LMH0346

www.ti.com

SNLS248J – APRIL 2007 – REVISED APRIL 2013

3 Gbps HD/SD SDI Reclocker with Dual Differential Outputs

Check for Samples: LMH0346

1

FEATURES

DESCRIPTION

The LMH0346 3 Gbps HD/SD SDI Reclocker retimes

2

•

Supports SMPTE 424M, SMPTE 292M, and

serial digital video data conforming to the SMPTE

SMPTE 259M (C) Serial Digital Video

424M,

SMPTE

292M,

and

SMPTE

259M

(C)

Standards

standards. The LMH0346 operates at serial data

•

Supports 270 Mbps, 1.483 Gbps, 1.485 Gbps,

rates of 270 Mbps, 1.483 Gbps, 1.485 Gbps, 2.967

2.967 Gbps, and 2.97 Gbps Serial Data Rate

Gbps, and 2.97 Gbps. The LMH0346 supports DVB-

Operation

ASI operation at 270 Mbps.

•

Supports DVB-ASI at 270 Mbps

The LMH0346 automatically detects the incoming

•

Single 3.3V Supply Operation

data rate and adjusts itself to retime the incoming

data to suppress accumulated jitter. The LMH0346

•

370 mW Typical Power Consumption

recovers the serial data-rate clock and optionally

•

Two Differential, Reclocked Outputs

provides it as an output. The LMH0346 has two

•

Choice of Second Reclocked Output or Low-

differential serial data outputs; the second output may

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

Jitter, Differential, Data-Rate Clock Output

Controls and indicators are: serial clock or second

•

Single 27 MHz External Crystal or Reference

serial data output select, manual rate select input,

Clock Input

SD/HD rate indicator output, lock detect output,

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Manual or Automatic Rate Select Input

auto/manual data bypass and output mute. The serial

data inputs, outputs, and serial clock outputs are

•

SD/HD Operating Rate Indicator Output

differential LVPECL compatible. The CML serial data

•

Lock Detect Indicator Output

and serial clock outputs are suitable for driving 100

Ω

•

Output Mute Function for Data and Clock

differentially terminated networks. The control logic

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Auto/Manual Reclocker Bypass

inputs and outputs are LVCMOS compatible.

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Differential LVPECL Compatible Serial Data

The LMH0346 is powered from a single 3.3V supply.

Inputs and Outputs

Power dissipation is typically 370 mW.

•

LVCMOS Control Inputs and Indicator Outputs

The

device

is

available

in

two

space-saving

•

20-Pin HTSSOP or 24-Pin WQFN Package

packages: a 6.5 X 4.4 mm 20-pin HTSSOP and an

even more space–efficient 5 X 4 mm 24-pin WQFN

•

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

package.

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Footprint Compatible With the LMH0046 and

LMH0026 (HTSSOP Package)

APPLICATIONS

•

SDTV/HDTV and 3 Gbps Serial Digital Video

Interfaces for:

–

Digital Video Routers and Switchers

–

Digital Video Processing and Editing

Equipment

–

DVB-ASI Equipment

–

Video Standards and Format Converters

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2007–2013, 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.