MAX3984 19-0868 Rev 0 7/07 1Gbps to 10Gbps Preemphasis Driver with Receive Equalizer General Description Features The MAX3984 is a single-channel, preemphasis driver Drives Up to 10m of 24 AWG Cable with input equalization that operates from 1Gbps to Drives Up to 30in of FR-4 10.3Gbps. It provides compensation for copper links, such as 8.5Gbps Fibre Channel and 10.3Gbps Selectable 1000mV or 1200mV Differential P-P P-P Ethernet, allowing spans of up to 10m with 24 AWG Output Swing cable. The driver provides four selectable preemphasis Selectable Output Preemphasis levels, and the selectable input equalizer compensates for up to 10in of FR-4 circuit board material at 10Gbps. Selectable Input Equalization The MAX3984 also features SFP-compliant loss-of-sig- LOS Detection with Built-In Squelch nal (LOS) detection and TX DISABLE. Selectable out- put swing reduces EMI and power consumption. The Transmit Disable MAX3984 is packaged in a lead-free, 3mm x 3mm, Hot Pluggable 16-pin thin QFN and operates from a 0C to +85C tem- perature range. Ordering Information Applications TEMP PKG PART PIN-PACKAGE 8.5Gbps Fibre Channel Active Cable Assemblies RANGE CODE 10.3Gbps Ethernet STM-64 MAX3984UTE+ 0C to +85C 16 Thin QFN-EP* T1633F-3 +Denotes a lead-free package. *EP = Exposed pad. Pin Configuration appears at end of data sheet. Typical Operating Circuits ACTIVE CABLE ASSEMBLY FABRIC SWTCH DISK ENCLOSURE 5V R PULLUP +3.3V +3.3V 4.7k 10m (24 AWG) V TX DISABLE CC LOS UP TO 10Gbps PE0 PE0 LOS PE1 PE1 V V CC CC OR OR GND IN LEV MAX3984 MAX3984 IN LEV GND 39 COPPER CABLE SWITCH SWITCH OR DIFFERENTIAL OR OUT LEV OUT LEV SERDES 100 TWIN-AX SERDES 0.01F 0.01F 0.01F 22pF Tx+ IN+ OUT+ IN+ OUT+ Rx+ Tx- Rx- IN- OUT- IN- OUT- GND GND 0.01F 0.01F 22pF 0.01F 39 39 +3.3V +3.3V 0.01F 0.01F 22pF 0.01F V Rx+ OUT+ IN+ OUT+ CC IN+ Tx+ Rx- OUT- IN- OUT- IN- Tx- 0.01F 22pF 0.01F 0.01F PE0 PE0 39 V PE1 MAX3984 LOS MAX3984 PE1 V CC CC 5V OR OR GND GND IN LEV IN LEV 4.7k OUT LEV OUT LEV LOS TX DISABLELOS GND GND Typical Operating Circuits continued at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE1Gbps to 10Gbps Preemphasis Driver with Receive Equalizer ABSOLUTE MAXIMUM RATINGS Supply Voltage Range (V ).................................-0.5V to +4.1V Logic Inputs Range (PE1, PE0, CC Continuous Output Current Range TX DISABLE, IN LEV, OUT LEV) ..........-0.5V to (V + 0.5V) CC (OUT+, OUT-) ...............................................-25mA to +25mA LOS Open-Collector Supply Voltage Range Input Voltage Range (IN+, IN-) ..................-0.5V to (V + 0.5V) (with 4.7k pullup) .........................................-0.5V to +5.5V CC Storage Ambient Temperature Range (T ) ...-55C to +150C STG 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. OPERATING CONDITIONS PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V 3.0 3.3 3.6 V CC Supply Noise Tolerance 1MHz f < 2GHz 40 mV P-P Operating Ambient Temperature T 0 25 85 C A Bit Rate NRZ data 1.0 8.5 10.3 Gbps Consecutive Identical Digits CID (bits) 100 Bits (CID) IN LEV = high, Figure 2 360 1200 4.25Gbps < data rate 10.3Gbps Input Swing (Measured IN LEV = high, Figure 2 360 1600 differentially at data source, 1.25Gbps < data rate 4.25Gbps point A of Figure 2 and 3. Pins mV P-P IN LEV = high, Figure 2 LOS and TX DISABLE are 360 2400 1.0Gbps data rate 1.25Gbps floating.) IN LEV = low, Figure 3 100 360 1.0Gbps < data rate 10.3Gbps Time to Reach 50% 1 s Mark/Space Ratio 2 MAX3984