted to the recommended operating conditions. recommended operating conditions d escription symbol min max unit operating voltage vopr 13 36 v operating temperature t a - 45 +65 o c note: this device contains protection circuitry circuitry to guard against damage due to high static voltages or electric fidlds. however, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high - impedance circuit. for proper operation, v in and v out should be constrained to the range gnd (v in or v out) vcc. unused inputs must always be tied to an appropriate logic voltage level (e.g.,either gnd or vcc). unused outputs must be left open. electrical specifications ( voltages referenced to gnd,ta= - 0 to +70 o c) parameter symbol test condition s m in t yp m ax u nit initiation supply voltage (1) v si see figure 2 16.8 -- 21.2 v initiation supply current (1) i si see figure 2 1.4 -- 4.2 ma sustaining voltage (1) v sus see figure 2 9.5 -- 12.2 v sustaining current i sus see figure 2 0.7 -- 2 .5 ma hi gh - level output voltage v oh vcc=21v,i oh = - 15ma, pin6=6v, pin7=gnd 16.7 -- 21.0 v low - level output voltage v ol vcc=21v,i ol =15ma, pin6= gnd, pin7=6v -- -- 1.8 v pin3 =6v, pin4 =gnd, vcc=21v -- -- 1.0 ? a maximin input leakage current i in pin7 =6v, pin6 =gnd, vcc=21v -- -- 1.0 ? a high frequency 1 f h1 r 3 =191k ,c 3 =6800pf 461 -- 563 h z high frequency 2 f h2 r 3 =191k ,c 3 =6800pf 576 -- 704 h z low frequency f l r 2 =165k ,c 2 =0.47uf 9.0 -- 11.0 h z ringing start voltage (4) vtr see fi gure 1 -- -- 36 v notes : a. initiation supply voltage ( v si ) is the supply voltage required to start the tone ringer oscillating. b. sustaining voltage ( v sus ) is the supply voltage required to maintain oscillation. c. ringing start voltage is the value o f ac supply voltage required to start the tone ringer ringing in fig.3 d. this product is not designed for protection against radioactive rays. e. all data and specifications are subject to change without notice.
ts 2411 tong ringer 3 / 7 version: a08 application circuit how to use the rsl pi n in the ic, the supply initiation current (lsi) can be changed using the rsl pin. as show is the diagram, the rsl (pin 2) is grounded through resistor rs. by changing the rs value, supply initiation current can be changed. supply voltage (vcc) vs. supply current (lcc) characteristics resulting from changes in the value of rs are shown in the following diagram. figure 1. ringing start voltage test circuit f igure 2 . test circuit (1)
ts 2411 tong ringer 4 / 7 version: a08 application circuit s witc h position is the following table: : parameter sw1 sw2 vsi , isi 1 1 vsus , isus 1 1 voh 2 2 vol 2 3 f igure 3. test circuit ( 2 ) switch position is the following table: parameter sw1 sw2 fl 1 1 fh1 3 2 fh2 2 2 application note the application circuit illustrates the use of the ts2411 devices in typical telephone or extension tone ringer application. the ac ringer signal voltage appears across the tip and ring inputs of the circuit and is atten uated by capacitorc1 and resistor r1. c1 also provides isolation from dc voltages (48v) on the exchange line. after full wave rectification by the bridge diode, the waveform is filtered by capacitor c4 to provide a dc supply for the tone ringer chip. as t his voltage exceeds the initiation voltage (vsi), oscillation starts. with the components shown, the output frequency chops between 512(fh1) and 640hz(fh2) at a 10hz(fl) rate. the loudspeaker load is coupled through a 1300w to 8w transformer. the output co upling capacitor c5 is required with transformer coupled loads. when driving a piezo - ceramic transducer type load, the coupling c5 and transformer (1300w:8w) are not required. however, a current limiting resistor is required. the low frequency oscillator o scillates at a rate (fl) controlled by an external resistor (r2) and capacitor (c2). the frequency can be determined using the relation fl=1/1.289r2*c2. the high frequency oscillates at a fh1, fh2 controlled by an external resistor (r3) and capacitor (c3). the frequency can be determined using the relation h1=1/1.504r3*c3, fh2=1/1.203r3*c3. r1 = 165 k (+/ - ) 1% r2 = 191 k (+/ - ) 1% c1 = 0.47 f (+/ - ) 5% c2 = 0.0068 f ( +/ - ) 5% r1 = 165 k (+/ - ) 1% r2 = 191 k (+/ - ) 1% c1 = 0.47 f (+/ - ) 5% c2 = 0.0068 f (+/ - ) 5%
ts 2411 tong ringer 5 / 7 version: a08 application note pin 2 allows connection of an external resistor rsl, which is used to program the slope of the supply current vs supply voltage characteristics (see fig2), and hence the supply current up to the initiation voltage ( vsi ). this initiation voltage remains constant independent of rsl. the supply current drawn prior to triggering varies inversely with rsl, decreasing for increasing value of resistance. t hus, increasing the value of rsl will decrease the amount of ac ringing current required to trigger the device. as such, longer sucribser loops are possible since less voltage is dropped per unit length of loop wire due to the lower current level. rsl can also be used to compensate for smaller ac couplin capacitors (c5 on fig 3) (higher impedance) to the line which can be used to alter the ringer equivalence number of a tone ringer circuit. the graph in fig2 illustrates the variation of supply current with supply voltage. three curves are drawn to show the variation of initiation current with rsl. curve b( rsl=6.8k ) shows the i - v characteristic for the ts2411 tone ringer. curve a is a plot with rsl<6.8kw and shows an increase in the current drawn up to the initiation voltage vsi. the i - v characteristic after initiation remains unchanged. curve c illustrates the effect of increasing rsl above 6.8kw initiation current decreases but again current after triggering is unchanged. characteristics curve figure 4. figure 5.
ts 2411 tong ringer 6 / 7 version: a08 dip - 8 mechanical drawing marking diagram y = year code m = month code ( a =jan, b =feb, c =mar, d =apl, e =may, f =jun, g =jul, h =aug, i =sep, j =oct, k =nov, l =dec) l = lot code di p - 8 dimension millimeters inches dim min max min max a 9.07 9.32 0.357 0.367 b 6.22 6.48 0.245 0.255 c 3.18 4.45 0.125 0.135 d 0.35 0.55 0.019 0.020 g 2.54 (typ) 0.10 (typ) j 0.29 0.31 0.011 0.012 k 3.25 3.35 0.128 0.132 l 7.75 8.00 0.305 0.315 m - 10 o - 10 o
ts 2411 tong ringer 7 / 7 version: a08 notice specifications of the products displayed herein are subject to change without notice. tsc or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. information contained herein is i ntended to provide a product description only. no license, express or implied, to any intellectual property rights is granted by this document. except as provided in tsc s terms and conditions of sale for such products, tsc assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of tsc products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual pro perty right. the products shown herein are not designed for use in medical, life - saving, or life - sustaining applications. customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify tsc for a ny damages resulting from such improper use or sale.
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