DS10CP152Q Automotive 1.5 Gbps 2X2 LVDS Crosspoint Switch General Description Features The DS10CP152Q is a 1.5 Gbps 2x2 LVDS crosspoint switch optimized for high-speed signal routing and switching over lossy FR-4 printed circuit board backplanes and balanced cables. Fully differential signal paths ensure exceptional signal integrity and noise immunity. The non-blocking architecture allows connections of any input to any output or outputs. Wide input common mode range allows the switch to accept signals with LVDS, CML and LVPECL levels; the output levels are LVDS. A very small package footprint requires a minimal space on the board while the flow-through pinout allows easy board layout. Each differential input and output is internally terminated with a 100Ω resistor to lower device return losses, reduce component count and further minimize board space. ■ AECQ-100 Grade 3 ■ DC - 1.5 Gbps low jitter, low skew, low power operation ■ Pin configurable, fully differential, non-blocking architecture ■ Wide Input Common Mode Voltage Range allows DCcoupled interface to LVDS, CML and LVPECL drivers ■ On-chip 100Ω input and output termination minimizes insertion and return losses, reduces component count and minimizes board space ■ 8 kV ESD on LVDS I/O pins protects adjoining components ■ Small SOIC-16 space saving package Applications ■ Automotive display applications ■ Clock and data buffering and muxing ■ SD/HD SDI Routers Typical Application 30063770 © 2009 National Semiconductor Corporation 300637 www.national.com DS10CP152Q Automotive 1.5 Gbps 2X2 LVDS Crosspoint Switch March 5, 2009 DS10CP152Q Ordering Code NSID Function DS10CP152QMA 2x2 Crosspoint Switch Block Diagram 30063701 Connection Diagram 30063752 DS10CP152Q Pin Diagram Pin Descriptions Pin Name Pin Number I/O, Type Pin Description IN0+, IN0- , IN1+, IN1- 3, 4, 6, 7 I, LVDS Inverting and non-inverting high speed LVDS input pins. OUT0+, OUT0-, OUT1+, OUT1- 14, 13, 11, 10 O, LVDS Inverting and non-inverting high speed LVDS output pins. SEL1, SEL0 1, 2 I, LVCMOS Switch configuration pins. EN0, EN1 16, 15 I, LVCMOS Output enable pins. NC 8, 9 NC "NO CONNECT" pins. VDD 5 Power Power supply pin. GND 12 Power Ground pin. www.national.com 2 Package Thermal Resistance If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage −0.3V to +4V LVCMOS Input Voltage −0.3V to (VCC + 0.3V) LVDS Input Voltage −0.3V to +4V LVDS Differential Input Voltage 0V to 1V LVDS Output Voltage −0.3V to (VCC + 0.3V) LVDS Differential Output Voltage 0V to 1V LVDS Output Short Circuit Current 5 ms Duration Junction Temperature +105°C Storage Temperature Range −65°C to +150°C Lead Temperature Range Soldering (4 sec.) +260°C Maximum Package Power Dissipation at 25°C M16A Package 1.10W Derate M16A Package 13.75 mW/°C above +25°C θJA +72.7°C/W θJC ESD Susceptibility HBM (Note 1) +41.2°C/W ≥8 kV ≥250V ≥1250V MM (Note 2) CDM (Note 3) Note 1: Human Body Model, applicable std. JESD22-A114C Note 2: Machine Model, applicable std. JESD22-A115-A Note 3: Field Induced Charge Device Model, applicable std. JESD22-C101-C Recommended Operating Conditions Supply Voltage (VCC) Receiver Differential Input Voltage (VID) Operating Free Air Temperature (TA) Min 3.0 0 Typ 3.3 Max 3.6 1 Units V V −40 +25 +85 °C DC Electrical Characteristics Over recommended operating supply and temperature ranges unless otherwise specified. (Notes 5, 6, 7) Symbol Parameter Conditions Min Typ Max Units LVCMOS DC SPECIFICATIONS VIH High Level Input Voltage 2.0 VDD V VIL Low Level Input Voltage GND 0.8 V IIH High Level Input Current VIN = 3.6V VCC = 3.6V 175 250 μA IIL Low Level Input Current VIN = GND VCC = 3.6V ±1 ±10 μA VCL Input Clamp Voltage ICL = −18 mA, VCC = 0V −0.9 −1.5 V 1 V +100 mV 40 LVDS INPUT DC SPECIFICATIONS VID Input Differential Voltage 0 VTH Differential Input High Threshold VTL Differential Input Low Threshold VCMR Common Mode Voltage Range VID = 100 mV IIN Input Current VIN = 3.6V or 0V VCC = 3.6V or 0V CIN Input Capacitance Any LVDS Input Pin to GND 1.7 pF RIN Input Termination Resistor Between IN+ and IN- 100 Ω VCM = +0.05V or VCC-0.05V 0 −100 3 0 0.05 ±1 mV VCC 0.05 V ±10 μA www.national.com DS10CP152Q Absolute Maximum Ratings (Note 4) DS10CP152Q Symbol Parameter Conditions Min Typ Max Units 250 350 450 mV 35 mV 1.375 V 35 mV LVDS OUTPUT DC SPECIFICATIONS VOD Differential Output Voltage ΔVOD Change in Magnitude of VOD for Complimentary Output States VOS Offset Voltage ΔVOS Change in Magnitude of VOS for Complimentary Output States RL = 100Ω IOS Output Short Circuit Current (Note 8) OUT to GND -23 -55 mA OUT to VCC 8 55 mA RL = 100Ω -35 1.05 1.2 -35 COUT Output Capacitance Any LVDS Output Pin to GND 1.2 pF ROUT Output Termination Resistor Between OUT+ and OUT- 100 Ω SUPPLY CURRENT ICC Supply Current EN0 = EN1 = H 58 70 mA ICCZ Outputs Powered Down Supply Current EN0 = EN1 = L 25 30 mA Note 4: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating Conditions indicate conditions at which the device is functional and the device should not be operated beyond such conditions. Note 5: The Electrical Characteristics tables list guaranteed specifications under the listed Recommended Operating Conditions except as otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not guaranteed. Note 6: Current into device pins is defined as positive. Current out of device pins is defined as negative. All voltages are referenced to ground except VOD and ΔVOD. Note 7: Typical values represent most likely parametric norms for VCC = +3.3V and TA = +25°C, and at the Recommended Operation Conditions at the time of product characterization and are not guaranteed. Note 8: Output short circuit current (IOS) is specified as magnitude only, minus sign indicates direction only. www.national.com 4 Over recommended operating supply and temperature ranges unless otherwise specified. (Notes 9, 10, 11) Symbol Parameter Conditions Min Typ Max Units 440 650 ps 400 650 ps LVDS OUTPUT AC SPECIFICATIONS tPLHD Differential Propagation Delay Low to High tPHLD Differential Propagation Delay High to Low tSKD1 Pulse Skew |tPLHD − tPHLD| (Note 12) 40 120 ps tSKD2 Channel to Channel Skew (Note 13) 25 60 ps tSKD3 Part to Part Skew (Note 14) 45 190 ps tLHT Rise Time 170 350 ps tHLT Fall Time 170 350 ps tON Output Enable Time 5 20 μs tOFF Output Disable Time 3 12 ns tSEL Select Time 3 12 ns 135 MHz 0.5 1.2 ps 311 MHz 0.5 1.2 ps 503 MHz 0.5 1.2 ps 750 MHz 0.5 1.2 ps 270 Mbps 9 38 ps 622 Mbps 7 36 ps 1.06 Gbps 7 34 ps 1.5 Gbps 9 35 ps 270 Mbps 0.01 0.03 UIP-P 622 Mbps 0.01 0.04 UIP-P 1.06 Gbps 0.01 0.05 UIP-P 1.5 Gbps 0.01 0.07 UIP-P RL = 100Ω RL = 100Ω JITTER PERFORMANCE (Note 11) tRJ1 tRJ2 tRJ3 Random Jitter (RMS Value) VID = 350 mV VCM = 1.2V Clock (RZ) tRJ4 tDJ1 tDJ2 tDJ3 Deterministic Jitter (Peak-to-Peak Value ) VID = 350 mV VCM = 1.2V Clock (RZ) tDJ4 tTJ1 tTJ2 tTJ3 Total Jitter (Peak to Peak Value) VID = 350 mV VCM = 1.2V PRBS-23 (NRZ) tTJ4 Note 9: The Electrical Characteristics tables list guaranteed specifications under the listed Recommended Operating Conditions except as otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not guaranteed. Note 10: Typical values represent most likely parametric norms for VCC = +3.3V and TA = +25°C, and at the Recommended Operation Conditions at the time of product characterization and are not guaranteed. Note 11: Specification is guaranteed by characterization and is not tested in production. Note 12: tSKD1, |tPLHD − tPHLD|, Pulse Skew, is the magnitude difference in differential propagation delay time between the positive going edge and the negative going edge of the same channel. Note 13: tSKD2, Channel to Channel Skew, is the difference in propagation delay (tPLHD or tPHLD) among all output channels in Broadcast mode (any one input to all outputs). Note 14: tSKD3, Part to Part Skew, is defined as the difference between the minimum and maximum differential propagation delays. This specification applies to devices at the same VCC and within 5°C of each other within the operating temperature range. Note 15: Measured on a clock edge with a histogram and an acummulation of 1500 histogram hits. Input stimulus jitter is subtracted geometrically. Note 16: Tested with a combination of the 1100000101 (K28.5+ character) and 0011111010 (K28.5- character) patterns. Input stimulus jitter is subtracted algebraically. Note 17: Measured on an eye diagram with a histogram and an acummulation of 3500 histogram hits. Input stimulus jitter is subtracted. 5 www.national.com DS10CP152Q AC Electrical Characteristics DS10CP152Q DC Test Circuits 30063720 FIGURE 1. Differential Driver DC Test Circuit AC Test Circuits and Timing Diagrams 30063721 FIGURE 2. Differential Driver AC Test Circuit 30063722 FIGURE 3. Propagation Delay Timing Diagram 30063723 FIGURE 4. LVDS Output Transition Times www.national.com 6 The DS10CP152Q is a 1.5 Gbps 2x2 LVDS digital crosspoint switch optimized for high-speed signal routing and switching over lossy FR-4 printed circuit board backplanes and balanced cables. TABLE 1. Switch Configuration Truth Table SEL1 SEL0 OUT1 OUT0 0 0 IN0 IN0 0 1 IN0 IN1 1 0 IN1 IN0 1 1 IN1 IN1 TABLE 2. Output Enable Truth Table EN1 EN0 OUT1 OUT0 0 0 Disabled Disabled 0 1 Disabled Enabled 1 0 Enabled Disabled 1 1 Enabled Enabled 7 www.national.com DS10CP152Q Functional Description DS10CP152Q ferential drivers (i.e. LVPECL, LVDS, CML). The following three figures illustrate typical DC-coupled interface to common differential drivers. Note that the DS10CP152Q inputs are internally terminated with a 100Ω resistor. INPUT INTERFACING The DS10CP152Q accepts differential signals and allows simple AC or DC coupling. With a wide common mode range, the DS10CP152Q can be DC-coupled with all common dif- 30063731 Typical LVDS Driver DC-Coupled Interface to an DS10CP152Q Input 30063732 Typical CML Driver DC-Coupled Interface to an DS10CP152Q Input 30063733 Typical LVPECL Driver DC-Coupled Interface to an DS10CP152Q Input www.national.com 8 30063734 Typical DS10CP152Q Output DC-Coupled Interface to an LVDS, CML or LVPECL Receiver 9 www.national.com DS10CP152Q assumes that the receivers have high impedance inputs. While most differential receivers have a common mode input range that can accomodate LVDS compliant signals, it is recommended to check respective receiver's data sheet prior to implementing the suggested interface implementation. OUTPUT INTERFACING The DS10CP152Q outputs signals compliant to the LVDS standard. Its outputs can be DC-coupled to most common differential receivers. The following figure illustrates typical DC-coupled interface to common differential receivers and DS10CP152Q Typical Performance Characteristics 30063760 30063761 A 270 Mbps NRZ PRBS-7 After 2" Differential FR-4 Stripline V:100 mV / DIV, H:500 ps / DIV A 622 Mbps NRZ PRBS-7 After 2" Differential FR-4 Stripline V:100 mV / DIV, H:200 ps / DIV 30063763 30063762 A 1.5 Gbps NRZ PRBS-7 After 2" Differential FR-4 Stripline V:100 mV / DIV, H:100 ps / DIV A 1.06 Gbps NRZ PRBS-7 After 2" Differential FR-4 Stripline V:100 mV / DIV, H:200 ps / DIV www.national.com 10 DS10CP152Q Physical Dimensions inches (millimeters) unless otherwise noted Order Number DS10CP152QMA NS Package Number M16A 11 www.national.com DS10CP152Q Automotive 1.5 Gbps 2X2 LVDS Crosspoint Switch Notes For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Design Support Amplifiers www.national.com/amplifiers WEBENCH® Tools www.national.com/webench Audio www.national.com/audio App Notes www.national.com/appnotes Clock and Timing www.national.com/timing Reference Designs www.national.com/refdesigns Data Converters www.national.com/adc Samples www.national.com/samples Interface www.national.com/interface Eval Boards www.national.com/evalboards LVDS www.national.com/lvds Packaging www.national.com/packaging Power Management www.national.com/power Green Compliance www.national.com/quality/green Switching Regulators www.national.com/switchers Distributors www.national.com/contacts LDOs www.national.com/ldo Quality and Reliability www.national.com/quality LED Lighting www.national.com/led Feedback/Support www.national.com/feedback Voltage Reference www.national.com/vref Design Made Easy www.national.com/easy PowerWise® Solutions www.national.com/powerwise Solutions www.national.com/solutions Serial Digital Interface (SDI) www.national.com/sdi Mil/Aero www.national.com/milaero Temperature Sensors www.national.com/tempsensors SolarMagic™ www.national.com/solarmagic Wireless (PLL/VCO) www.national.com/wireless Analog University® www.national.com/AU THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION (“NATIONAL”) PRODUCTS. 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