LMH0056

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SNLS236C – AUGUST 2006 – REVISED APRIL 2013

LMH0056 HD/SD SDI Reclocker with 4:1 Input Multiplexer

Check for Samples: LMH0056

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FEATURES

DESCRIPTION

The LMH0056 HD/SD SDI Reclocker with 4:1 Input

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Supports SMPTE 292M and SMPTE 259M (A &

Multiplexer

retimes

serial

digital

video

data

C) Serial Digital Video Standards

conforming to the SMPTE 292M and SMPTE 259M

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Supports 143 Mbps, 270 Mbps, 1.483 Gbps,

(A & C) standards. The LMH0056 operates at serial

and 1.485 Gbps Serial Data Rate Operation

data rates of 143 Mbps, 270 Mbps, 1.483 Gbps and

1.485

Gbps.

The

LMH0056

supports

DVB-ASI

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Supports DVB-ASI at 270 Mbps

operation at 270 Mbps. The LMH0056 includes an

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Single 3.3V Supply Operation

integrated 4:1 input multiplexer for selecting one of

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360 mW Typical Power Consumption

four input data streams for retiming.

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Integrated 4:1 Multiplexed Input

The LMH0056 automatically detects the incoming

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Two Differential, Reclocked Outputs

data rate and adjusts itself to retime the incoming

data to suppress accumulated jitter. The LMH0056

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Choice of Second Reclocked Output or Low-

recovers the serial data-rate clock and optionally

Jitter, Differential, Data-Rate Clock Output

provides it as an output. The LMH0056 has two

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Single 27 MHz External Crystal or Reference

differential serial data outputs; the second output may

Clock Input

be selected as a low-jitter, data-rate clock output.

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Manual Rate Select Input

Controls and indicators are: serial clock or second

serial data output select, manual rate select input,

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SD/HD Operating Rate Indicator Output

SD/HD rate indicator output, lock detect output,

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Lock Detect Indicator Output

auto/manual data bypass and output mute. The serial

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Output Mute Function for Data and Clock

data inputs, outputs, and serial data-rate clock

outputs are differential LVPECL compatible. The CML

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Auto/Manual Reclocker Bypass

serial data and serial data-rate clock outputs are

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Differential LVPECL Compatible Serial Data

suitable for driving 100

Ω differentially terminated

Inputs and Outputs

networks. The control logic inputs and outputs are

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LVCMOS Control Inputs and Indicator Outputs

LVCMOS compatible.

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48-Pin WQFN Package

The LMH0056 is powered from a single 3.3V supply.

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Industrial Temperature Range: -40°C to +85°C

Power dissipation is typically 360 mW. The device is

housed in a 48-pin WQFN package.

APPLICATIONS

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SDTV/HDTV Serial Digital Video Interfaces for:

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Digital Video Routers and Switchers

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Digital Video Processing and Editing

Equipment

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DVB-ASI Equipment

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Video Standards and Format Converters

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2

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PRODUCTION DATA information is current as of publication date.

Copyright © 2006–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.