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MAX3785UWL+ Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3785UWL+ Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 8 page 6.25Gbps, 1.8V PC Board Equalizer ________________________________________________________________ Maxim Integrated Products 1 19-2630; Rev 4; 10/08 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. General Description The MAX3785 6.25Gbps equalizer operates from a sin- gle 1.8V supply and compensates for transmission- medium losses encountered with FR-4 transmission lines. Optimized for low-voltage, high-density, DC-cou- pled interconnections between the line card and switch card, the MAX3785 enables a system upgrade path while maintaining a legacy rate of 2.5Gbps to 3.125Gbps. Roughly the size of two 0603 passive com- ponents, the MAX3785 easily provides placement and routing flexibility. The MAX3785 is composed of an equalizer, limiting amplifier, and output driver. For data rates of 3.2Gbps and lower, the MAX3785 equalizes signals for spans up to 40in of FR-4 board material. For data rates up to 6.25Gbps, the MAX3785 compensates for 30in of FR-4 board material. The MAX3785 is coding independent, functioning equally well for 8b/10b or scrambled signals. The MAX3785 features DC-coupled current-mode logic (CML) data inputs and outputs. It is packaged in a tiny 1.5mm × 1.5mm chip-scale package (USCP™) and a 6-pin TDFN package. Applications HSBI for ≤ 6.4Gbps Double IEEE 802.3ae XAUI Double STM-16/OC-48 Features ♦ Single 1.8V Supply ♦ Very Low Power, 60mW ♦ Spans 30in with FR-4 at 6.25Gbps ♦ Operates from 1.0Gbps to 6.4Gbps ♦ Coding Independent, 8b/10b or Scrambled ♦ DC-Coupled CML Inputs and Outputs ♦ Small 1.5mm × 1.5mm Footprint Ordering Information PART TEMP RANGE PIN-PACKAGE MAX3785UBL 0°C to +85°C 6 UCSP (3 3) MAX3785UWL+ 0°C to +85°C 6 WLP MAX3785UTT 0°C to +85°C 6 TDFN-EP* MAX3785UTT+ 0°C to +85°C 6 TDFN-EP* MAX3785ITT -20°C to +85°C 6 TDFN-EP* MAX3785ITT+ -20°C to +85°C 6 TDFN-EP* LINE CARD MAC Rx Rx Tx Tx SWITCH CARD MAX3785 OUT IN 1.8V MAX3785 IN OUT SWITCH ASIC WITH SERDES Rx Tx 1.8V BACKPLANE 6.25Gbps VCC VCC 30in (0.75m) Typical Application Circuit UCSP is a trademark of Maxim Integrated Products, Inc. + Denotes a lead-free/RoHS-compliant package. * EP = Exposed pad. A1 A2 A3 C1 C2 C3 IN- GND OUT- IN+ VCC OUT+ MAX3785UBL MAX3785UTT Δ 3 x 3 UCSP TDFN TOP VIEW (BUMPS ON BOTTOM OF DIE) GND OUT+ OUT- 1 6 IN+ 5VCC IN- 2 34 Pin Configurations |
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