DS90LV110AT www.ti.com SNOSAC2J – AUGUST 2004 – REVISED APRIL 2013 DS90LV110AT 1 to 10 LVDS Data/Clock Distributor with Failsafe Check for Samples: DS90LV110AT FEATURES DESCRIPTION • • DS90LV110A is a 1 to 10 data/clock distributor utilizing LVDS (Low Voltage Differential Signaling) technology for low power, high speed operation. Data paths are fully differential from input to output for low noise generation and low pulse width distortion. The design allows connection of 1 input to all 10 outputs. LVDS I/O enable high speed data transmission for point-to-point interconnects. This device can be used as a high speed differential 1 to 10 signal distribution / fanout replacing multi-drop bus applications for higher speed links with improved signal quality. It can also be used for clock distribution up to 200MHz. 1 2 • • • • • • • • • • Low jitter 400 Mbps fully differential data path 145 ps (typ) of pk-pk jitter with PRBS = 223−1 data pattern at 400 Mbps Single +3.3 V Supply Balanced output impedance Output channel-to-channel skew is 35ps (typ) Differential output voltage (VOD) is 320mV (typ) with 100Ω termination load. LVDS receiver inputs accept LVPECL signals LVDS input failsafe Fast propagation delay of 2.8 ns (typ) Receiver open, shorted, and terminated input failsafe 28 lead TSSOP package Conforms to ANSI/TIA/EIA-644 LVDS standard The DS90LV110A accepts LVDS signal levels, LVPECL levels directly or PECL with attenuation networks. The LVDS outputs can be put into TRI-STATE by use of the enable pin. For more details, please refer to the APPLICATION INFORMATION section of this datasheet. Connection Diagram Order Number DS90LV110ATMT PW0028A Package 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 © 2004–2013, Texas Instruments Incorporated DS90LV110AT SNOSAC2J – AUGUST 2004 – REVISED APRIL 2013 www.ti.com Block Diagram 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) −0.3V to +4V Supply Voltage (VDD-VSS) −0.3V to (VCC + 0.3V) LVCMOS/LVTTL Input Voltage (EN) LVDS Receiver Input Voltage (IN+, IN−) −0.3V to +4V LVDS Driver Output Voltage (OUT+, OUT−) −0.3V to +4V Junction Temperature +150°C −65°C to +150°C Storage Temperature Range Lead Temperature (Soldering, 4 sec.) +260°C Maximum Package Power Dissipation at 25°C 28 Lead TSSOP 2.115 W Package Derating 28 Lead TSSOP 16.9 mW/°C above +25°C θJA (4-Layer, 2 oz. Cu, JEDEC) 28 Lead TSSOP 59.1 °C/W ESD Rating: (1) (HBM, 1.5kΩ, 100pF) > 8 kV (EIAJ, 0Ω, 200pF) > 250 V “Absolute Maximum Ratings” are these beyond which the safety of the device cannot be verified. They are not meant to imply that the device should be operated at these limits. The table of “Electrical Characteristics” provides conditions for actual device operation. Recommended Operating Conditions Min Typ Max Units 3.0 3.3 3.6 V Supply Voltage (VDD - VSS) Receiver Input Voltage 0 Operating Free Air Temperature 2 -40 Submit Documentation Feedback +25 VDD V +85 °C Copyright © 2004–2013, Texas Instruments Incorporated Product Folder Links: DS90LV110AT DS90LV110AT www.ti.com SNOSAC2J – AUGUST 2004 – REVISED APRIL 2013 Electrical Characteristics Over recommended operating supply and temperature ranges unless otherwise specified Symbol Parameter Conditions Min Typ (1) Max Units V LVCMOS/LVTTL DC SPECIFICATIONS (EN) VIH High Level Input Voltage 2.0 VDD VIL Low Level Input Voltage VSS 0.8 V IIH High Level Input Current VIN = 3.6V or 2.0V; VDD = 3.6V ±20 μA IIL Low Level Input Current VIN = 0V or 0.8V; VDD = 3.6V ±7 ±20 μA VCL Input Clamp Voltage ICL = −18 mA −0.8 −1.5 V mV ±7 LVDS OUTPUT DC SPECIFICATIONS (OUT1, OUT2, OUT3, OUT4, OUT5, OUT6, OUT7, OUT8, OUT9, OUT10) VOD Differential Output Voltage RL = 100Ω 250 320 450 RL = 100Ω, VDD = 3.3V, TA = 25°C 260 320 425 mV 35 |mV| ΔVOD Change in VOD between Complimentary Output States VOS Offset Voltage ΔVOS Change in VOS between Complimentary Output States IOZ Output TRI-STATE Current EN = 0V, VOUT = VDD or GND IOFF Power-Off Leakage Current ISA,ISB Output Short Circuit Current ISAB Both Outputs Shorted (2) 1.125 (3) 1.25 1.375 V 35 |mV| ±1 ±10 μA VDD = 0V; VOUT = 3.6V or GND ±1 ±10 μA VOUT+ OR VOUT− = 0V or VDD 12 24 |mA| VOUT+ = VOUT− 6 12 |mA| 0 +100 mV LVDS RECEIVER DC SPECIFICATIONS (IN) VTH Differential Input High Threshold VTL Differential Input Low Threshold VCM = +0.05V or +1.2V or +3.25V, VDD = 3.3V −100 VCMR Common Mode Voltage Range VID = 100mV, VDD = 3.3V 0.05 3.25 V IIN Input Current VIN = +3.0V, VDD = 3.6V or 0V ±1 ±10 μA VIN = 0V, VDD = 3.6V or 0V ±1 ±10 μA RL = 100Ω, CL = 5 pF, 200 MHz, EN = High 125 160 mA No Load, 200 MHz, EN = High 80 125 mA EN = Low 15 29 mA 0 mV SUPPLY CURRENT ICCD Total Supply Current ICCZ TRI-STATE Supply Current (1) (2) (3) All typical are given for VCC = +3.3V and TA = +25°C, unless otherwise stated. VOS is defined as (VOH + VOL) / 2. Only one output can be shorted at a time. Don't exceed the package absolute maximum rating. Submit Documentation Feedback Copyright © 2004–2013, Texas Instruments Incorporated Product Folder Links: DS90LV110AT 3 DS90LV110AT SNOSAC2J – AUGUST 2004 – REVISED APRIL 2013 www.ti.com AC Electrical Characteristics Over recommended operating supply and temperature ranges unless otherwise specified. Symbol Parameter Conditions Min Typ Max Units 390 550 ps 390 550 ps TLHT Output Low-to-High Transition Time, 20% to 80%, Figure 4 (1) THLT Output High-to-Low Transition Time, 80% to 20%, Figure 4 (1) TDJ LVDS Data Jitter, Deterministic (Peak-toPeak) (2) TRJ LVDS Clock Jitter, Random TPLHD Propagation Low to High Delay, Figure 5 2.2 2.8 3.6 ns TPHLD Propagation High to Low Delay, Figure 5 2.2 2.8 3.9 ns TSKEW Pulse Skew |TPLHD - TPHLD| 20 340 ps (2) VID = 300mV; PRBS=223-1 data; VCM = 1.2V at 400 Mbps (NRZ) 145 ps VID = 300mV; VCM = 1.2V at 200 MHz clock 2.8 ps (1) (1) TCCS Output Channel-to-Channel Skew, Figure 6 35 91 ps TPHZ Disable Time (Active to TRI-STATE) High to Z, Figure 1 3.0 6.0 ns TPLZ Disable Time (Active to TRI-STATE) Low to Z, Figure 1 1.8 6.0 ns TPZH Enable Time (TRI-STATE to Active) Z to High, Figure 1 10.0 23.0 ns TPZL Enable Time (TRI-STATE to Active) Z to Low, Figure 1 7.0 23.0 ns (1) (2) The parameters are specified by design. The limits are based on statistical analysis of the device performance over PVT (process, voltage and temperature) range. The measurement used the following equipment and test setup: HP8133A pattern/pulse generator), 5 feet of RG-142 cable with DUT test board and HP83480A (digital scope mainframe) with HP83484A (50GHz scope module). The HP8133A with the RG-142 cable exhibit a TDJ = 26ps and TRJ = 1.3 ps AC TIMING DIAGRAMS Figure 1. Output active to TRI-STATE and TRI-STATE to active output time 4 Submit Documentation Feedback Copyright © 2004–2013, Texas Instruments Incorporated Product Folder Links: DS90LV110AT DS90LV110AT www.ti.com SNOSAC2J – AUGUST 2004 – REVISED APRIL 2013 Figure 2. LVDS Driver TRI-STATE Circuit Figure 3. LVDS Output Load Figure 4. LVDS Output Transition Time Figure 5. Propagation Delay Low-to-High and High-to-Low Submit Documentation Feedback Copyright © 2004–2013, Texas Instruments Incorporated Product Folder Links: DS90LV110AT 5 DS90LV110AT SNOSAC2J – AUGUST 2004 – REVISED APRIL 2013 www.ti.com Figure 6. Output 1 to 10 Channel-to-Channel Skew APPLICATION INFORMATION INPUT FAIL-SAFE The receiver inputs of the DS90LV110A have internal fail-safe biasing for short, open, and teminated input conditions. LVDS INPUTS TERMINATION The LVDS Receiver input must have a 100Ω termination resistor placed as close as possible across the input pins. UNUSED CONTROL INPUTS The EN control input pin has internal pull down device. If left open, the 10 outputs will default to TRI-STATE. EXPANDING THE NUMBER OF OUTPUT PORTS To expand the number of output ports, more than one DS90LV110A can be used. Total propagation delay through the devices should be considered to determine the maximum expansion. Adding more devices will increase the output jitter due to each pass. PCB LAYOUT AND POWER SYSTEM BYPASS Circuit board layout and stack-up for the DS90LV110A should be designed to provide noise-free power to the device. Good layout practice also will separate high frequency or high level inputs and outputs to minimize unwanted stray noise pickup, feedback and interference. Power system performance may be greatly improved by using thin dielectrics (4 to 10 mils) for power/ground sandwiches. This increases the intrinsic capacitance of the PCB power system which improves power supply filtering, especially at high frequencies, and makes the value and placement of external bypass capacitors less critical. External bypass capacitors should include both RF ceramic and tantalum electrolytic types. RF capacitors may use values in the range 0.01 µF to 0.1 µF. Tantalum capacitors may be in the range 2.2 µF to 10 µF. Voltage rating for tantalum capacitors should be at least 5X the power supply voltage being used. It is recommended practice to use two vias at each power pin of the DS90LV110A as well as all RF bypass capacitor terminals. Dual vias reduce the interconnect inductance by up to half, thereby reducing interconnect inductance and extending the effective frequency range of the bypass components. The outer layers of the PCB may be flooded with additional ground plane. These planes will improve shielding and isolation as well as increase the intrinsic capacitance of the power supply plane system. Naturally, to be effective, these planes must be tied to the ground supply plane at frequent intervals with vias. Frequent via placement also improves signal integrity on signal transmission lines by providing short paths for image currents which reduces signal distortion. The planes should be pulled back from all transmission lines and component mounting pads a distance equal to the width of the widest transmission line or the thickness of the dielectric separating the transmission line from the internal power or ground plane(s) whichever is greater. Doing so minimizes effects on transmission line impedances and reduces unwanted parasitic capacitances at component mounting pads. 6 Submit Documentation Feedback Copyright © 2004–2013, Texas Instruments Incorporated Product Folder Links: DS90LV110AT DS90LV110AT www.ti.com SNOSAC2J – AUGUST 2004 – REVISED APRIL 2013 There are more common practices which should be followed when designing PCBs for LVDS signaling. Please see Application Note: AN-1108(SNLA008) for additional information. INPUT INTERFACING The DS90LV110A accepts differential signals and allow simple AC or DC coupling. With a wide common mode range, the DS90LV110A can be DC-coupled with all common differential drivers (that is, LVPECL, LVDS, CML). Figure 7, Figure 8, and Figure 9 illustrate typical DC-coupled interface to common differential drivers. LVDS Driver DS90LV110A Receiver 100: Differential T-Line OUT+ IN+ 100: IN- OUT- Figure 7. Typical LVDS Driver DC-Coupled Interface to DS90LV110A Input CML3.3V or CML2.5V Driver VCC 50: DS90LV110A Receiver 50: 100: Differential T-Line OUT+ IN+ 100: IN- OUT- Figure 8. Typical CML Driver DC-Coupled Interface to DS90LV110A Input LVPECL Driver DS90LV110A Receiver 100: Differential T-Line OUT+ IN+ 100: IN- OUT50: 50: Figure 9. Typical LVPECL Driver DC-Coupled Interface to DS90LV110A Input Submit Documentation Feedback Copyright © 2004–2013, Texas Instruments Incorporated Product Folder Links: DS90LV110AT 7 DS90LV110AT SNOSAC2J – AUGUST 2004 – REVISED APRIL 2013 www.ti.com OUTPUT INTERFACING The DS90LV110A outputs signals that are compliant to the LVDS standard. Their outputs can be DC-coupled to most common differential receivers. Figure 10 illustrates typical DC-coupled interface to common differential receivers and assumes that the receivers have high impedance inputs. While most differential receivers have a common mode input range that can accommodate LVDS compliant signals, it is recommended to check respective receiver's data sheet prior to implementing the suggested interface implementation. DS90LV110A Driver OUT+ Differential Receiver 100: Differential T-Line IN+ CML or LVPECL or LVDS 100: IN- OUT- Figure 10. Typical DS90LV110A Output DC-Coupled Interface to an LVDS, CML or LVPECL Receiver DS90LV110A PIN DESCRIPTIONS 8 Pin Name # of Pin Input/Output IN+ 1 I Non-inverting LVDS input Description IN - 1 I Inverting LVDS input OUT+ 10 O Non-inverting LVDS Output OUT - 10 O Inverting LVDS Output EN 1 I This pin has an internal pull-down when left open. A logic low on the Enable puts all the LVDS outputs into TRI-STATE and reduces the supply current. VSS 3 P Ground (all ground pins must be tied to the same supply) VDD 2 P Power Supply (all power pins must be tied to the same supply) Submit Documentation Feedback Copyright © 2004–2013, Texas Instruments Incorporated Product Folder Links: DS90LV110AT DS90LV110AT www.ti.com SNOSAC2J – AUGUST 2004 – REVISED APRIL 2013 MULTI-DROP APPLICATIONS POINT-TO-POINT DISTRIBUTION APPLICATIONS For applications operating at data rate greater than 400Mbps, a point-to-point distribution application should be used. This improves signal quality compared to multi-drop applications due to no stub PCB trace loading. The only load is a receiver at the far end of the transmission line. Point-to-point distribution applications will have a wider LVDS bus lines, but data rate can increase well above 400Mbps due to the improved signal quality. Submit Documentation Feedback Copyright © 2004–2013, Texas Instruments Incorporated Product Folder Links: DS90LV110AT 9 DS90LV110AT SNOSAC2J – AUGUST 2004 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics 10 Output Voltage (VOD) vs. Resistive Load (RL) Peak-to-Peak Output Jitter at VCM = +0.4V vs. VID Peak-to-Peak Output Jitter at VCM = +1.2V vs. VID Peak-to-Peak Output Jitter at VCM = +2.9V vs. VID Submit Documentation Feedback Copyright © 2004–2013, Texas Instruments Incorporated Product Folder Links: DS90LV110AT DS90LV110AT www.ti.com SNOSAC2J – AUGUST 2004 – REVISED APRIL 2013 REVISION HISTORY Changes from Revision I (April 2013) to Revision J • Page Changed layout of National Data Sheet to TI format ............................................................................................................ 1 Submit Documentation Feedback Copyright © 2004–2013, Texas Instruments Incorporated Product Folder Links: DS90LV110AT 11 PACKAGE OPTION ADDENDUM www.ti.com 13-Sep-2014 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (°C) Device Marking (4/5) DS90LV110ATMT NRND TSSOP PW 28 48 TBD Call TI Call TI -40 to 85 DS90LV 110ATMT DS90LV110ATMT/NOPB ACTIVE TSSOP PW 28 48 Green (RoHS & no Sb/Br) CU SN Level-3-260C-168 HR -40 to 85 DS90LV 110ATMT DS90LV110ATMTX/NOPB ACTIVE TSSOP PW 28 2500 Green (RoHS & no Sb/Br) CU SN Level-3-260C-168 HR -40 to 85 DS90LV 110ATMT (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) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. 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Addendum-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing DS90LV110ATMTX/NOPB TSSOP PW 28 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2500 330.0 16.4 Pack Materials-Page 1 6.8 B0 (mm) K0 (mm) P1 (mm) 10.2 1.6 8.0 W Pin1 (mm) Quadrant 16.0 Q1 PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) DS90LV110ATMTX/NOPB TSSOP PW 28 2500 367.0 367.0 38.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. 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