1FEATURES
2• SMPTE 259M and SMPTE 344M Compliant
• Supports DVB-ASI at 270 Mbps
• Data Rates: 125 Mbps to 540 Mbps
• Equalizes up to 400 Meters of Belden 1694A at
270 Mbps
• Manual Bypass and Output Mute with a
Programmable Threshold
• Single-Ended or Differential Input
• 50Ω Differential Outputs
• Single 3.3V Supply Operation
• Industrial Temperature Range: −40°C to +85°C
• 208mW Typical Power Consumption with 3.3V
Supply
• Footprint Compatible with the LMH0044 and
the GS9074A

APPLICATIONS
• SMPTE 259M and SMPTE 344M Serial Digital
Interfaces
• Serial Digital Data Equalization and Reception
• Data Recovery Equalization

DESCRIPTION
The LMH0074 SMPTE 259M / 344M 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 540 Mbps and
supports SMPTE 259M and SMPTE 344M.
The LMH0074 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.