1. Description

The Lontium LT1258 is a dual lane 2:1 multiplexer and 1:2 switch or splitter with signal conditioning suitable for high-speed bus applications with data rates up to 12.5 Gbps. The continuous time linear equalizer (CTLE) of the receiver provides adjustable boost to compensate up to 30dB insertion-loss at 6.25 GHz. The transmitter features a programmable amplitude voltage levels to be selectable up to 1200 mVp-p and de-emphasis up to 12 dB.
TheLT1258can be configured to support PCIe,
CAUI-10, SAS/SATA, 10G-KR, CPRI, USB3.x or other signaling protocols.
The LT1258 is fabricated in advanced CMOS process and implemented in 10mm x 5.5mm QFN54 package. This package is RoHS compliant and specified to operate from -40°C to +85°C.

2.Features
1  Support 100Mbps to 12.5Gbps Data Rate

2  Input Signal Detect and RX Detect Support

3 2x2 Analog Cross-Point Switch

4 Data Lane Polarity Swappable

5 Up to 30dB Equalization at 6.25GHz

6 Programmable De-emphasis up to 12dB

7 Up to 1.2V output Swing

8 Programmable Through Pin Selection, EEPROM or SMBus Interface

9 Selectable 2.5-V or 3.3-V Supply Voltage

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