2.7Gbps Dual 2X2 Crosspoint Switch

Micrel 3.3V, 2.7Gbps DUAL 2X2 CROSSPOINT SWITCH SuperLite™ SY55859L SY55859L FINAL SuperLite™ FEATURES s Pin-for-pin, plug-in compatible to the MAX3840 s Supply voltage operation: +3.3V ±10% s Low jitter: • 2ps rms random jitter • 5ps pk-pk deterministic jitter s Power saving output disable feature s 15ps channel-to-channel skew s Fast CML outputs: <100ps tr /tf s Available in a small (5mm x 5mm) 32-pin EPAD-MLF package SuperLite™ DESCRIPTION APPLICATIONS s SONET/SDH optical transport s High-speed backplane redundancy s Add-drop multiplexers CROSS REFERENCE TABLE Micrel Semiconductor SY55859LMI Maxim MAX3840EGJ The SY55859L is a dual CML 2x2 crosspoint switch optimized for high-speed data and/or clock applications (up to 2.7Gbps or 2.7GHz) where low jitter and skew are critical. This device is pin-for-pin, plug-in compatible to the MAX3840. Each 2x2 of the SY55859L routes any input to any output, and thus can distribute or multiplex a clock or data stream. The I/O architecture is fully differential and CML compatible. Both inputs and outputs are optimized for 50Ω transmission lines. The inputs (DA 0-1 and DB 0-1) are internally terminated with 50Ω, thus eliminating external termination, and the outputs (QA0-1 and QB0-1) include 50Ω source termination. Furthermore, a power-saving output enable feature is provided which powers-down unused outputs. The SY5859L operates from a +3.3V ±10% supply, and is guaranteed over the industrial (–40°C to +85°C) temperature range. It is available in a 32-pin (5mm x 5mm) www.DataSheet4U.com package. MLF For applications that require either lower voltage operation or a more flexible input interface (for applications such as AC–coupled LVPECL inputs), consider the SY55858U. TYPICAL APPLICATIONS CIRCUIT TYPICAL PERFORMANCE Data Limiting Amplifier CDR Laser Driver Clock SY55859L Data Limiting Amplifier CDR Laser Driver Clock Output Swing (60mV/div.) TIME (50ps/div.) 2.7Gbps, 223 – 1 PRBS SuperLite is a trademarks of Micrel, Inc. MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc. Rev.: B Amendment: /0 1 Issue Date: March 2003 Micrel SuperLite™ SY55859L PACKAGE/ORDERING INFORMATION ENA1 /DA1 DA1 ENA0 SELA0 /DA0 DA0 SELA1 Ordering Information GND VCC QA0 /QA0 VCC QA1 /QA1 VCC ENB1 DB1 /DB1 ENB0 SELB0 DB0 /DB0 SELB1 1 2 3 4 5 6 7 8 32 3130 29 28 27 26 25 24 23 22 32-pin 21 20 MLF 19 18 17 9 10 11 12 13 14 15 16 GND VCC /QB0 QB0 VCC /QB1 QB1 VCC Part Number SY55859LMI SY55859LMITR* *Tape and Reel Package Type H32-1 H32-1 Operating Range Industrial Industrial Package Marking SY55859LMI SY55859LMI PIN DESCRIPTION Pin Number 1 2 3 4 5 6 7 8 9, 24 10, 13, 16, 17, 20, 23 11 12 14 15 18 19 21 22 25 26 27 28 29 30 31 32 EP Pin Name ENB1 DB1 /DB1 ENB0 SELB0 DB0 /DB0 SELB1 GND VCC /QB0 QB0 /QB1 QB1 /QA1 QA1 /QA0 QA0 SELA1 DA0 /DA0 SELA0 ENA0 DA1 /DA1 ENA1 Exposed Pad Pin Function TTL Input. Channel B1 Output Enable. Setting this pin inactive low powers down QB1 and /QB1. Do not leave floating. CML Input. Channel B1 true input. CML Input. Channel B1 complement input. TTL Input. Channel B0 Output Enable. Setting this pin inactive low powers down QB0 and /QB. Do not leave floating. TTL Input. Channel B0 output select. Please refer to Table 2. Do not leave floating. CML Input. Channel B0 true input. CML Input. Channel B0 complement input. TTL Input. Channel B1 output select. Please refer to Table 2. Do not leave floating. Supply ground. Most negative supply voltage. Positive supply. CML Output. Channel B0 complement output. CML Output. Channel B0 true output. CML Output. Channel B1 complement output. CML Output. Channel B1 true output. CML Output. Channel A1 complement output. CML Output. Channel A1 true output. CML Output. Channel A0 complement output. CML Output. Channel A0 true output. TTL Input. Channel A1 output select. Please refer to Table 1. Do not leave floating. CML Input. Channel A0 true input. CML Input. Channel A0 complement input. TTL Input. Channel A0 output select. Please refer to Table 1. Do not leave floating. TTL Input. Channel A0 output enable. Setting this pin inactive low powers down QA0 and /QA0. Do not leave floating. CML Input. Channel A1 true input. CML Input. Channel A1 complement input. TTL Input. Channel A1 output enable. Setting this pin inactive low powers down QA1 and /QA1. Do not leave floating. Ground. This must be soldered to circuit board ground for proper electrical and thermal operation. 2 Micrel SuperLite™ SY55859L Absolute Maximum Ratings(Note 1) Supply Voltage (VCC) .................................. –0.5V to +6.0V CML Input Voltage (VIN) .............................. –0.5V to +6.0V TTL Control Input Voltage (VIN) ........... –0.5V to VCC +0.5V CML Output Voltage (VOUT) ......... VCC –1.0V to VCC +0.5V CML Output Current (IOUT) ........................................ 22mA Lead Temperature (soldering, 10sec.) .................... +300°C Storage Temperature (TS) ....................... –65°C to +150°C Note 1. Operating Ratings(Note 2) Supply Voltage (VCC) .................................. +3.0V to +3.6V Ambient Temperature (TA) ......................... –40°C to +85°C Junction Temperature (TJ) ........................................ 160°C Package Thermal Resistance MLF (θJA) still-air .............................................................. 28°C/W 500lfpm ............................................................ 20°C/W MLF (θJC) .............................................................. 4°C/W Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. This is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to ABSOLUTE MAXIMUM RATlNG conditions for extended periods may affect device reliability. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. Note 2. DC ELECTRICAL CHARACTERISTICS(1) TA = –40°C to +85°C Symbol VCC ICC Note 1. Parameter Power Supply Voltage Power Supply Current Specification for packaged product only. Condition Min 3.0 Typ 3.3 160 Max 3.6 190 Units V mA No Load, Over Supply Voltage; All Outputs Enabled CML DC ELECTRICAL CHARACTERISTICS(1) VCC = 3.0V to 3.6V; GND = 0V; TA = –40°C to +85°C(Note 2) Symbol VOUT ROUT VOCM VIS VDIFF Parameter CML Differential Output Swing Differential Output Impedance CML Output Common Mode Voltage CML Input Voltage Range CML Differential Input Voltage Swing CML Single-ended Input Impedance Note 1. Note 2. Specification for packaged product only. The device is guaranteed to meet the DC specifications, shown in the table above, after thermal equilibrium has been established. The device is tested in a socket such that transverse airflow of ≥500lfpm is maintained. Condition RL = 50Ω to VCC, Figure 3 Figure 2 RL = 50Ω to VCC, Figure 3 Figure 4 Figure 5 Figure 1 Min 640 85 Typ 800 100 VCC–0.2 Max 1000 115 Units mVp-p Ω V VCC–0.8 300 42.5 50 VCC+0.4 1600 57.5 V mVp-p Ω TTL CONTROL ELECTRICAL CHARACTERISTICS(1) VCC = 3.0V to 3.6V; GND = 0V; TA = –40°C to +85°C(Note 2) Symbol VIH VIL IIH IIL Note 1. Note 2. Parameter TTL Input HIGH Voltage TTL Input LOW Voltage TTL Input HIGH Current TTL Input LOW Current Specification for packaged product only. Condition Min 2.0 Typ Max Units V 0.8 –10 –10 +10 +10 V µA µA The device is guaranteed to meet the DC specifications, shown in the table above, after thermal equilibrium has been established. The device is tested in a socket such that transverse airflow of ≥500lfpm is maintained. 3 Micrel SuperLite™ SY55859L AC ELECTRICAL CHARACTERISTICS(1) VCC = 3.0V to 3.6V; GND = 0V; TA = –40°C to +85°C(Note 2) Symbol fMAX fMAX tPD RJ DJ tSKDIFF tSKEW tr,tf Note 1. Note 2. Note 3. Note 4. Note 5. Parameter Maximum NRZ Data Rate Maximum Clock Rate Propagation Delay from Input-to-Output Random Jitter Deterministic Jitter CML Output Differential Skew CML Output Channel-to-Channel CML Output Rise/Fall Times Condition Min Typ 2.7 2.7 275 Max Units Gbps GHz ps ps(rms) Note 3 Note 4 Any Differential Pair – Duty Cycle Distortion Note 5, Any Two Outputs (20% to 80%) 2 5 7 15 80 20 25 40 135 ps(pk-pk) ps ps ps Specification for packaged product only. AC characteristics are guaranteed by design and characterization. Tested using environment of Figure 6, 50Ω equivalent load. Measured with 100mVp-p noise (f ≤ 2MHz) on the power supply. Deterministic jitter (DJ) is the arithmetic sum of pattern-dependent jitter and pulse width distortion. This represents the skew on a QA and QB output with their inputs receiving the same signal. 4 Micrel SuperLite™ SY55859L TYPICAL OPERATING CHARACTERISTICS VCC D 50Ω 1.2mA Valid VIS(max) Invalid D, /D Inputs 50Ω /D 1.2mA SY55859L VIS(min) Invalid Figure 4. Input Range Figure 1. Input Structure vcc D VDIFF 2 50Ω 50Ω Q /Q /D Figure 5a. Input Levels 16mA |D – /D| SY55859L VDIFF Figure 2. Output Structure Q VOUT 2 VOCM /Q 0V Figure 5b. Input Levels Q 50Ω 100Ω Figure 3a. Output Levels /Q |Q — /Q| 50Ω VOUT SY55859L Figure 3b. Output Levels Figure 6. Output Interface 5 Micrel SuperLite™ SY55859L TYPICAL OPERATING CHARACTERISTICS Channel-to-Channel Skew Histogram 500 SUPPLY CURRENT (mA) Supply Current vs. Temperature 180 160 140 120 100 80 60 40 20 0 -40 -20 0 20 40 60 TEMPERATURE (°C) 80 No Outputs Enabled 4 Outputs Enabled 3 Outputs Enabled 2 Outputs Enabled 1 Output Enabled 400 300 200 100 0 -30 -20 -10 0 10 SKEW (ps) 20 30 6 Micrel SuperLite™ SY55859L FUNCTIONAL DESCRIPTION SY55859L is a dual cross point with excellent pin-to-pin and part-to-part skew matching. As shown in table 1, based on the logic value at TTL input SELA0, output QA0 replicates either input DA0 or DA1. TTL input SELA1 selects whether output QA1 replicates input DA0 or DA