1FEATURES
• SMPTE ST 424, SMPTE ST 292, and SMPTE ST
259-C Compliant
• Supports 125 Mbps, 270 Mbps, 1.4835 Gbps,
1.485 Gbps, 2.967 Gbps, and 2.97 Gbps Serial
Data Rate Operation
• Supports DVB-ASI at 270 Mbps and MADI at
125 Mbps
• 100 mW Typical Power Consumption (145 mW
with Both Output Drivers Enabled)
• Integrated 4:1 Multiplexed Input with 0-60” FR4
Equalizer and Independent Signal Detect on
Each Channel
• Two Differential, Reclocked Outputs with
Option of Recovered Clock
• Output De-Emphasis to Compensate for up to
40” of FR4 Trace Losses
• 64 x 64 Point Eye Opening Monitor
• 27 MHz External Reference or Reference-less
Operation
• Internally Terminated 100Ω Inputs with Rail-to-
Rail Input Common Mode Voltage
• Internally Terminated 100Ω LVDS Outputs with
Programmable Output Common Mode Voltage
and Swing
• Single 2.5V Supply Operation
• Power Save Mode with Device Power Down
Control
• 48-Pin WQFN Package (7 x 7 mm)
• Industrial Temperature Range: -40°C to +85°C
• Footprint Compatible with the LMH0356 in Pin
Mode

APPLICATIONS
• SMPTE ST 424, SMPTE ST 292, and SMPTE ST
259 Serial Digital Interfaces
• Broadcast Video Routers, Switchers, and
Distribution Amplifiers

DESCRIPTION
The LMH0376 3 Gbps HD/SD SDI Low Power
Reclocker with Integrated Eye Monitor and 4:1 Input
Mux retimes serial digital video data conforming to
the SMPTE ST 424, SMPTE ST 292, and SMPTE ST
259-C standards. The reclocker operates at serial
data rates of 125 Mbps, 270 Mbps, 1.4835 Gbps,
1.485 Gbps, 2.967 Gbps, and 2.97 Gbps.
The LMH0376 automatically detects the incoming
data rate and retimes the data to suppress
accumulated jitter. The reclocker recovers the serial
data-rate clock and optionally provides it as an
output.
The LMH0376 includes an integrated 4:1 input
multiplexer for selecting one of four input data
streams for retiming. Each of the four inputs has an FR4 equalizer capable of equalizing 0-60” of FR4
trace length. Each input also includes independent
signal detection with a programmable threshold.
The LMH0376 has two differential serial data outputs
and offers flexibility in selecting the output signals
between the reclocked data, recovered clock,
bypassed data, or the bypassed data from an
independently selected input channel. The output drivers offer programmable de-emphasis for up to 40”
of FR4 trace losses, in addition to programmable
common mode voltage and swing for flexible
interfacing.
The LMH0376 provides a 64 x 64 point eye monitor
for analyzing the eye quality of the incoming signal.
The LMH0376 supports two modes of operation. In
pin mode, the LMH0376 operates with control pins to
set its operating state, and is footprint compatible with
the LMH0356 reclocker. In SPI mode, an optional SPI
serial interface can be used to configure and monitor multiple LMH0376 devices in a daisy-chain
configuration.