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technical data IL91214a/b tone/pulse dialer with flash function ordering information IL91214a/ b n pl ast i c IL91214a/ b d soic t a = -20 to 7 0 c for all packages IL91214a and IL91214b are tone/ pulse dialers designed for providing standard dtmf or pulse signals. the ics enable to: - generate standard dtmf or pulse signals of dialing as well as ?flash? pulses; - store and redial last num ber; - generate pause in the transm itted package of dial signals; ics are designed to be used in telephone sets. d s u f f i x so i c r1 r4 c1 c3 keyboard logic redial memory 32 digits dp kt xmit mute mode out output logic osci osco osc. control logic mode in hk input logic dtmf generator v dd tone fi g. 1. b l ock di agram .
IL91214 a, IL91214b pin descripition pi n # a b desig n a tio n d escrip tio n 1 1 hk hook swi t c h i nput 2 2 m ode in m ode in = v dd : pul se m ode, 10 hz, / = 1/ 2, m ode in = v ss : t one m ode, m ode in = fl oat i ng m ode, 20 hz, / = 1/ 2 3 3 osci oscillator input 4 4 osco oscillato r o u t p u t 5 5 v ss ground 6 6 v dd suppl y out put 7 7 tone tone di al i ng out put 8 8 xm it mute di al i ng t r ansm i ssi on m u t e out put 9 m ode out m ode out put pi n 1 0 kt key - i n t one out put 9 1 1 dp di al i ng pul se out put 10 12 c1 key board col u m n i nput 11 13 c2 key board col u m n i nput 12 14 c3 key board col u m n i nput 13 15 r1 key board row i nput 14 16 r2 key board row i nput 15 17 r3 key board row i nput 16 18 r4 key board row i nput keyboard assignm ent r4 hk mo d e i n os c i os c o xm i t m u t e r3 r2 r1 c3 c2 c1 dp 01 02 03 04 05 06 11 12 13 07 08 vs s vd d to n e 09 10 14 15 16 r4 hk mode in osci osco xmit mute r3 r2 r1 c3 c2 c1 dp 01 02 03 04 05 06 12 13 14 07 08 vss vdd tone 09 10 11 15 16 17 18 mode out kt IL91214b IL91214a 1. */ t ? at pul s e m ode t h i s key works as pul s e -> dtm f key (t key ) , at dtm f m ode t h e key works as *key . */ t key r4 r3 r2 rd # 0 */t p 9 8 7 f2 6 5 4 f1 3 2 1 c1 c2 c3 c4 r1 will o ccu p y o n e m e m o ry d i g it in eith er u s e. 2. f1 ? fl ash key . the break t i m e i s 297m s 3. f2 ? fl ash key for break t i m e 640m s 4. p ? pause key (2.2 seconds) 5. r d ? one key redi al key 6. # - at pul se m ode t h i s key i nput i s negl ect ed, at dtm f m ode t h i s key works as # key .
IL91214 a, IL91214b
IL91214 a, IL91214b dc electrical characteristics (v dd = 3.5 v, v ss = 0 v, f osc = 3.579 hz, t = 25 o c, unless otherwise specified) p a r a m e t e r s y m b o l m i n . t y p m a x . c o n d i t i o n 2 . 0 5 . 5 pul s e m o d e suppl y vol t a ge, v v dd 2 . 0 5 . 5 t o n e m o d e m e m o ry ret e nt i on vol t a ge, v v mr 1 m e m o ry retention current, u * i mr 0 . 0 5 0 . 4 v dd = 1.0 v hk = v dd i ddp 0 . 3 2 1 . 0 pul s e operation current, ? i ddt 0 . 6 2 . 0 t o n e al l out put s unl oaded 0 . 0 3 0 . 0 5 hk=v d d st andby current , u * i so 0 . 5 1 0 ? =v ss al l out put s unl oaded. no key selected. v dd =1.5v v ih 0.8 v dd v dd input vol t a ge, v v il 0 0 . 2 v dd v dd = 3.5 v input current r1 -r4 , u i r 1 1 5 v oc 5 8 4 7 3 0 8 7 6 c o l u m n tone out vol t a ge, v v or 4 5 6 5 7 0 6 8 4 r o w v dd =3.5v r l =5 si nk current xm ute, ? i ol1 0 . 9 5 . 3 v dd =3.5v, v ol =0.4v si nk current dp, ? i ol2 1 . 1 5 . 3 v dd =3.5v, v ol =0.4v di st ort i on, % dis % 1 5 * - i n t h i s m ode ic funct i oni ng i s not guarant eed.
IL91214 a, IL91214b ac characteristics (v dd = 3.5 v, v ss = 0 v, f osc = 3.579 hz, t = 25 o c, unless otherwise specified) condition p a r a m e t e r s y m b o l m i n . typ m a x . dia ling speed, pps 3 3 . 3 1 0 m / b = 1/ 2 mak e tim e, s t m 1 6 . 7 2 0 m / b = 1/ 2 6 6 . 6 1 0 m / b = 1/ 2 break tim e, s 3 3 . 3 2 0 m / b = 1/ 2 8 2 4 1 0 p p s in ter-d ig it p a u s e tim e, s t idp 4 5 8 2 0 p p s pause tim e, s t pau 2 . 2 auto-redial break tim e, s t aobk 2 . 2 delay tim e key valid to signal out, s t d 0 key - in debounce, s t kd 2 1 key - in tone duration, s t ktd 2 3 key - in tone frequency , hz f kt 4 3 7 minim a l tone duration tim e, s t mfd 9 4 minim u m tone inter-digit pause, s t tidp 9 6 redial tone duration, s t mfdr 9 4 redial tone inter-digit duration, s t tidpr 9 6 values of generated frequencies r / c frequency error, % uni t c ondi t i ons r1 6 9 7 + 0 . 3 1 h z r2 7 7 0 + 0 . 1 9 h z r3 8 5 2 + 0 . 0 3 h z r4 9 4 1 + 0 . 1 0 h z 1 1 . 2 0 9 + 0 . 5 7 h z 2 1 . 3 3 6 - 0 . 3 2 h z 3 1 . 4 7 7 - 0 . 3 5 h z fosc = 3.579 hz absolute maximum ratings p a r a me t e r a b s o l u t e ma x i mu m v a l u e suppl y vol t a ge input vol t a ge out put vol t a ge out put vol t a ge (dp, xm it m u te). tone out put current power di ssi pat i on storage tem p erature v dd v in v out v out i tone p d t stg 6.0v v ss -0.3v ~ v dd +0.3v v ss -0.3v ~ v dd +0.3v 1.2v 50 ? 500 w -40 ~ +125
IL91214 a, IL91214b 1. pulse dialing m ode. ? hk key input xmit mute 21 s t m t idp t m t d t kt d ( 23 s) , f = 437 hz 3 2 1 t kd : debouncing tim e 21 s dp t m t b 2. tone dialing m ode. hk key input 9 * 4 3 3. redialing. xmit mute ? t kd t d t mfd 2. 3 s 2. 3 s 2. 3 s 2. 5 s tone t ti d p mode out hk key input ? xmit mute t mfdr t d rd 2. 5 s tone mode out t ti d p r
IL91214 a, IL91214b 4. switching m ode operation (mode in control). 2 3 */t 6 4 xmit mute hk key input mode in ? dp mode out t idp t d t m t idp t m t pa u t mfd tone 5. switching m ode operation (*/t key entry). 2 3 */t 6 4 t m t idp t m hk key input ? mode in dp mode out xmit mute tone t mfd t pa u t d t idp 2. 5 ? 2. 5 ?
IL91214 a, IL91214b 6. one key redial using rd key (dtmf m ode for exam ple). hk key input xmit mute rd 2 3 t ao b k 2. 5 s t d t d 2. 5 s dp tone mode out 7. flash dialing xmit mute key input hk 2. 5 ? 2. 5 s t pa u t fsh 3 4 f 6 dp mode out tone
IL91214 a, IL91214b IL91214a/b
IL91214 a, IL91214b n s u f f i x p l as t i c di p (m s - 0 0 1 b b ) sy m b o l m i n m a x a 18. 67 19. 69 b 6. 1 7 . 1 1 c 5. 33 d 0. 36 0. 56 f 1. 14 1. 78 g h j 0 10 k 2. 92 3. 81 no t e s : l 7. 62 8. 26 1. d i m e n s i o n s ?a ?, ?b ? d o n o t i n cl u d e m o l d f l as h o r p r o t r u s i o n s . m 0. 2 0 . 3 6 m a x i m u m m o l d f l a s h o r p r o t r u s i o n s 0. 25 m m ( 0 . 010) p e r s i d e . n 0. 38 d su f f i x so i c (m s - 0 1 2 a c) sy m b o l m i n m a x a 9. 8 1 0 b 3. 8 4 c 1. 35 1. 75 d 0. 33 0. 51 f 0. 4 1 . 2 7 g h j 0 8 no t e s : k 0. 1 0 . 2 5 1. d i m e n s i o ns a a n d b d o no t i n c l ud e m o l d f l a s h o r p r ot r u s i on . m 0. 19 0. 25 2. m a x i m u m m o l d f l a s h o r p r o t r u s i o n 0. 15 m m ( 0 . 006) p e r s i d e p 5. 8 6 . 2 fo r a ; fo r b ? 0. 25 m m ( 0 . 010) p e r s i d e . r 0. 25 0. 5 5. 72 2. 54 7. 62 1. 27 d i me n s i o n , mm d i me n s i o n , mm a b h c k c m j f m p g d r x 4 5 se a t i n g pl an e 0 . 25 ( 0 . 010 ) m t -t - 1 16 8 9 l h m j a b f g d se a t i n g pl a n e n k 0. 2 5 ( 0 . 010) m t -t - c 1 16 8 9
IL91214 a, IL91214b n s u f f i x p l as t i c di p (m s - 0 0 1 a c ) sy m b o l m i n m a x a 22. 35 23. 37 b 6. 1 7 . 1 1 c 5. 33 d 0. 36 0. 56 f 1. 14 1. 78 g h j 0 10 k 2. 92 3. 81 no t e s : l 7. 62 8. 26 1. d i m e n s i o n s ?a ?, ?b ? d o n o t i n cl u d e m o l d f l as h o r p r o t r u s i o n s . m 0. 2 0 . 3 6 m a x i m u m m o l d f l a s h o r p r o t r u s i o n s 0. 25 m m ( 0 . 010) p e r s i d e . n 0. 38 d su f f i x so i c (m s - 0 1 3 a d) sy m b o l m i n m a x a 10. 1 10. 5 b 7. 4 7 . 6 c 2. 35 2. 65 d 0. 33 0. 51 f 0. 4 1 . 2 7 g h no t e s : j 0 8 1. d i m e n s i o ns a a n d b d o no t i n c l ud e m o l d f l a s h o r p r ot r u s i on . k 0. 1 0 . 3 2. m a x i m u m m o l d f l a s h o r p r o t r u s i o n 0. 15 m m ( 0 . 006) p e r s i d e m 0. 23 0. 32 fo r a ; fo r b ? 0. 25 m m ( 0 . 010) p e r s i d e . p 10 10. 65 r 0. 25 0. 75 2. 54 7. 62 1. 27 d i me n s i o n , mm d i me n s i o n , mm a b h c k c m j f m g d r x 4 5 se a t i n g pl an e 0. 25 ( 0 . 010 ) m t -t - 1 18 9 10 l h m j a b f g d se a t i n g pl an e n k 0.2 5 ( 0 . 010 ) m t -t - c 1 18 9 10

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