DS90CR483AVJD/NOPB

DS90CR483A, DS90CR484A www.ti.com SNLS291A – APRIL 2008 – REVISED APRIL 2013 DS90CR483A / DS90CR484A 48-Bit LVDS Channel Link SER/DES – 33 - 112 MHz Check for Samples: DS90CR483A, DS90CR484A FEATURES 1 • • • 2 • • • • • • • • • Up to 5.38 Gbits/sec Bandwidth 33 MHz to 112 MHz Input Clock Support LVDS SER/DES Reduces Cable and Connector Size Pre-emphasis Reduces Cable Loading Effects DC Balance Data Transmission Provided by Transmitter Reduces ISI Distortion Cable Deskew of +/−1 LVDS Data Bit Time (up to 80 MHz Clock Rate) 5V Tolerant TxIN and Control Input Pins Flow Through Pinout for Easy PCB Design +3.3V Supply Voltage Transmitter Rejects Cycle-to-Cycle Jitter Conforms to ANSI/TIA/EIA-644-1995 LVDS Standard Both Devices are Available in 100 Lead TQFP Package DESCRIPTION The DS90CR483A transmitter converts 48 bits of CMOS/TTL data into eight LVDS (Low Voltage Differential Signaling) data streams. A phase-locked transmit clock is transmitted in parallel with the data streams over a ninth LVDS link. Every cycle of the transmit clock 48 bits of input data are sampled and transmitted. The DS90CR484A receiver converts the LVDS data streams back into 48 bits of CMOS/TTL data. At a transmit clock frequency of 112MHz, 48 bits of TTL data are transmitted at a rate of 672Mbps per LVDS data channel. Using a 112MHz clock, the data throughput is 5.38Gbit/s (672Mbytes/s). The multiplexing of data lines provides a substantial cable reduction. Long distance parallel single-ended buses typically require a ground wire per active signal (and have very limited noise rejection capability). Thus, for a 48-bit wide data and one clock, up to 98 conductors are required. With this Channel Link chipset as few as 19 conductors (8 data pairs, 1 clock pair and a minimum of one ground) are needed. This provides an 80% reduction in cable width, which provides a system cost savings, reduces connector physical size and cost, and reduces shielding requirements due to the cables' smaller form factor. The 48 CMOS/TTL inputs can support a variety of signal combinations. For example, 6 8-bit words or 5 9-bit (byte + parity) and 3 controls. The DS90CR483A/DS90CR484A chipset is improved over prior generations of Channel Link devices and offers higher bandwidth support and longer cable drive with three areas of enhancement. To increase bandwidth, the maximum clock rate is increased to 112 MHz and 8 serialized LVDS outputs are provided. Cable drive is enhanced with a user selectable pre-emphasis feature that provides additional output current during transitions to counteract cable loading effects. Optional DC balancing on a cycle-to-cycle basis, is also provided to reduce ISI (Inter-Symbol Interference). With preemphasis and DC balancing, a low distortion eyepattern is provided at the receiver end of the cable. A cable deskew capability has been added to deskew long cables of pair-to-pair skew of up to +/−1 LVDS data bit time (up to 80 MHz Clock Rate). These three enhancements allow cables 5+ meters in length to be driven. The chipset is an ideal means to solve EMI and cable size problems associated with wide, high speed TTL interfaces. For more details, please refer to the Applications Information section of this datasheet. 1 2 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2008–2013, Texas Instruments Incorporated DS90CR483A, DS90CR484A SNLS291A – APRIL 2008 – REVISED APRIL 2013 www.ti.com Generalized Block Diagrams Generalized Transmitter Block Diagram Generalized Receiver Block Diagram 2 Submit Documentation Feedback Copyright © 2008–2013, Texas Instruments Incorporated Product Folder Links: DS90CR483A DS90CR484A DS90CR483A, DS90CR484A www.ti.com SNLS291A – APRIL 2008 – REVISED APRIL 2013 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Absolute Maximum Ratings (1) (2) −0.3V to +4V Supply Voltage (VCC) −0.3V to +5.5V CMOS/TTL Input Voltage LVCMOS/TTL Output Voltage −0.3V to (VCC + 0.3V) LVDS Receiver Input Voltage −0.3V to +3.6V LVDS Driver Output Voltage −0.3V to +3.6V LVDS Output Short Circuit Duration Continuous Junction Temperature +150°C Storage Temperature −65°C to +150°C Lead Temperature (Soldering, 4 sec.) 100L TQFP Maximum Package Power Dissipation Capacity @ 25°C 100 TQFP Package DS90CR483ANEZ Package Derating DS90CR483A ESD Rating DS90CR484A (1) (2) +260°C 2.3W DS90CR484ANEZ 2.3W DS90CR483ANEZ 18.1mW/°C above +25°C DS90CR484ANEZ 18.1mW/°C above +25°C (HBM, 1.5kΩ, 100pF) > 6 kV (EIAJ, 0Ω, 200pF) > 300 V (HBM, 1.5kΩ, 100pF) > 2 kV (EIAJ, 0Ω, 200pF) > 200 V “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be ensured. They are not meant to imply that the device should be operated at these limits. “Electrical Characteristics” specify conditions for device operation. If Military/Aerospace specified devices are required, please contact the TI Sales Office/Distributors for availability and specifications. Recommended Operating Conditions Min Nom Max Units Supply Voltage (VCC) 3.0 3.3 3.6 V Operating Free Air Temperature (TA) −10 +25 +70 °C 2.4 V 100 mVp-p 112 MHz Receiver Input Range 0 Supply Noise Voltage Input Clock (TX) 33 Copyright © 2008–2013, Texas Instruments Incorporated Product Folder Links: DS90CR483A DS90CR484A Submit Documentation Feedback 3 DS90CR483A, DS90CR484A SNLS291A – APRIL 2008 – REVISED APRIL 2013 www.ti.com Electrical Characteristics (1) Over recommended operating supply and temperature ranges unless otherwise specified. Symbol Parameter Conditions Min Typ (2) Max Units CMOS/TTL DC SPECIFICATIONS VIH High Level Input Voltage 2.0 VIL Low Level Input Voltage GND VOH High Level Output Voltage IOH = −0.4 mA VOL Low Level Output Voltage IOL = 2 mA VCL Input Clamp Voltage ICL = −18 mA IIN Input Current VIN = 0.4V, 2.5V or VCC IOH = −2mA IOS Output Short Circuit Current 2.7 3.3 2.7 2.85 −15 VIN = GND V 0.8 V V V 0.1 0.3 V −0.79 −1.5 V +1.8 +15 µA −120 mA 450 mV 35 mV 0 VOUT = 0V µA LVDS DRIVER DC SPECIFICATIONS |VOD| Differential Output Voltage RL = 100Ω ΔVOD Change in VOD between Complimentary Output States VOS Offset Voltage ΔVOS Change in VOS between Complimentary Output States IOS Output Short Circuit Current VOUT = 0V, RL = 100Ω IOZ Output TRI-STATE Current PD = 0V, VOUT = 0V or VCC 250 1.125 345 1.25 1.375 V 35 mV −3.5 −5 mA ±1 ±10 µA +100 mV LVDS RECEIVER DC SPECIFICATIONS VTH Differential Input High Threshold VTL Differential Input Low Threshold IIN Input Current VCM = +1.2V −100 mV VIN = +2.4V, VCC = 3.6V ±10 µA VIN = 0V, VCC = 3.6V ±10 µA TRANSMITTER SUPPLY CURRENT ICCTW Transmitter Supply Current Worst Case ICCTZ Transmitter Supply Current Power Down RL = 100Ω, CL = 5 pF, BAL = High, Worst Case Pattern (Figure 1 Figure 2) f = 33 MHz 91.4 140 mA f = 66 MHz 106 160 mA f = 112 MHz 155 210 mA 5 50 µA f = 33 MHz 125 150 mA f = 66 MHz 200 210 mA f = 112 MHz 250 280 mA 20 100 µA PD = Low Driver Outputs in TRI-STATE during power down Mode RECEIVER SUPPLY CURRENT ICCRW ICCRZ (1) (2) 4 Receiver Supply Current Worst Case Receiver Supply Current Power Down CL = 8 pF, BAL = High, Worst Case Pattern See (Figure 1 Figure 3) PD = Low Receiver Outputs stay low during power down mode. Current into device pins is defined as positive. Current out of device pins is defined as negative. Voltages are referenced to ground unless otherwise specified (except VTH, VTL, VOD and ΔVOD). Typical values are given for VCC = 3.3V and T A = +25°C. Submit Documentation Feedback Copyright © 2008–2013, Texas Instruments Incorporated Product Folder Links: DS90CR483A DS90CR484A DS90CR483A, DS90CR484A www.ti.com SNLS291A – APRIL 2008 – REVISED APRIL 2013 Recommended Transmitter Input Characteristics Over recommended operating supply and temperature ranges unless otherwise specified. Symbol Parameter Min Typ Max Units TCIT TxCLK In Transition Time (Figure 4) 1.0 2.0 3.0 ns TCIP High TxCLK In Period, PLLSEL = High Gear (Figure 5) 8.928 T 26.3 ns TCIP Low TxCLK In Period, PLLSEL = Low Gear (Figure 5) 25 T 30.3 ns TCIH TxCLK In High Time (Figure 5) 0.35T 0.5T 0.65T ns TCIL TxCLK In Low Time (Figure 5) 0.35T 0.5T 0.65T ns TXIT TxIN Transition Time 6.0 ns 1.5 Transmitter Switching Characteristics Over recommended operating supply and temperature ranges unless otherwise specified. Symbol LLHT LHLT Typ Max Units LVDS Low-to-High Transition Time, (Figure 2), PRE = 0.75V (disabled) Parameter Min 0.14 0.7 ns LVDS Low-to-High Transition Time, (Figure 2), PRE = Vcc (max) 0.11 0.6 ns LVDS High-to-Low Transition Time, (Figure 2), PRE = 0.75V (disabled) 0.16 0.8 ns LVDS High-to-Low Transition Time, (Figure 2), PRE = Vcc (max) 0.11 0.7 ns TBIT Transmitter Bit Width TPPOS Transmitter Pulse Positions Normalized TJCC Transmitter Jitter - Cycle-to-Cycle (1) TCCS TxOUT Channel to Channel Skew 40 TSTC TxIN Setup to TxCLK IN, (Figure 5) 2.5 THTC TxIN Hold to TxCLK IN, (Figure 5) 0 TPDL Transmitter Propagation Delay - Latency, (Figure 7) TPLLS TPDD (1) 1/7 TCIP f = 33 to 70 MHz −250 f = 70 to 112 MHz −200 1.5(TCIP)+3.72 ns 0 +250 ps 0 +200 ps 50 100 ps ps ns ns 1.5(TCIP)+4.4 1.5(TCIP)+6.24 ns Transmitter Phase Lock Loop Set, (Figure 9) 10 ms Transmitter Powerdown Delay, (Figure 11) 100 ns TJCC is a function of input clock quality and also PLLVCC noise. At 112MHz operation, with a +/−300ps input impulse at a 2us rate, TJCC has been measured to be in the 70-80ps range (B DS90CR483AVJDX/NOPB ACTIVE TQFP NEZ 100 1000 RoHS & Green NIPDAU Level-3-260C-168 HR -10 to 70 DS90CR483AVJD >B DS90CR484AVJD/NOPB ACTIVE TQFP NEZ 100 90 RoHS & Green NIPDAU Level-3-260C-168 HR -10 to 70 DS90CR484AVJD >B DS90CR484AVJDX/NOPB ACTIVE TQFP NEZ 100 1000 RoHS & Green NIPDAU Level-3-260C-168 HR -10 to 70 DS90CR484AVJD >B (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of