LVDS Interface ICs 4bit LVDS Receiver BU90LV048 ●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 transmitted 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 ■150 ps channel-to-channel skew (typical) ■100 ps differential skew (typical) ■3.7 ns maximum propagation delay ■3.3V power supply design ■6mA and 8mA selectable output drive strength ■Accepts small swing (200 mV typical) differential signal levels ■Supports open, short and terminated input fail-safe ■Conforms to ANSI/TIA/EIA-644 Standard ■Industrial temperature operating 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. ■This document may be used as strategic technical data which subjects to COCOM regulations. Jun.2008 2 / 12 ●Block Diagram SL RIN1+ RIN1- RIN2+ RIN2- RIN3+ RIN3- RIN4+ RIN4- + R1 - ROUT1 + R2 - ROUT2 + R3 - ROUT3 + R4 - ROUT4 EN Figure 1. Block Diagram 3 / 12 ●SSOP-B16 Package Outline and Specification Product No. LV048 Lot No. 1PIN MARK Figure 2. SSOP-B16 Package Outline and Specification 4 / 12 ●Pin Configuration RIN1- 1 16 EN RIN1+ 2 15 ROUT1 RIN2+ 3 14 ROUT2 RIN2- 4 13 VCC RIN3- 5 12 GND RIN3+ 6 11 ROUT3 RIN4+ 7 10 ROUT4 RIN4- 8 9 SL Figure 3. Pin Diagram (Top View) 5 / 12 ●Pin Description Table 1 : Pin Description Pin Name Pin No. RIN+ 2, 3, 6, 7 LVDS In Non-inverting receiver input pin RIN- 1, 4, 5, 8 LVDS In Inverting receiver input pin ROUT 10, 11, 14, 15 LVCMOS Out Receiver output pin LVCMOS In Drive strength select pin : When SL is low or open, Rout set 8mA mode. When SL is high, Rout set 6mA mode. Receiver enable pin: When EN is Low or open, the receiver is disabled. When EN is high, the receiver is enabled. SL Type 9 LVCMOS In Descriptions EN 16 VCC 13 Power Power supply pin, +3.3V±0.3V GND 12 GND Ground pin ●Function Description EN SL H L or Open H H All other combinations of EN, SL inputs INPUT RIN+ − RIN− VID 0V VID −0.1V Full Fail-safe OPEN/SHORT or Terminated VID 0V VID −0.1V Full Fail-safe OPEN/SHORT or Terminated X 6 / 12 OUTPUTS ROUT H L Drive Strength 8mA H H L 6mA H Z ●Absolute Maximum Ratings Item Symbol Supply voltage Input voltage Output voltage Storage temperature range VCC VIN VOUT Tstg Value Min. Max. -0.3 -0.3 -0.3 -55 4.0 VCC+0.3 VCC+0.3 125 Unit V V V ℃ ●Package Power Package SSOP-B16 PD(mW) DERATING(mW/℃) ※1 400 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（mm3） The material of PCB board :The FR4 glass epoxy board.(3% or less copper foil area) ●Recommended Operating Conditions Min. Value Typ. Max. Vcc 3.0 3.3 3.6 V Topr -40 - 85 ℃ Item Symbol Supply voltage Operating temperature range 7 / 12 Unit Condition ●DC Characteristics Symbol Parameter Conditions Pin Min Typ Max Units VTH Differential Input High Threshold VCM = +1.2V, 0.05V, 2.95V RIN+, - - 100 mV VTL Differential Input Low Threshold RIN- -100 - - mV VID = 200mV pk to pk 0.1 - 2.3 V Input Current VIN = 0 or Vcc -20 - +20 μA VOH1 Output High Voltage IOH = −8 mA, VID = +200 mV, SL=low - - V VOH2 Output High Voltage IOH = −6 mA, VID = +200 mV, SL= high - - V VOL1 Output Low Voltage IOL = 8 mA, VID = −200 mV, SL=low - - 0.4 V VOL2 Output Low Voltage IOL = 6 mA, VID = −200 mV, SL= high - - 0.4 V IOS Output Short Circuit Current Enabled, VOUT = 0V -15 -80 - mA IOZ Output 3-STATE Current Disabled, VOUT = 0V or VCC -10 ±1 +10 uA VIH Input High Voltage SL VCC ×0.8 - VCC V VIL Input Low Voltage EN GND - VCC ×0.2 V VCMR Common-Mode Voltage Range IIN II VCL ICC ICCZ ROUT VCC0.4 VCC0.4 Input Current VIN = 0V or VCC, Other Input = VCC or GND -10 - +10 μA Input Clamp Voltage ICL = −18 mA -1.5 -0.8 - V - 1 - mA - 0.5 - mA No Load Supply Current Receivers Enabled No Load Supply Current Receivers Disabled EN = VCC, Inputs Open EN= GND, SL = GND, Inputs Open 8 / 12 VCC ●Switching Characteristics VCC = +3.3V ±0.3V, Topr = -40℃ to +85℃. Symbol Parameter Conditions Min Typ Max Units tPHLD Differential Propagation Delay High to Low CL = 15pF VID = 200mV 1.2 2.0 3.7 ns tPLHD Differential Propagation Delay Low to High (Figure 4 and Figure 5) 1.2 1.9 3.7 ns 0 0.1 0.4 ns tSKD1 Differential Pulse Skew |tPHLD – tPLHD| tSKD2 Differential Channel-to-Channel Skew; same device 0 0.15 0.5 ns tSKD3 Differential Part to Part Skew - - 1.0 ns tSKD4 Differential Part to Part Skew - - 1.5 ns tTLH Rise Time - 0.5 1.5 ns tTHL Fall Time - 0.5 1.5 ns tPHZ Disable Time High to Z RL = 2kΩ - 8 14 ns tPLZ Disable Time Low to Z CL = 15pF - 8 14 ns tPZH Enable Time Z to High (Figure 6 and Figure 7) - 3 14 ns tPZL Enable Time Z to Low - 9 14 ns fMax Maximum Operating Frequency 250 - - MHz All Channels Switching RIN+ Generator RIN- ROUT R CL 50Ω Figure 4. 50Ω Receiver ENABLED Receiver Propagation Delay and Transition Time Test Circuit 9 / 12 +1.3V RIN0V Differential VID = 200mV +1.2V RIN+ +1.1V ｔPLHD ｔPHLD ROUT 80％ 80％ 1.5V 1.5V VOH 20％ 20％ ｔTLH Figure 5. VOL ｔTHL Receiver Propagation Delay and Transition Time Waveforms VCC RIN+ EN RIN- Generator 50Ω RL DEVICE UNDER TEST 1/ 4 BU90LV048 Figure 6. Receiver 3-STATE Delay Test Circuit 10 / 12 S1 R OUT CL 3V EN WHEN SL = L or Open 1.5V 1.5V ｔPLZ 0V ｔPZL VCC OUTPUT WHEN VID = -100mV 50％ 0.5V VOL ｔPHZ ｔPZH VOH 0.5V OUTPUT WHEN VID = +100mV 50％ GND Figure7. Receiver 3-STATE Delay Waveforms Typical Application ENABLE 1/4 BU90LV048 DATA INPUT RT 100Ω 1/4 BU90LV047 Figure 8. Point-to-Point Application 11 / 12 DATA OUTPUT Catalog No.08T243A '08.6 ROHM ©