ts2418 telephone tone ringer with bridge diode 1 / 5 version: b 07 dip - 8 general description the ts 2418 is a monolithic integrated circuit telephone tone ringer with bridge diode, when coupled with an appropriate transducer, it replaces the electromechanical be l l. this device is designed for use wit h either a piezo transducer or an inexpensive transformer coupled speaker to produce a pleasing tone composed of a high frequency (fr) alternating with a low frequency (fl) resulting in a warble frequency. the supply voltage is obtained from the ac ring si gnal and the circuit is designed so that noise on the line or variation of the ringing signal can not affect correct operation of the device features on chip high voltage full wave diode bridge rectifier . low current consumption, in order to allow the par allel operation of the 4 devices . low external component count . tone and switching frequencies adjustable by external c omponents . high noise immunity due to built - in voltage current h ysteresis . activation voltage adjustable . internal zener diodes to prot ect against over voltages . ringer impedance adjustable with external components . ordering information part no. package packing ts2418cd c3 dip - 8 50pcs / tube block diagram pin definition : 1. ring 5. tip 2 . ground 7. rc 3 . src 6. ava 4. ofc 5. output
ts2418 telephone tone ringer with bridge diode 2 / 5 version: b 07 a bsolute maximum rating parameter symbol value unit calling voltage (f=50hz) continuous v tp 120 vrms calling voltage (f=50hz) 5 sec on/10 sec off v tp 200 vrms supply current i cc 22 ma operating temperature t op 0~+70 0 c storage and junction temperature tstg - 65~+150 0 c note: a. maximum rating 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 description symbol min max unit supply voltage v cc -- 26 v operating temperature t a - 20 + 70 0 c note: this device contains protection circuitry to guard against damage due to high static voltages or electric fields. 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 ) v cc . unused inputs must always be tied to an appropriate logic voltage level (e.g., eithe r gnd or v cc ). unused output must be left open. electrical specifications ( ta = 25 o c , unless otherwise noted ) parameter symbol test conditions m in t yp m ax u nit supply voltage v cc -- -- 26 v current consumption without load i cc vs = 8.8 to 26v -- 1.5 1 .8 ma activation voltage v on 12.2 -- 13 v activation voltage range v onr r a =1k 8 .0 -- 10 v sustaining voltage v sus 8 .0 -- 8.8 v differential resistance in off condition r d 6.4 -- -- k output voltage swing v out -- v cc - 3 -- v short circuit curren t i out vs=26v -- 35 -- ma ac operation output frequency f h1 f h2 f h1 f h2 v cc =26v,r1=14k v scr =0v v scr =6v -- -- 2300 1700 -- -- hz hz f h1 range r1=27k to 1.7 k 0.1 -- 15 khz sweep frequency f l r1=14k ,c1=100nf -- 10 -- hz
ts2418 telephone tone ringer with bridge diode 3 / 5 version: b 07 test and app lication circuit . description: the ts 2418 tone ringer derives its power supply by rectifying the ac ringing signal. it uses this power to activate two tone generators. the two tone frequencies generated are switched by in ternal oscillator in a fast sequence and made audible across an output amplifier in the loudspeaker; both tone frequencies and the switching frequency can be externally adjusted. the device can drive either directly a piezo ceramic converter (buzzer) or s mall loudspeaker. in case of using a loud - speaker, a transformer is needed. an internal shunt voltage regulator provides dc voltage to the output stage, low frequency oscillator, and high f f requency oscillator. to protect the ic from telephone line trans ients, a zener diode is included.
ts2418 telephone tone ringer with bridge diode 4 / 5 version: b 07 dip - 8 mechanical drawing marking diagram y = year code m = month co de ( 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
ts2418 telephone tone ringer with bridge diode 5 / 5 version: b 07 notice specifications of the products displayed herein are subject to cha nge without notice. tsc or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. information contained herein is intended to provide a product description only. no license, express or implied, to any intellectual pro perty 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 property right. the products shown herein are not designed for use in medical, life - saving, or life - sust aining 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 any damages resulting from such improper use or sale.
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