19-0807; Rev 0; 4/07 Quad, High-Speed HDMI/DVI 2:1 Digital Video Switch The MAX4886 high-speed analog switch is ideal for HDMI/DVI switching applications, permitting 2:1 or 1:2 switching. The MAX4886 contains four differential pairs of 1:2 or 2:1 switches for RGB and clocking signals. The MAX4886 connects either one monitor to one of two digital video signals, or one HDMI/DVI source to one of two loads (sink). The MAX4886 set of differential switches is based on an nFET architecture with internal charge pump for gate overdrive. This advanced architecture results in an extremely low capacitance and on-resistance needed for the excellent return loss requirements for digital switching. An efficient internal charge-pump design offers very low quiescent current for power-sensitive notebook designs. The MAX4886 features 8Ω (typ) on-resistance and 2.5pF on-capacitance switches for routing RGB and CLK video signals. The MAX4886 is a high-frequency companion device to the MAX4929. These two devices combined perform the full 2:1 HDMI/DVI switching function. The MAX4886 is available in a space-saving, 42-pin, 3.5mm x 9.0mm TQFN package and operates over the extended -40°C to +85°C temperature range. Applications Features ♦ Single +3.0V to +3.6V Power Supply ♦ Low On-Resistance (RON): 8Ω (typ) ♦ Low On-Capacitance (CON): 2.5pF (typ) ♦ Low Skew: 20ps (typ) ♦ 700µA Low Supply Current ♦ 2.6GHz (typ) Ultra-High Bandwidth ♦ 0.6dB (typ) Ultra-Low Insertion Loss ♦ High-Frequency Companion Device to MAX4929 ♦ Use MAX4886 and MAX4929 to Form a Complete HDMI/DVI 2:1 Switch ♦ 42-Pin, 3.5mm x 9.0mm, Space-Saving TQFN Ordering Information PART TEMP RANGE PINPACKAGE PKG CODE MAX4886ETO+ -40°C to +85°C 42 TQFN-EP* T42359OM-1 +Denotes a lead-free package. *EP = Exposed paddle. HDTV Monitors/Receivers Video Projectors Notebook Computers Digital HDTV Switch Boxes/Tuners Multimedia Audio/Video Switchers Servers/Routers with DVI Interfaces Eye Diagram EYE DIAGRAM (VDD = 3.3V, f = 2.6GHz 600mVP-P PRBS SIGNAL+) Digital Video Recorders LVDS Switching 1000 Base-BX, Switching * PRBS = PSUEDORANDOM BIT SEQUENCE UI = 606ps Pin Configuration appears at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX4886 General Description MAX4886 Quad, High-Speed HDMI/DVI 2:1 Digital Video Switch ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) VDD ...........................................................................-0.3V to +4V SEL (Note 1) ...............................................-0.3V to (VDD + 0.3V) COM_, NC_, NO_ .......................................-0.3V to (VDD + 0.3V) Continuous Current Through Any Switch .......................±120mA Peak Current Through Any Switches (Pulsed at 1ms, 10% duty cycle).................................±240mA Continuous Power Dissipation (TA = +70°C) 42-Pin Thin QFN-EP (derate 35.7mW/°C above +70°C).....................................................................2857.1mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Junction Temperature .................................................... +150°C Lead Temperature (soldering, 10s) .................................+300°C Note 1: Signal exceeding VDD or GND are clamped by internal diodes. Limit forward-diode current to maximum current rating. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VDD = +3.0V to +3.6V, TA = TMIN to TMAX. Typical values are at VDD = +3.3V, TA = +25°C, unless otherwise noted.) (Note 2) PARAMETER SYMBOL Supply Voltage Range VDD Quiescent Supply Current IDD CONDITIONS MIN TYP MAX 3.6 V 600 1100 µA 8 11 3.0 +3V ≤ VDD ≤ +3.6V; SEL = 0V or VDD UNITS ANALOG SWITCH VDD = +3V, 0V ≤ VCOM_ ≤ VDD, ICOM_ = -40mA On-Resistance (Note 3) RON VDD = +3V, ICOM_ = -40mA, 0 ≤ VCOM_ ≤ 1.5V On-Resistance Matching (Notes 3, 4) On-Resistance Flatness (Note 3) Leakage Current ΔRON VDD = +3V, 1.5V ≤ VCOM_ ≤ VDD, ICOM_ = -40mA VDD = +3V, 0 ≤ VCOM_ ≤ 1.5V, ICOM_= -40mA VDD = +3V, ICOM_ = -40mA, 1.5V < VCOM_ < VDD RFLAT(ON) VDD = +3V, ICOM_ = -40mA, 0 ≤ VCOM_ ≤ 1.5V IL TA = +25°C TA = TMIN to TMAX 15 TA = +25°C 8 TA = TMIN to TMAX Ω 15 TA = +25°C 0.28 TA = TMIN to TMAX 0.40 0.8 TA = +25°C 0.28 TA = TMIN to TMAX 0.40 Ω 0.8 TA = +25°C 0.02 TA = TMIN to TMAX 0.60 1 TA = +25°C 0.02 TA = TMIN to TMAX VDD = +3.6V, VCOM_ = +0.3V, +3.3V, VNC_ or VNO_ = +3.3V, 0.3V 11 0.60 Ω 1 -1 +1 µA SWITCH DYNAMIC Off-Capacitance 2 COFF f = 1MHz, VCOM_ = VNC_ or VNO_ 1.5 _______________________________________________________________________________________ pF Quad, High-Speed HDMI/DVI 2:1 Digital Video Switch (VDD = +3.0V to +3.6V, TA = TMIN to TMAX. Typical values are at VDD = +3.3V, TA = +25°C, unless otherwise noted.) (Note 2) PARAMETER On-Capacitance SYMBOL CON Propagation Delay tPD1, tPD2 CONDITIONS MIN TYP MAX UNITS f = 1MHz, VCOM_ = VNC_ or VNO_ 2.5 pF RS = RL = 50Ω (Figure 2) 100 ps Output Skew Between Ports tSKEW1 Skew between any two ports, RS = RL = 50Ω (Figure 3) 20 ps Skew Between Same Ports tSKEW2 RS = RL = 50Ω, skew between any two ports (Figure 3) 20 ps SWITCH AC PERFORMANCE On-Channel -3dB Bandwidth BW RS = RL = 50Ω (Figure 4) 2.6 GHz Insertion Loss ILOS RS = RL = 50Ω, f = 50MHz (Figure 4) 0.6 dB Off-Isolation VISO RS = RL = 50Ω, single-ended, f = 50MHz (Figure 4) -58 dB Crosstalk VCT1 Crosstalk between any two switches, RS = RL = 50Ω, f = 50MHz (Figure 4) -49 dB LOGIC INPUTS (SEL) Input-Low Voltage Input-High Voltage VIL VDD = +3.0V VIH VDD = +3.6V Input-Voltage Hysteresis VHYST Input Leakage Current ILEAK 0.8 2.0 V 100 VDD = +3.6V, VCOM_ or VNC_ or VNO_ = 0V -1 V mV +1 µA Note 2: Maximum and minimum limits over temperature are guaranteed by design and characterization. Device is production tested at TA = +25°C. Note 3: Negative current is going into COM_ and out of NO_ or NC_. Note 4: Guaranteed by design. _______________________________________________________________________________________ 3 MAX4886 ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) 7.8 VDD = 3.6V 7.7 8 ON-RESISTANCE (Ω) 7.9 9 7.6 7.5 TA = +25°C 7 TA = -40°C 6 5 4 3 7.4 2 7.3 1 7.2 TA = +85°C 0.6 1.2 1.8 2.4 3.0 3.6 VCOM_ (V) TA = +25°C 550 TA = -40°C 500 400 3.0 0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3 VCOM_ (V) 3.1 3.2 3.3 VDD (V) FREQUENCY RESPONSE LEAKAGE CURRENT vs. TEMPERATURE MAX4886 toc05 0 MAX4886 toc04 10 -1 -2 ON-LOSS (dB) LEAKAGE CURRENT (nA) TA = +85°C 600 450 0 0 650 SUPPLY CURRENT (μA) 8.0 700 MAX4886 toc02 MAX4886 toc01 VDD = 3.3V VDD = 3V 8.1 SUPPLY CURRENT vs. SUPPLY VOLTAGE ON-RESISTANCE vs. TEMPERATURE 10 MAX4886 toc03 ON-RESISTANCE vs. VCOM_ 8.2 ON-RESISTANCE (Ω) MAX4886 Quad, High-Speed HDMI/DVI 2:1 Digital Video Switch 1 -3 -4 -5 -6 -7 -8 0.1 -40 4 -15 10 35 TEMPERATURE (°C) 60 85 1 10 100 1000 10,000 FREQUENCY (MHz) _______________________________________________________________________________________ 3.4 3.5 3.6 Quad, High-Speed HDMI/DVI 2:1 Digital Video Switch PIN NAME FUNCTION 1, 4, 10, 14, 17, 19, 21, 39, 41 GND Ground 5, 8, 13, 18, 20, 30, 40, 42 VDD Power-Supply Voltage Input. Bypass VDD to GND with a 0.1μF or larger ceramic capacitor. 2 COM1+ Data Signal Inputs/Outputs 3 COM1- Data Signal Inputs/Outputs 6 COM2+ Data Signal Inputs/Outputs 7 COM2- 9 SEL 11 COM3+ 12 COM3- Data Signal Inputs/Outputs 15 COM4+ Data Signal Inputs/Outputs 16 COM4- 22 NO4- 23 NO4+ Differential Pair. Data Signal Inputs/Outputs. 24 NO3- Differential Pair. Data Signal Inputs/Outputs. 25 NO3+ Differential Pair. Data Signal Inputs/Outputs. 26 NC4- Differential Pair. Data Signal Inputs/Outputs. 27 NC4+ Differential Pair. Data Signal Inputs/Outputs. 28 NC3- Differential Pair. Data Signal Inputs/Outputs. 29 NC3+ Differential Pair. Data Signal Inputs/Outputs. 31 NO2- Differential Pair. Data Signal Inputs/Outputs. 32 NO2+ Differential Pair. Data Signal Inputs/Outputs. 33 NO1- Differential Pair. Data Signal Inputs/Outputs. 34 NO1+ Differential Pair. Data Signal Inputs/Outputs. 35 NC2- Differential Pair. Data Signal Inputs/Outputs. 36 NC2+ Differential Pair. Data Signal Inputs/Outputs. 37 NC1- Differential Pair. Data Signal Inputs/Outputs. 38 NC1+ Differential Pair. Data Signal Inputs/Outputs. EP EP Data Signal Inputs/Outputs Select Input. Logic input for switch connection (see Table 1). Data Signal Inputs/Outputs Data Signal Inputs/Outputs Differential Pair. Data Signal Inputs/Outputs. Exposed Paddle. Connect EP to GND. _______________________________________________________________________________________ 5 MAX4886 Pin Description Quad, High-Speed HDMI/DVI 2:1 Digital Video Switch MAX4886 Functional Diagram Table 1. Switch Truth Table SEL VDD FUNCTION 0 COM_ to NC_ 1 COM_ to NO_ MAX4886 COM1+ COM1- NC1+ NC1+ NO1+ NO1- COM2+ NC2+ COM2- NC2NO2+ NO2- COM3+ NC3+ COM3- NC3NO3+ NO3- COM4+ NC4+ COM4- NC4NO4+ NO4- SEL GND Detailed Description The MAX4886 high-speed analog switch is ideal for HDMI/DVI switching applications, permitting 2:1 or 1:2 switching. The MAX4886 contains four differential pairs for HDMI or DVI switching. The MAX4886 connects either one monitor to one of two digital video signals or one HDMI/DVI output to one of two connectors or loads. The MAX4886 differential switches are based on an nFET architecture with an internal charge pump for gate overdrive. This advanced architecture results in an extremely low capacitance and on-resistance needed for an excellent returns loss. The MAX4886 features an 8Ω (typ) on-resistance and 2.5pF on-capacitance switches for routing RGB and CLK video signals. 6 The MAX4886 switches are identical, and any of the switches can be used to route RGB and CLK video signals. The device will also be useful in other high-speed switching applications such as LVDS and LVPECL. Analog-Signal Levels Signal inputs over the full voltage range (0V to VDD) are passed through the switch with minimal change in onresistance (see the Typical Operating Characteristics section). The switches are bidirectional. Therefore, COM_, NC_, and NO_ can be either inputs or outputs. Logic Inputs (SEL) The MAX4886 has a logic input that controls the switch on/off function. Use SEL to switch COM_ to NO_ or COM_ to NC_. Table 1 and the Functional Diagram illustrate the MAX4886 Truth Table. Applications Information Power-Supply Bypassing and Sequencing Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maximum ratings, because stresses beyond the listed ratings can cause permanent damage to the device. Always sequence VDD on first, followed by the switch inputs and the logic inputs. Bypass at least one VDD input to ground with a 0.1µF capacitor as close to the device as possible. Use the smallest physical size possible for optimal performance. It is also recommended to bypass more than one VDD input. A good strategy is to bypass one VDD input with a 0.1µF capacitor and at least a second VDD input with a 1nF to 10nF capacitor. (Use 0603 or smaller physical size ceramic capacitor). PC Board (PCB) Layout High-speed switches such as the MAX4886 require proper PCB layout for optimum performance. Ensure that impedance-controlled PCB traces for high-speed signals are matched in length, and as short as possible. Connect the MAX4886 exposed paddle to a solid ground plane. _______________________________________________________________________________________ Quad, High-Speed HDMI/DVI 2:1 Digital Video Switch MAX4886 VDD VN_ V DD COM_ NC_ OR NO_ VOUT RL CL SEL GND LOGIC INPUT CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VN_ RL + RON ( ) Figure 1. Switching Time +3.3V VDD MAX4886 IN+ IN- 50Ω TRACE COM1+ NC1+ 50Ω TRACE 50Ω TRACE COM1- NC1- 50Ω TRACE GND COM1+ COM1- NC1+ NC1- OUT+ OUT- SEL IN+ IN- OUT+ tPD1 tPD2 OUT- Figure 2. Propagation Delay _______________________________________________________________________________________ 7 MAX4886 Timing Circuits/Timing Diagrams Quad, High-Speed HDMI/DVI 2:1 Digital Video Switch MAX4886 Timing Circuits/Timing Diagrams (continued) +3.3V VDD MAX4886 IN+ IN- 50Ω TRACE COM1+ NC1+ 50Ω TRACE 50Ω TRACE COM1- NC1- 50Ω TRACE VDD COM1+ COM1- OUT+ OUT- SEL IN+ INtPLH1 tPLH1 NC1+ OUT+ 50% NC1- tPLH2 tPLH2 50% 50% 50% OUT- Figure 3. Skew Measurements Additional Applications Information In a typical application (see Figure 5), the MAX4886 and MAX4929 are used to route the TMDS signals and low-frequency signals between two HDMI inputs. In another application (see Figure 6), the MAX4886 is used in a notebook to route high-frequency DVI port on the computer or to the connector on the docking station. The MAX4886 routes four differential signals (RGB and CLK) either to the DVI connector or to the docking station port. The switch is inherently bilateral and may be used as a 2:1 or 1:2 mux without penalties. 8 Chip Information PROCESS: BiCMOS Connect exposed paddle to GND. _______________________________________________________________________________________ Quad, High-Speed HDMI/DVI 2:1 Digital Video Switch MAX4886 3dB BANDWIDTH/INSERTION LOSS COM1+ 2 50Ω TRACE NETWORK ANALYZER CROSSTALK COM2+ 6 50Ω TRACE NETWORK ANALYZER NC1+ 38 50Ω TRACE NETWORK ANALYZER NC2+ 36 R13 49.9Ω COM27 50Ω TRACE NETWORK ANALYZER NC235 R14 49.9Ω OFF-ISOLATION COM3+ 11 50Ω TRACE NETWORK ANALYZER NC3+ 29 50Ω TRACE NETWORK ANALYZER R15 49.9Ω Figure 4. On-Loss, Off-Isolation, and Crosstalk Typical Application Diagrams HDMI1 NC_ TMDS MAX4886 TMDS RX 8 LOW-FREQUENCY SIGNALS R COM_+ G COM_- B CK HDMI2 NC_ TMDS 8 MCU HPIR HPD MAX4929 5V (HPIR), HPD, DDC/SCL, DDC/SDA SEL EDID EEPROM Figure 5. TV/Monitor Application _______________________________________________________________________________________ 9 MAX4886 Timing Circuits/Timing Diagrams (continued) Quad, High-Speed HDMI/DVI 2:1 Digital Video Switch MAX4886 Typical Application Diagrams (continued) NO1+ MAX4886 NO1NO2+ NO2COM1+ COM1DVI SIGNALS DOCKING STATION NO3+ NO3NO4+ NO4- COM2+ COM2- COM3+ NC1+ COM3- NCINC2+ NC2- COM4+ COM4- NC3+ NC3- MONITOR NC4+ NC4- SEL SEL_DOCK DVI CONNECTOR Figure 6. Notebook Application Pin Configuration NO4- NO4+ NO3- NO3+ NC4- NC4+ NC3- NC3+ VDD NO2- NO2+ NO1- NO1+ NC2- NC2+ NC1- NC1+ TOP VIEW 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 GND GND 39 20 VDD VDD 40 MAX4886 GND 41 19 GND *EP VDD 42 18 VDD 8 9 10 11 12 13 14 15 16 17 GND COM1- GND VDD COM2+ COM2- VDD SEL GND GND 7 COM4- 6 COM4+ 5 GND 4 VDD 3 COM3- 2 COM3+ 1 COM1+ + TQFN *CONNECT EXPOSED PADDLE TO GROUND. 10 ______________________________________________________________________________________ Quad, High-Speed HDMI/DVI 2:1 Digital Video Switch ______________________________________________________________________________________ 42L THIN QFN.EPS ° 11 MAX4886 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) MAX4886 Quad, High-Speed HDMI/DVI 2:1 Digital Video Switch Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products Boblet is a registered trademark of Maxim Integrated Products, Inc.