Features Supports SMPTE 292M and SMPTE 259M (A & C) serial digital video standards Supports 143 Mbps, 270 Mbps, 1.483 Gbps, and 1.485 Gbps 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 Manual rate select input SD/HD operating rate indicator output 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 e-TSSOP package Industrial temperature range: -40°C to +85°C Description The LMH0046 HD/SD SDI Reclocker retimes serial digital video data conforming to the SMPTE 292M and SMPTE 259M (A & C) standards. The LMH0046 operates at serial data rates of 143 Mbps, 270 Mbps, 1.483 Gbps and 1.485 Gbps. The LMH0046 supports DVB-ASI operation at 270 Mbps. The LMH0046 automatically detects the incoming data rate and adjusts itself to retime the incoming data to suppress accumulated jitter. The LMH0046 recovers the serial data-rate clock and optionally provides it as an output. The LMH0046 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, manual rate select input, SD/HD rate 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 LMH0046 is powered from a single 3.3V supply. Power dissipation is typically 330 mW. The device is housed in a 20-pin e-TSSOP package. Applications SDTV/HDTV serial digital video interfaces for: Digital video routers and switchers Digital video processing and editing equipment DVB-ASI equipment Video standards and format converters

Also Recommended LMH0002▲ HD/SD SDI Cable Driver (offerred In 8-SOIC And 16-LLP) LMH0034▲ HD/SD Adaptive Cable Equalizer (16 Pin SOIC) LMH0044▲ HD/SD Adaptive Cable Equalizer In 16-LLP Package LMH0056▲ HD/SD SDI Reclocker With 4:1 Input MUX LMH0202▲ Dual HD/SD Cable Driver Application Circuit

Typical Application *click for larger image Application Circuit	Block Diagram *click for larger image

Parameters / Values	LMH0046	LMH0002	LMH0034	LMH0044	LMH0056	LMH0202
Max Data Rate	1485 Mbps	1485 Mbps	1485 Mbps	1485 Mbps	1485 Mbps	1485 Mbps
SupplyVoltage	3.3 Volt	3.3 Volt	3.3 Volt	3.3 Volt	3.3 Volt	3.3 Volt
OtherSupply Voltage	Undefined	Undefined	Undefined	Undefined	Undefined	Undefined
Output Jitter	0.02 UI				0.02 UI
4:1 Input Mux	No				Yes
Dual Differential Outputs	Yes				Yes
Power Consumption_	330 mW	149 mW	208 mW	208 mW	360 mW	298 mW
Rise/Fall Times	90 ps	120 ps	100 ps	100 ps	90 ps	120 ps
Temperature Min	-40 deg C	-40 deg C	0 deg C	0 deg C	-40 deg C	0 deg C
Temperature Max	85 deg C	85 deg C	85 deg C	85 deg C	85 deg C	70 deg C
Supply Current	100 mA	45 mA	63 mA	63 mA	109 mA	90 mA
OtherSupply Current	Undefined				Undefined
Output Swing	0.8 Volt	0.8 Volt	0.75 Volt	0.75 Volt	0.8 Volt	0.8 Volt
Function	Reclocker	Cable Driver	Equalizer	Equalizer	Reclocker	Cable Driver

Datasheets

Title		Size	Date	Other Language
	LMH0046 HD/SD SDI Reclocker with Dual Differential Outputs	843 Kbytes	9-Apr-07

Application Notes

Title		Size	Date	Other Language
	AN-1943: Application Note 1943 Understanding Serial Digital Video Bit Rates	191 Kbytes	22-Apr-09
	AN-2145: Application Note 2145 Power Considerations for SDI Products	558 Kbytes	24-Aug-11
	AN-2146: Application Note 2146 Power Design for SDI and other Noise Sensitive Devices	516 Kbytes	9-Aug-11

Other Technical Documents

Title		Type	Date
	Reference Clock Loop Through Application	App Note	2009-01-16
	Timing is Everything – The Broadcast Video Signal Path	Signal Path Designer	2007-08-02
	Broadcast Video Owner's Manual	Design Guide	2006-11-17

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LMH0046MH/NOPB LMH0046MH RoHS Status	TSSOP EXP PAD	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 6 DIGI-KEY Worldwide 164 FARNELL Europe and Asia 63 KEIKONG Asia Pacific 292 MOUSER Worldwide 73 NEWARK Americas 63 TAYLOR Americas 6	$17.00 each at 1K+ pcs	rail of 73
LMH0046MHX/NOPB LMH0046MHX RoHS Status	TSSOP EXP PAD	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$17.00 each at 1K+ pcs	reel of 2500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LMH0046.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LMH0046 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
SD046EVK	HD/SD SDI Reclocker with Dual Differential Outputs	Preliminary	Distributor Region Qty DIGI-KEY Worldwide 0 MOUSER Worldwide 1	$200.00 each	1

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LMH0046MH/NOPB LMH0046MH	73.06 73.591	TSSOP EXP PAD	20	3 3	260 260	Detail	Download	N/A	NSUZXYTT L046
LMH0046MHX/NOPB LMH0046MHX	73.06 73.591	TSSOP EXP PAD	20	3 3	260 260	Detail	Download	N/A	NSUZXYTT L046

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LMH0046.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LMH0046 is located at RoHS Status.

CAD Symbols and Models Download LMH0046 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LMH0046MH	BICMOS8B+	0	3632	0	0	2762292	2	783807897
LMH0046MHX	BICMOS8B+	0	3632	0	0	2762292	2	783807897

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LMH0046.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LMH0046 is located at RoHS Status.