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Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 7

Technical content

Features

  • >500 Mbps (250 MHz) switching rates
  • Flow-through pinout simplifies PCB layout
  • Low Voltage Differential Signaling with output voltages of ±350mV into: – 100-ohm load (PI90LV047) – 50-ohm load (PI90LVB047)
  • 300ps typical differential skew
  • 400ps maximum differential skew
  • 1.7ns maximum propagation delay
  • 3.3V power supply design
  • ±350mV differential signaling
  • Bus-Pin ESD protection >10kV
  • Interoperable with existing 5V LVDS receivers
  • High impedance on LVDS outputs on power down
  • Conforms to TIA/EIA-644 LVDS Standard
  • Industrial operating temperature range (–40°C to +85°C)
  • Packages (Pb-free & Green Available): – 16-pin SOIC (S) – 16-pin TSSOP (L)

Description

The PI90LV047A/PI90LVB047A are quad flow-through differential line drivers designed for applications requiring ultra-low power dissipation and high data rates. The devices are designed to support data rates in excess of 400 Mbps (200 MHz) using Low Voltage Differential Signaling (LVDS) technology. The PI90LV047A/PI90LVB047A accept low-voltage TTL/CMOS input levels and translates them to low-voltage (350 mV) differential output signals. The PI90LVB047A doubles the output drive current to achieve Bus LVDS signaling levels with a 50-ohm load. A doubly terminated Bus LVDS line enables multipoint configurations. In addition, the driver supports a 3-state function that may be used to disable the output stage, disabling the load current, and thus dropping the device to an ultra low idle power state of 13mW typical. The devices have a flow- through pinout for easy PCB layout. The EN and EN inputs are banded together and control the 3-state outputs. The enables are common to all four drivers. The intended application of these devices and signaling technique is for both point-to-point baseband (PI90LV047A) and multipoint (PI90LVB047A) data transmission over controlled impedance media. 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI90LV047A/PI90LVB047A 3V LVDS Quad Flow-Through Differential Line Drivers selbanEt upnIs tuptuO NEN ED NI D +TUO D –TUO Hn epOroL LL H HH L stupniELBANEfosnoitanibmocrehtollAX Z Z Truth TableDIN4 DIN3 DIN2 DIN1 EN EN DOUT1+ DOUT1– DOUT2+ DOUT2– DOUT3+ DOUT3– DOUT4+ DOUT4– DOUT1– DOUT1+ DOUT2+ DOUT2– DOUT3– DOUT3+ DOUT4+ DOUT4– EN DIN1 DIN2 GND DIN3 DIN4 EN VCC Pin Configuration

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Electrical Characteristics

Over supply voltage and operating temperature ranges, unless otherwise specified (2,3,4). Absolute Maximum Ratings Short Circuit Duration Maximum Package Power Dissipation @ +25°C Lead Temperature Range ESD Rating (10) Recommended Operating Conditions Min Typ Max Units Supply Voltage (VCC) +3.0 +3.3 +3.6 V Operating Free Air Temperature (TA) –40 +25 +85 °C

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1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI90LV047A/PI90LVB047A 3V LVDS Quad Flow-Through Differential Line Drivers Notes 1. “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices should be operated at these limits. The table of “Electrical Characteristics” specifies conditions of device o peration. 2. Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenc ed to ground except: VOD1 and ∆VOD1. 3. All typicals are given for: V CC = +3.3V, TA = +25°C. 4. The PI90LV047A is a current mode device and only functions within datasheet specifications when a resistive load is applied t o the driver outputs typical range is (90 ohms to 110 ohms). 5. t SKD1 |tPHLD – tPLHD | is the magnitude difference in differential propagation delay time between the positive going edge and the negative going edge of the same channel. 6. t SKD2 is the Differential Channel-to-Channel Skew of any event on the same device. 7. t SKD3, Differential Part to Part Skew, is defined as the difference between the minimum and maximum specified differential propagati on delays. This specification applies to devices at the same V CC and within 5°C of each other within the operating temperature range. 8. t SKD4, part to part skew, is the differential channel-to-channel skew of any event between devices. This specification applies to devices over recommended operating temperature and voltage ranges, and across process distribution. t SKD4 is defined as |Max – Min| differential propagation delay. 9. Generator waveform for all tests unless otherwise specified: f = 1 MHz, Z O = 50 ohms, t r ≤1 ns, and t f ≤1ns. 10. ESD Ratings: HBM (1.5 kohms, 100pF) ≥10kV EIAJ (0 ohm, 200pF) ≥1200V 11. Output short circuit current (I OS) is specified as magnitude only, minus sign indicates direction only. 12. C L includes probe and jig capacitance. 13. All input voltages are for one channel unless otherwise specified. Other inputs are set to GND. 14. f MAX generator input conditions: t r = tf <1ns (0% to 100%), 50% duty cycle, 0V to 3V. Output Criteria: duty cycle = 45%/55%, V OD >250mV, all channels switching. Switching Characteristics lobmySr etemaraPs noitidnoCtseT. niM. pyT. xaMs tinU t DLHP woLothgiHyaleDnoitagaporPlaitnereffiD RL )740VL(smho001= RL )740BVL(smho05= CL Fp51= )3dna2serugiF( 5.08 .09 .1 t DHLP hgiHotwoLyaleDnoitagaporPlaitnereffiD 5.02 .19 .1 t 1DKS twekSesluPlaitnereffiD DLHP t DHLP )5( 03 .04 .0 t 2DKS wekSlennahC-ot-lennahC )6( 04 .05 .0 t 3DKS wekStraP-ot-traPlaitnereffiD )7( 00 .1 t 4DKS wekStraP-ot-traPlaitnereffiD )8( 02 .1 t HLT emiTesiR 5.05 .1 t LHT emiTllaF 5.05 .1 t ZHP ZothgiHemiTelbasiD RL )740VL(smho001= RL )740BVL(smho05= CL Fp51= )5dna4serugiF( t ZLP ZotwoLemiTelbasiD 5 t HZP hgiHotZemiTelbanE 7 t LZP woLotZemiTelbanE 7 f XAM ycneuqerFgnitarepOmumixaM )41( zHM

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Figure 1. Driver VOD and VOS Test Circuit Figure 2. DriverPropagation Delay & Transition Time Test Circuit Figure 3. Driver Propogation Delay and Transition Time Waveforms

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Figure 4. Drive 3-State Delay Test Circuit Figure 5. Driver 3-State Delay Waveform Figure 6. Point-to-Point Application

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Ordering Information

Ordering Code Package Code Package Type PI90LV047AW W 16-pin SOIC PI90LV047AWE W Pb-free & Green, 16-pin SOIC PI90LV047AL L 16-pin TSSOP PI90LV047ALE L Pb-free & Green, 16-pin TSSOP PI90LVB047AW W 16-pin SOIC PI90LVB047AWE W Pb-free & Green, 16-pin SOIC PI90LVB047AL L 16-pin TSSOP PI90LVB047ALE L Pb-free & Green, 16-pin TSSOP Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com