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lvds interface ics 4bit lvds transceiver BU90LV049 description lvds interface ic of rohm "serializer" "deserializer " operate from 8mhz to 150mhz wide clock range, and number of bits range is from 35 to 70. data is transm itted seven times (7x) stream and reduce cable number by 3(1/3) or less. the rohm's lvds has low swing mode to be able to expect further low emi. driver and receiver of 4 bits operate to 250mhz. it can be used for a variety of purposes, home appliances such as lcd-tv, business machines such as decoders, instruments, and medical equipment. features >500 mbps (250 mhz) switching rates flow-through pinout simplifies pcb layout. 400 ps typical driver channel-to-channel skew 150 ps typical receiver channel-to-channel skew 3.3v single power supply design 200mv and 350mv selectable di fferential signaling (driver) 6ma and 8ma selectable output drive strength (receiver) 3-state output control internal fail-safe biasing of receiver inputs high impedance on lvds outputs on power down conforms to tia/eia -644-a lvds standard industrial operating temperature range (-40 to +85) applications car navigation system copier digital tv (signal system) fa equipment medical equipment vending machine, ticket vending machine precaution this chip is not designed to protect from radioactivity. jun. 2008
2 / 14 block diagram r1 r out1 r in 1- r in 1+ r2 r out2 r in 2+ r in 2- d2 d out2- d out2+ d in 2 d1 d out1- d out1+ d in 1 en sl figure 1. block diagram
3 / 14 ssop-b16 package outline and specification figure 2. ssop-b16 package outline and specification 5.0 0.2 product no. 16 9 0.3 min 6.4 0.3 4.4 0.2 0.22 0.1 0.10 1.15 0.1 lv049 lot no. 1pin mark 0.65 1 8 0.15 0.1 unit : mm 0.10
4 / 14 pin configuration figure 3. pin diagram (top view) 16 15 14 13 12 11 d in1 10 sl 9 r in1- 1 2 3 4 5 6 7 8 r in1+ r in2+ r in2- d out2- d out2+ d out1+ d out1- d in2 vcc gnd r out2 r out1 en
5 / 14 pin description table 1 : pin description pin name pin no. type descriptions din 10, 11 lvcmos in driver input pin, lvcmos levels. dout+ 6, 7 lvds out non-inverting driver out put pin, lvds levels. dout- 5, 8 lvds out inverting driver outpu t pin, lvds levels. rin+ 2, 3 lvds in non-inverting receiv er input pin, lvds levels. rin- 1, 4 lvds in inverting receiver input pin, lvds levels. rout 14, 15 lvcmos out receiver output pin, lvcmos levels. sl 9 lvcmos in drive strength and swing level select pin : when sl is low or open, rout set 8ma mode and the driver is normal swing level (350mv). when sl is high, rout set 6m a mode and the driver is reduce swing level (200mv). en 16 lvcmos in enable pin: when en is low or open, the receiver and driver are disabled. when en is high, the receiver and driver are enabled. vcc 12 power power supply pin, +3.3v0.3v. gnd 13 gnd ground pin.
6 / 14 function description driver truth table input outputs swing level en sl d in d out+ d out- h l or open l l h 350mv h h l h h l l h 200mv h h l all other combinations of en, sl inputs x z z receiver truth table input outputs drive strength en sl r in+ ? r in? r out h l or open vid ??? 0v h 8ma vid ? ? ?0.1v l full fail-safe open/short or terminated h h h vid ?? 0v h 6ma vid ? ? ?0.1v l full fail-safe open/short or terminated h all other combinations of en, sl inputs x z
7 / 14 absolute maximum ratings item symbol value unit min. max. supply voltage v cc -0.3 4.0 v input voltage v in -0.3 v cc +0.3 v output voltage v out -0.3 v cc +0.3 v storage temperature range tstg -55 150 package power package pd(mw) derating(mw/ ) 1 ssop-b16 400 4.0 450 *2 4.5 *2 1 at temperature ta > 25 2 package power when mounting on the pcb board. the size of pcb board :70 70 1.6 mm 3 the material of pcb board :the fr 4 glass epoxy board.(3% or les s copper foil area) recommended operating conditions item symbol value unit condition min. typ. max. supply voltage v cc 3.0 3.3 3.6 v operating temperature range topr -40 25 85
8 / 14 dc characteristics symbol parameter conditions pin min typ max units lvcmos input dc specification (driver inputs, enable pins) v ih input high voltage d in en sl v cc 0.8 - v cc v v il input low voltage gnd - v cc 0.2 v i i input current v in = 0v or v cc -10 - +10 a v cl input clamp voltage v cl = -18ma -1.5 -0.8 - v lvds output dc specifi cation (driver output) |v od1 | differential output voltage sl= gnd , r l = 100 (figure 4) d out- d out+ 250 350 450 mv |v od2 | differential output voltage sl= v cc , r l = 100 (figure 4) 120 200 300 mv v od change in magnitude of v od for complementary output states sl = v cc or gnd, r l = 100 (figure 4) - 1 35 |mv| v os offset voltage 1.125 1.25 1.375 v v os change in magnitude of vos for complementary output states - 1 25 |mv| i os output short circuit current enabled, d in = v cc , d out+ = 0v or d in = gnd, d out- = 0v - -5.4 -9.0 ma i osd differential output short circuit current enabled, v od = 0v - -5.4 -9.0 ma i oz output 3-state current en = 0v and sl = v cc v out = 0v or v cc -10 1 +10 a lvds input dc specification (receiver inputs) v th differential input high threshold v cm = 1.2v, 0.05v, 2.35v r in+ r in- - - 100 mv v tl differential input low threshold -100 - - mv v cmr common-mode voltage range v id = 200mv pk to pk 0.1 - 2.3 v i in input current v in = 0 or vcc -20 - +20 a lvcmos output dc specifica tion (receiver outputs) v oh1 output high voltage i oh = ?8 ma, v id = +200 mv, sl=gnd r out v cc - 0.4 - - v v oh2 output high voltage i oh = ?6 ma, v id = +200 mv, sl = v cc v cc - 0.4 - - v ol1 output low voltage i ol = 8 ma, v id = ?200 mv, sl=gnd - - 0.4 v v ol2 output low voltage i ol = 6 ma, v id = ?200 mv, sl = v cc - - 0.4 i oz output 3-state current disabled, v out = 0v or v cc -10 1 +10 a general dc specifications i cc power supply current en = vcc and sl = 0v v cc - 12 - ma i ccz tri-state supply current en = 0v and sl = 0v - 2 - ma
9 / 14 switching characteristics symbol parameter conditions min typ max units lvds outputs (driver outputs) t phld differential propagation delay high to low r l = 100, c l = 15pf 0.5 1.7 2.8 ns t plhd differential propagation delay lo w to high (figure 5 and figur e 6) 0.5 1.7 2.8 ns t skd1 differential pulse skew |t phld C t plhd | 0 0.3 0.4 ns t skd2 differential channel-to-channel skew 0 0.4 0.5 ns t skd3 differential part to part skew 0 - 1.0 ns t tlh rise time - 0.5 1.5 ns t thl fall time - 0.5 1.5 ns t phz disable time high to z r l = 100, c l = 15pf - 2 5 ns t plz disable time low to z (figur e 7 and figure8) - 2 5 ns t pzh enable time z to high - 3 7 ns t pzl enable time z to low - 3 7 ns f max maximum operating frequency 250 - - mhz lvcmos outputs (receiver outputs) t phl propagation delay high to low c l = 15pf v id = 200mv 1.2 2.0 3.7 ns t plh propagation delay low to high (figure 9 and figure 10) 1.2 1.9 3.7 ns t sk1 pulse skew |t phld C t plhd | 0 0.1 0.4 ns t sk2 channel-to-channel skew 0 0.15 0.5 ns t sk3 part to part skew - - 1.0 ns t tlh rise time - 0.5 1.5 ns t thl fall time - 0.5 1.5 ns t phz disable time high to z r l = 2k - 8 14 ns t plz disable time low to z c l = 15pf - 8 14 ns t pzh enable time z to high (figure 11 and figure 12) - 3 14 ns t pzl enable time z to low - 9 14 ns f max maximum operating frequency 250 - - mhz
10 / 14 parameter measurement information figure 4. driver vod and vos test circuit d d in d out + d out - driver enabled generator rl cl cl 50 figure 5. driver propagation de lay and transition time test ci rcuit figure 6. driver propagation de lay and transition time wavefor ms d v cc gnd s1 d in v os rl/2 d out + d out - v od rl/2 driver enabled d in d out - d out + v diff 1.5v plhd 0vdifferential) 80 0v 20 tlh 80 0v 20 thl 0v 1.5v phld 3v 0v v oh v ol v diff = d out + - d out -
11 / 14 d d out + d out - 1/ 4 BU90LV049 generator cl cl 50 50 50 +1.2v d in v cc gnd en driver) figure 7. driver 3-st ate delay test circuit 1.5v phz 1.5v pzh 3v 0v 50 1.2v v oh 1.2v v ol 50 plz pzl 50 50 d out + when d in = vcc d out -when d in = gnd d out + when d in = gnd d out -when d in = vcc en when sl = l or open figure 8. driver 3-state delay waveform
12 / 14 r r in+ receiver enabled generator 50 r in- cl r out 50 figure 9. receiver propagation delay and transition time test circuit r in - r in + r out 0v differential 80 1.5v 20 tlh 80 1.5v 20 thl +1.2v +1.3v +1.1v plhd phld v oh v ol v id = 200mv figure 10. receiver propagation delay and transition time wave forms 1/ 4 BU90LV049 generator cl 50 en device under test r out rl r in+ r in- v cc s 1 receiver) figure 11. receiver 3-s tate delay test circuit
13 / 14 1.5v phz 1.5v pzh 3v 0v 50 v ol 0.5v plz pzl 50 en when sl = l or open output when v id = -100mv output when v id = +100mv v oh gnd v cc 0.5v figure12. receiver 3-state delay waveforms typical application lvds receiver rt 100 data output enable data input lvds driver figure 13. point-to-point application d in d out - d out + v od 0v(diff.) 0v 3v 0v v oh v ol single-ended v os (1.25v typical) d out + - d out - differential output +vod -vod +v ss figure 14. driver output levels
catalog no.08t185a '08.6 rohm ?
notes no technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of rohm co.,ltd. the contents described herein are subject to change without notice. the specifications for the product described in this document are for reference only. upon actual use, therefore, please request that specifications to be separately delivered. application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. rohm co.,ltd. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by rohm co., ltd. is granted to any such buyer. products listed in this document are no antiradiation design. appendix1-rev2.0 thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact your nearest sales office. rohm customer support system the americas / europe / asia / japan contact us : webmaster@ rohm.co. jp www.rohm.com copyright ? 2008 rohm co.,ltd. the products listed in this document are designed to be used with ordinary electronic equipment or de vices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of which would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. it is our top priority to supply products with the utmost quality and reliability. however, there is always a chance of failure due to unexpected factors. therefore, please take into account the derating characteristics and allow for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in order to prevent possible accidents that may result in bodily harm or fire caused by component failure. rohm cannot be held responsible for any damages arising from the use of the products under conditions out of the range of the specifications or due to non-compliance with the notes specified in this catalog. 21 saiin mizosaki- cho, ukyo-ku, kyoto 615-8585, japan tel : +81-75-311-2121 fax : +81-75-315-0172 appendix

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