september 2003 1/9 stv6400 double scart interface n two periplugs i/o source management n two 150 w integrated buffers for plug drive n one output with muting capability n 3 digital buffer outputs for external switches control n large supply voltage range n bandwidth : 19 mhz typ. n crosstalk : 50 db (min.) n i 2 c bus control description the stv6400 is a bipolar circuit for tv and vcr applications. it is intended to process all switches relating to a 2 periplugs i/o application figure 1. pin connections dip20 (plastic package) order code: stv6400 so20 (plastic package) 6400-01.eps 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 nc out 1 video in 1 dig buffer 1 video in 2 dig buffer 2 video in 3 sda video in 4 v cc nc out 2 out 3 gnd dig buffer 3 video in 5 scl pv pv pv cc1 cc2 cc3 1
stv6400 2/9 figure 2. block diagram 6400-02.eps 2 3 4 9 18 19 20 11 14 clamp bus decoder clamp clamp clamp clamp 6 8 10 12 -6db 5 7 13 dig buffer 1 dig buffer 2 dig buffer 3 bus bus bus bus bus bus 15 16 75 w 75 w 75 w 75 w 75 w 75 w 75 w 75 w 75 w 0db 6db 6db out 1 out 2 out 3 sda scl vpv cc cc1 pv cc2 pv cc3 in 1 in 2 in 3 in 4 in 5 switch 1 switch 2 switch 3 pos 1 pos 2 pos 3 pos 4 pos 5 pos 6 pos 1 pos 2 pos 3 pos 1 pos 2 pos 3 pos 4 mute stv6400 4.7k w typical coupling capacitors = 100nf 1
stv6400 3/9 absolute maximum ratings thermal data dc and ac electrical characteristics v cc = 5v, t amb = 25 oc (unless otherwise specified) r load out 1= 4.7k w , r load out2 out3 = 150 w , v in = 1v pp * dip20 package. symbol parameter value unit v cc supply voltage 12.0 v t oper operating temperature -10, + 70 o c t stg storage temperature -55, + 150 o c symbol parameter value unit r th (j-a) junction-ambient thermal resistance dip20 so20 70 100 c/w c/w symbol parameter test conditions min. typ. max. unit v cc operating supply voltage 4, 75 5 11.0 v i cc supply current without loads 27 40 ma svr supply voltage rejection 1khz -36 db video inputs v dcin dc input voltage (black level) 1, 4 4 v i lcak leakage current input 1 3 a capin input capacitance 5 pf v in0 input signal amplitude video 4 2.5 v pp v in6 input signal amplitude video 1 2 3 5 1.5 v pp video outputs dyn dynamic output signal (out 1) v cc = 5v 2, 5 v pp dyn dynamic output signal (out 1) v cc = 4.75v 2, 3 v pp dyn dynamic output signal (out 2, 3 v cc = 5v v cc = 4.75v 3 2.8 v pp v pp bw0 0db gain bandwidth at -3db v in = 1v pp 10 23 mhz bw6 6db gain bandwidth at - 3db v in = 1v pp 10 19 mhz ct* crosstalk between input 1, 2, 3, 5 and output 2, 3 v in = 1v pp , f = 5mhz -62 -53 db ct* crosstalk between input 4, and output 2, 3 v in4 = 2v pp , f = 5mhz -60 -52 db ct* crosstalk between input 1, 2, 3, 5 and output 1 v in = 1v pp , f = 5mhz -60 -55 db ct* crosstalk between input 4 and output 1 v in4 = 2v pp , f = 5mhz -53 -50 db z out output impedance 410w g 0 0db gain -0.5 0 +0.5 db g 6 6db gain 5.5 6 6.5 db dcout dc output voltage 0.7 v dph10 differential phase 0db output v in =1v pp 0.25 dphl6 differential phase 6db output v in =1v pp 0.5 dgain0 differential gain 0db output v in =1v pp 1.5 % dgain6 differential gain 6db output v in =1v pp 1.8 % mute muting suppression at output 1 v in =1v pp , f = 5mhz -50 -45 db digital buffers v ol low level output voltage i = 3 ma 0, 4 v z out output resistance at high level 30 k w dcmax max dc voltage v cc v 1
stv6400 4/9 i2c bus characteristics figure 3. i2c bus timing symbol parameter test conditions min. max. unit scl v il low level input voltage - 0.3 + 1.5 v v ih high level input voltage 3.0 v cc + 0.5 v i li input leakage current v i = 0 to v cc - 10 + 10 a f scl clock frequency 0 100 khz t r input rise time 1.5v to 3v 1000 ns t f input fall time 1.5v to 3v 300 ns c i input capacitance 10 pf sda v il low level input voltage - 0.3 + 1.5 v v ih high level input voltage 3.0 v cc + 0.5 v i li input leakage current v i = 0 to v cc - 10 + 10 a c i input capacitance 10 pf t r input rise time 1.5v to 3v 1000 ns t f input fall time 1.5v to 3v 300 ns v ol low level output voltage i ol = 3ma 0.4 v t f output fall time 3v to 1.5v 250 ns c l load capacitance 400 pf timing t low clock low period 4.7 s t high clock high period 4.0 s t su , dat data set-up time 250 ns t hd , dat data hold time 0 340 ns t su , sto set-up time from clock high to stop 4.0 s t buf start set-up time following a stop 4.7 s t hd , sta start hold time 4.0 s t su , sta start set-up time following clock low-to high transition 4.7 s 6400-03.eps t buf t low t high t f t r t hd,sta t hd,dat t su,dat t su,sta t su,sto sda scl sda 1
stv6400 5/9 software specification i 2 c address byte 92 hexa data byte the starting condition upon power-on is undetermined. in this case 4 words of 16 bits are necessary to fix the device configuration. in other case only one word of 16 bits is necessary to modify one configuration of the device. b7 b6 b5 b4 b3 b2 b1 b0 xx00 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 switch 1 position 1 video in 1 position 2 video in 2 position 3 video in 3 position 4 video in 4 position 5 video in 5 position 6 mute not allowed not allowed xx01 x x x x 0 0 1 1 0 1 0 1 switch 2 position 1 video in 3 position 2 video in 4 position 3 video in 5 not allowed xx10 x x x x 0 0 1 1 0 1 0 1 switch 2 position 1 video in 1 position 2 video in 2 position 3 video in 4 position 4 video in 5 xx11 x x 1/0 x 1/0 x 1/0 x x digital buffer dig buffer 1 dig buffer 2 dig buffer 3 remark : the letter "x" means dont't care. example : xx00x100 means . the switch 1 is connected to video input 5 example : xx11x011 means. digital buffer 1 is at high level digital buffer 2 is at high level digital buffer 3 is at low level 1
stv6400 6/9 input/output pin configuration figure 4. figure 5. figure 6. 6400-04.eps pins 4-6 8-10-12 6400-05.eps pins 5 7-13 30k w 6400-08.eps pins 18 19-20 4pf 1pf 5.4k w 5k w pins 2 15-16 1
stv6400 7/9 figure 7. figure 8. 6400-06.eps pins 9-11 sda only esd prot 6400-07.eps circuit esd prot 3 14 v cc ground
stv6400 8/9 typical application figure 9. 6400-09.eps 6db g mute 6db a digital buffer digital buffer digital buffer main processing out1 to audio cmos switching in1 tuner out2 in2 peritv 1 out3 in3 peritv 2 in4 camcorder in5 satellite decoder gnd sda scl power i c decoder 2 stv6400 v cc v cc a = -6db g = 0db
stv6400 9/9 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics. the st logo is a registered trademark of stmicroelectronics ? 2003 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - u.s.a. www.st.com
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