1FEATURES
2• Supports SMPTE 259M (C) Serial Digital Video
Standard
• Supports 270 Mbps Serial Data Rate Operation
• Supports DVB-ASI at 270 Mbps
• Single 3.3V Supply Operation
• 330 mW Typical Power Consumption
• Two Differential, Reclocked Outputs
• Choice of Second Reclocked Output or Low-
Jitter, Differential, Data-Rate Clock Output
• Single 27 MHz External Crystal or Reference
Clock Input
• Lock Detect Indicator Output
• Output Mute Function for Data and Clock
• Auto/Manual Reclocker Bypass
• Differential LVPECL Compatible Serial Data
Inputs and Outputs
• LVCMOS Control Inputs and Indicator Outputs
• 20-Pin HTSSOP Package
• Industrial Temperature Range: -40°C to +85°C
• Footprint Compatible with the LMH0046 and
LMH0346

APPLICATIONS
• SDTV Serial Digital Video Interfaces for:
– Digital Video Routers and Switchers
– Digital Video Processing and Editing
Equipment
– DVB-ASI Equipment
– Video Standards and Format Converters

DESCRIPTION
The LMH0026 SD SDI Reclocker retimes serial digital
video data conforming to the SMPTE 259M (C)
standard. The LMH0026 operates at the serial data
rate of 270 Mbps and also supports DVB-ASI
operation at 270 Mbps.
The LMH0026 retimes the incoming data to suppress
accumulated jitter. The LMH0026 recovers the serial
data-rate clock and optionally provides it as an
output. The LMH0026 has two differential serial data
outputs; the second output may be selected as a low-
jitter, data-rate clock output. Controls and indicators
are: serial clock or second serial data output select,
SD indicator output, lock detect output, auto/manual
data bypass, and output mute. The serial data inputs,
outputs, and serial data-rate clock outputs are
differential LVPECL compatible. The CML serial data
and serial data-rate clock outputs are suitable for
driving 100Ω differentially terminated networks. The
control logic inputs and outputs are LVCMOS compatible.
The LMH0026 is powered from a single 3.3V supply.
Power dissipation is typically 330 mW. The device is
housed in a 20-pin HTSSOP package.