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september 2005 1/21 21 rev. 1 STMAV340 low on resistance quad, spdt, wide-bandwidth video switch features bi-directional operation 4 input/output channels analog video switch wide bandwidth 300mhz low 4 switch resistance between two ports excellent r on matching between channels minimal propagation delay through the switch low quiescent current consumption v cc operating range: 4.0v to 5.5v zero bounce in flow-through mode control inputs compatible with ttl level all input/output pins are on the same side facilitates pcb routing data and control inputs provide the undershoot clamp diode guaranteed break-before-make timing high esd rating: > 2kv hbm ?40c to 85c operating temperature range suitable for both rgb and composite-video switching available in a small tssop16 package applications advanced tvs front projectors lcd monitors notebook pcs dvd players order codes description the STMAV340 is a bidirectional quad (4 channel), high speed single pole/double throw (spdt), low power cmos ttl-compatible analog video switch designed for advanced video applications which demand superior image quality. the low on resistance (r on ) of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. STMAV340 is designed for very low cross-talk, low bit-to-bit skew, high channel-to-channel noise isolation, and low i/o capacitance. the switch offers very little or practically no attenuation of the high speed signals at the outputs, thus preserving the signal integrity enough to pass stringent requirements. the STMAV340 is able to simplify the pcb routing on inputs and outputs as well as reduce the overall bom costs by eliminating the need for more costly input-output controllers. tssop16 www.st.com part number temperature range package comments STMAV340 ?40 c to +85 c tssop16 STMAV340ttr
STMAV340 2/21 contents 1 summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 application diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 power supply sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 test circuit and diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
STMAV340 1 summary description 3/21 1 summary description 1.1 functional description the STMAV340 is a high bandwidth, analog video switch. it is low on-resistance and low i/o capacitance result in a very small propagation delay. when oe_n is set to low, the select (s) pin connects port a to the selected port b or port c output. when oe_n is set to high, the switch is open and a high-impedance state exists between the a port and b/c ports. low differential gain and phase make this switch ideal for component and rgb video applications. this device has high bandwith and low crosstalk, making it ideal for high frequency applications as well. figure 1. functional diagram fl ow cont rol 1 a 2 a 3 a 4 a 1b 1c 2b 2c 3b 3c 4b 4c oe_ n s fl ow cont rol 1 a 2 a 3 a 4 a 1b 1c 2b 2c 3b 3c 4b 4c oe_ n s
2 pin configuration STMAV340 4/21 2 pin configuration table 1. pin description note: 1 tie to v cc through a pull-up resistor. the minimum value of the resistor is determined by the current-sinking capability of the driver. table 2. truth table figure 2. pin configuration (top view ) symbol type name and functions oe_n in bus switch enable note: 1 s in select input 1a ,2a ,3a ,4a in/out port a; analog video i/os 1b ,2b ,3b ,4b in/out bus b; analog video i/os 1c, 2c, 3c, 4c in/out bus c; analog video i/os v cc power supply gnd ground oe_n s on switch 0 0 1b,2b,3b,4b 0 1 1c,2c,3c,4c 1 x disabled 1 b 1 c 2 b 2 c 3 b 3 c 4 b 4 c v cc oe_ n s 1a 2a 3a 4a gnd 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 b 1 c 2 b 2 c 3 b 3 c 4 b 4 c v cc oe_ n s 1a 2a 3a 4a gnd 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
STMAV340 3 application diagrams 5/21 3 application diagrams 3.1 power supply sequencing proper power-supply sequencing is advised for all cmos devices. applying v cc before sending any signals to the input/output or control pins is recommended. figure 3. STMAV340 2-to-1 analog video switch used in an lcd tv figure 4. STMAV340 1-to-2 analog video switch used in a pc
4 maximum ratings STMAV340 6/21 4 maximum ratings stressing the device above the rating listed in the ?absolute maximum ratings? table may cause permanent damage to the device. these are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. refer also to the stmicroelectronics sure program and other relevant quality documents. table 3. absolute maximum ratings t a = 25 c, gnd= 0v note: absolute maximum ratings are those values above which damage to the device may occur. functional operation under these conditions is not implied. all voltages are referenced to gnd. symbol parameter value unit v cc supply voltage to ground -0.5 to + 7.0 v v s dc switch voltage -0.5 to + 7.0 v v in dc input voltage -0.5 to + 7.0 v i ik dc input diode current -50 ma i out dc output sink current 128 ma i cc /i gnd dc v cc /gnd current 100 ma t stg storage temperature range -65 to 150 c
STMAV340 5 electrical characteristics 7/21 5 electrical characteristics table 4. recommended operating conditions t a = -20 to +70 c note: 1 unused control inputs must be held high or low. they should not float. 2 in accordance with iec61000-4-2, level 4 table 5. dc electrical characteristics t a = -40c to +85c note: 1 measured by the voltage drop between pin a and b/c pins at the indicated current through the switch. on resistance is determined by the lower of the voltages on the two (a or b/c) pins. symbol parameter ( note: 1 ) test conditions min. typ. max. unit v cc power supply voltage 4.0 5.5 v v in input voltage 05.5v v out output voltage 05.5v t r, t f input rise and fall time switch control input 0 5 ns/v switch i/o 0 dc ns/v t a free air operating temperature -40 +85 c v esd esd-human body model (hmb) note: 1 -2 +2 kv symbol parameter test conditions v cc (v) min. typ. max. unit analog signal range 5 0 2.0 v v ik clamp diode voltage i in = -18ma 4.5 -1.2 v v ih high level input voltage 4.0-5.5 2.0 v v il low level input voltage 4.0-5.5 0.8 v i i input leakage current 0 v in 5.5v 5.5 10 a i off off-state leakage current 0 a, b v cc , c v cc 5.5 10 a r on switch on resistance ( 1 ) v in = 1.0v, i on = 13ma 4.5 3 7 v in = 2.0v, i on = 26ma 4.5 7 10 i cc quiescent supply current v in = v cc or gnd, i out = 0 5.5 3 a i cc increase in i cc per input one input at 3.4v other inputs at v cc or gnd 5.5 2.5 ma
5 electrical characteristics STMAV340 8/21 table 6. ac electrical characteristics t a = -40c to +85c, c l = 20pf, ru = rd = 75 table 7. capacitance symbol parameter test conditions v cc = 4.5 - 5.5v v cc = 4.0v unit min. typ. max. min. max. t pzh , t pzl output enable time, select to bus b/c v i = 7v for t pzl v i = open for t phz 5.2 5.7 ns ns output enable time, oe_n to bus a, b/c 5.1 5.6 t phz , t plz output disable time, select to bus b/c v i = 7v for t plz v i = open for t phz 5.2 5.5 ns ns output disable time, output enable time oe_n to bus a, b/c 5.5 5.5 b w -3db bandwidth r l = 150 t a = 25c 300 mhz x talk crosstalk r in = 10 r l = 150 , 10 mhz -58 db d g differential gain rl = 150 f = 3.58 mhz 0.64 % d p differential phase rl = 150 f = 3.58 mhz 0.1 deg. p irr off isolation rl = 150 10 mhz -60 db symbol parameter test conditions min. typ. max. unit c in control pin input capacitance v cc = 5.0v 3pf c i/o input/output capacitance a port v cc oe_n = 5.0v 7pf input/output capacitance b/c port 5 pf c on switch on capacitance v cc = 5.0v, oe_n = 0.0v 12 pf
STMAV340 6 test circuit and diagrams 9/21 6 test circuit and diagrams note: cl includes probe and jig capacitance. all input pulses are supplied by generators having the following characteristics: prr = 10mhz, zo = 50 , tr,tf = 2.5ns. figure 5. ac test circuit c l 20 pf rd 7 5 ? ?
6 test circuit and diagrams STMAV340 10/21 figure 6. ac waveforms t f = 2. 5ns t r = 2. 5ns 3. 0v 1. 5v gnd 1. 5v 10% 90% 90% 10% enable input t pzl t pzh t phz t plz v ol + 0. 3 v v ol v oh v oh ?0.3 v output 1. 5 v output 1. 5 v t f = 2. 5ns t r = 2. 5ns 3. 0v 1. 5v gnd 1. 5v 10% 90% 90% 10% enable input t pzl t pzh t phz t plz v ol + 0. 3 v v ol v oh v oh ?0.3 v output 1. 5 v output 1. 5 v
STMAV340 6 test circuit and diagrams 11/21 figure 7. on resistance test circuit
6 test circuit and diagrams STMAV340 12/21 table 8. test circuit test v cc r l c l v 2b v 2c t on 4.75v 0.75v 4.75v 0.75v 75 75 20 20 gnd v cc v cc gnd t off 4.75v 0.75v 4.75v 0.75v 75 75 20 20 gnd v cc v cc gnd figure 8. turn-on/turn-off test circuit and timing diagram
STMAV340 6 test circuit and diagrams 13/21 differential gain and phase are measured at the output of the on channel. for example, when v sel = 0, v oe_n = 0 and 1a is the input, the output is measured at 1b. figure 9. differential gain/phase measurement test circuit
6 test circuit and diagrams STMAV340 14/21 frequency response is measured at the output of the on channel. for example, when v sel = 0, v oe_n = 0 and 1a is the input, the output is measured at 1b. all unused analog i/o ports are left open. figure 10. frequency response (bw) test circuit
STMAV340 6 test circuit and diagrams 15/21 a 50 termination resistor is needed for the network analyzer. crosstalk is measured at the output of the non-adjacent on channel. for example, v sel = 0, v oe_n = 0, and 1a is the input, the output is measured at 1c. all unused analog input ports are connected to gnd through io- ports and the output ports are connected to gnd through the 50 pull down resistors. figure 11. crosstalk test circuit
6 test circuit and diagrams STMAV340 16/21 a 50 termination resistor is needed for the network analyzer. off-isolation is measured at the output of the off channel. for example, when v sel = v cc , v oe_n = 0 and 1a is the input, the output is measured at 1b. all unsued analog input ports are left open, and the output ports are connected to gnd through the 50 pulldown resistors. figure 12. off-isolation test circuit
STMAV340 6 test circuit and diagrams 17/21 figure 13. i/o pin (input side) esd protection circuit figure 14. i/o pin (output side) esd protection circuit figure 15. s and oe_n input esd protection circuit
7 package mechanical data STMAV340 18/21 7 package mechanical data in order to meet environmental requirements, st 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 st trademark. ecopack specifications are available at: www.st.com.
STMAV340 7 package mechanical data 19/21 figure 16. tssop16 mechanical data dim. mm inch min. typ. max. min. typ. max. a1.10.433 a1 0.05 0.10 0.15 0.002 0.004 0.006 a2 0.85 0.9 0.95 0.335 0.354 0.374 b 0.19 0.30 0.0075 0.0118 c 0.09 0.20 0.0035 0.0079 d 4.9 5 5.1 0.193 0.197 0.201 e 6.25 6.4 6.5 0.246 0.252 0.256 e1 4.3 4.4 4.48 0.169 0.173 0.176 e 0.65 bsc 0.0256 bsc k0 o 4 o 8 o 0 o 4 o 8 o l 0.50 0.60 0.70 0.020 0.024 0.028 c e b a2 a e1 d 1 pin 1 identification a1 l k e tssop16 mechanical data
8 revision history STMAV340 20/21 8 revision history date revision description of change 09-sep-2005 1 first issue
STMAV340 8 revision history 21/21 i nformation furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the con sequence s o f use of such information nor for any infringement of patents or other rights of third parties which may result from its use. n o license is grante d b y implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publicatio n are subje ct t o change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics produ cts are n ot a uthorized for use as critical components in life support devices or systems without express written approval of stmicroelectron ics. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners ? 2005 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

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