LMH0344 3 Gbps HD/SD SDI Adaptive Cable Equalizer | TI.com

This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
3 Gbps HD/SD SDI Adaptive Cable Equalizer


Recommended alternative parts

  • LMH0394  -  3G SDI Cable Equalizer
  • LMH1219  -  12G SDI Cable Equalizer with Integrated Reclocker
  • LMH0318  -  3G SDI Reclocker with Integrated Cable Driver
  • LMH0324  -  3G SDI Dual Output Low Power Adaptive Cable Equalizer


The LMH0344 3-Gbps HD – SD SDI Adaptive Cable Equalizer is designed to equalize data transmitted over cable (or any media with similar dispersive loss characteristics). The equalizer operates over a wide range of data rates from 125 Mbps to 2.97 Gbps and supports ST 424, ST 292, ST 344, and ST 259.

The LMH0344 device implements DC restoration to correctly handle pathological data conditions. The equalizer may be driven in either a single-ended or differential configuration.

Additional features include separate carrier detect and output mute pins which may be tied together to mute the output when no signal is present. A programmable mute reference is provided to mute the output at a selectable level of signal degradation.

For applications using the 4:4:4:4 10 bits video format, the LMH0394 cable equalizer will provide better performance.

The device is available in two space-saving packages: a 4-mm × 4-mm 16-pin WQFN and even more space-efficient 3-mm × 3-mm 25-ball CS-BGA package.


  • Compliant With ST 424, ST 292, ST 344, and ST
  • Supports DVB-ASI at 270 Mbps
  • Wide Range of Data Rates: 125 Mbps to 2.97
  • Equalizes up to 120 Meters of Belden 1694A at
    2.97 Gbps, up to 140 Meters of Belden 1694A at
    1.485 Gbps, or up to 400 Meters of Belden 1694A
    at 270 Mbps
  • Equalizes up to 120m of Belden 1694A at 2.97
    Gbps With 0.3 UI Maximum Output Jitter
  • Manual Bypass and Output Mute With a
    Programmable Threshold
  • Single-Ended or Differential Input
  • 50-Ω Differential Outputs (Internal 50-Ω Pullups)
  • Single 3.3-V Supply Operation
  • 280-mW Typical Power Consumption
  • 16-Pin WQFN or 25-Ball CS-BGA Package
  • Industrial Temperature Range: –40°C to +85°C
  • HBM ESD Rating: 8 kV
  • WQFN Version Footprint Compatible With the
    LMH0044, LMH0384, and LMH0074
  • Replaces the Semtech GS2974A or GS2974B


Compare all products in Serial digital interface (SDI) Email Download to Excel
Part number Order Function Data rate (Max) (Gbps) Power consumption (mW) Control interface Package Group Package size: mm2:W x L (PKG) Operating temperature range (C)
LMH0344 Order now Equalizer     2.97     280     Pin     WQFN | 16
csBGA | 25    
16WQFN: 16 mm2: 4 x 4 (WQFN | 16)
25csBGA: 9 mm2: 3 x 3 (csBGA | 25)    
-40 to 85    
LMH0324 Order now Equalizer     2.97     78     Pin
WQFN | 24     24WQFN: 16 mm2: 4 x 4 (WQFN | 24)     -40 to 85    
LMH0384 Order now Equalizer     2.97     230     Pin
WQFN | 16     16WQFN: 16 mm2: 4 x 4 (WQFN | 16)     -40 to 85    
LMH0395 Order now Equalizer     2.97     140     Pin
WQFN | 24     24WQFN: 16 mm2: 4 x 4 (WQFN | 24)     -40 to 85