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SN65LVCP1414RLJR

14.2Gbps quad-channel linear equalizer/redriver, CML I/O, 17dB EQ, I2C/GPIO, 38-WQFN (obsolete)

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Manufacturer Part：

SN65LVCP1414RLJR

Package：

38-WQFN (5 × 7 × 0.75 mm, 0.5mm pitch)

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Description

Product Overview

The SN65LVCP1414RLJR is a 14.2-Gbps quad-channel, dual-mode linear equalizer (redriver) from Texas Instruments, packaged in a 38-pin WQFN (RLJ) 5 × 7 mm package. It is an asynchronous, protocol-agnostic, low-latency device optimized for compensating signal losses in backplane and active cable interconnects. The device supports both backplane and cable equalization modes with up to 17 dB of analog equalization at 7.1 GHz and is configurable via I2C or GPIO interface. Note: This part has been obsoleted; the substitute is SN65LVCP1414RLJT.

Key Specifications

Type Buffer / ReDriver (Linear Equalizer)
Data Rate (Max) 14.2 Gbps
Channels 4 (uni-directional)
Input / Output CML / CML
Equalization 17 dB at 7.1 GHz (1 dB step control)
Output Linear Dynamic Range 1200 mV
Bandwidth > 20 GHz (typical)
Supply Voltage 2.5V or 3.3V
Power per Channel 80 mW typical at 2.5V
Delay 65 ps
Package 38-WQFN (5 × 7 × 0.75 mm)
Operating Temperature -40°C to +85°C
Part Status Obsolete

Features

  • 14.2 Gbps quad-channel linear equalizer for backplane and cable interconnects
  • Dual-mode equalization: backplane mode and cable mode with 1 dB step control
  • 17 dB analog equalization at 7.1 GHz preserves signal waveform for optimal DFE performance
  • I2C or GPIO control interface for flexible configuration
  • Independent per-channel control of equalization, path gain, and output dynamic range via I2C
  • Supports out-of-band (OOB) signaling
  • Low power: 80 mW per channel at 2.5V

Applications

  • 10GbE, 16GFC, and 10G SONET backplane links
  • SAS, SATA, CPRI, and OBSAI cable interconnects
  • Infiniband and 10GBase-KR signal conditioning
  • Active copper cable assemblies
  • Telecom and datacom line card signal integrity

The SN65LVCP1414 is an asynchronous, protocol-agnostic, low-latency, four-channel linear equalizer optimized for data rates up to 14.2 Gbps. It compensates for signal losses in backplane and active cable applications while preserving the transmitted signal waveform to ensure optimal decision feedback equalizer (DFE) performance. The device operates in dual mode — backplane or cable — with up to 17 dB of analog equalization at 7.1 GHz, adjustable in 1 dB steps. Configurable via I2C or GPIO, each channel can be independently controlled for equalization, path gain, and output dynamic range. The RLJR variant in 38-WQFN tape-and-reel packaging has been obsoleted; the substitute RLJT variant remains available.

The SN65LVCP1414 operates as a linear equalizer that amplifies and shapes incoming high-speed differential signals to compensate for frequency-dependent channel losses. The input stage accepts CML-level signals and applies programmable continuous-time linear equalization (CTLE) that selectively boosts high-frequency components attenuated by the PCB trace or cable. In backplane mode, the equalizer targets the loss profile typical of FR-4 traces; in cable mode, it addresses the different loss characteristic of copper cables. The equalized signal is then amplified through a programmable gain stage and delivered to the output driver with adjustable output dynamic range up to 1200 mV. The linear equalization approach preserves the signal waveform and noise profile, allowing downstream DFE circuits in the ASIC/FPGA to perform optimal digital equalization. Configuration is managed through I2C registers (8-bit address map) or GPIO pins.

Pin Name Type Function
1 IN0_N Input Channel 0 negative CML input
2 IN0_P Input Channel 0 positive CML input
3-4 VCC Power 2.5V/3.3V supply
5 OUT0_N Output Channel 0 negative CML output
6 OUT0_P Output Channel 0 positive CML output
7-8 SDA/SCL I/O I2C data and clock (when I2C mode selected)
9 EQ_MD Input Equalizer mode select: 0=cable, 1=trace
10 SW_GPIO Input Control mode: 0=I2C, 1=GPIO
11 PWRDOWN Input Power down (active high)
12-13 GPIO0/GPIO1 Input GPIO control pins for EQ/gain settings
14 GND Power Ground
15-16 OUT1_N/OUT1_P Output Channel 1 CML output pair
17-18 IN1_N/IN1_P Input Channel 1 CML input pair
19-22 CH2/CH3 I/O I/O Channels 2-3 input/output pairs
EP Thermal Pad Power Exposed thermal pad (connect to GND)
  • 10GbE and 10GBase-KR backplane signal conditioning in data center switches
  • 16G Fibre Channel cable interconnect equalization in SAN fabrics
  • CPRI/OBSAI front-haul link signal integrity in base stations
  • SAS 3.0 (12 Gbps) active cable assemblies
  • InfiniBand DDR/QDR backplane redriver applications
Manufacturer Part Number Package Notes
TI SN65LVCP1414RLJT 38-WQFN Parametric equivalent substitute (active)
TI DS100DF410 WQFN-48 4-channel retimer up to 25.8 Gbps
TI LMH0346 WQFN-24 Dual-channel 12G SDI equalizer
MaxLinear XR52810 QFN-48 4-channel 12.5G redriver
Renesas PI2EQX6884 WQFN-42 4-channel 10G linear redriver
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