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 360 mW typical power consumption Integrated 4:1 multiplexed input 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 48-Pin LLP package Industrial temperature range: -40°C to +85°C Description The LMH0056 HD/SD SDI Reclocker with 4:1 Input Multiplexer retimes serial digital video data conforming to the SMPTE 292M and SMPTE 259M (A & C) standards. The LMH0056 operates at serial data rates of 143 Mbps, 270 Mbps, 1.483 Gbps and 1.485 Gbps. The LMH0056 supports DVB-ASI operation at 270 Mbps. The LMH0056 includes an integrated 4:1 input multiplexer for selecting one of four input data streams for retiming. The LMH0056 automatically detects the incoming data rate and adjusts itself to retime the incoming data to suppress accumulated jitter. The LMH0056 recovers the serial data-rate clock and optionally provides it as an output. The LMH0056 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 LMH0056 is powered from a single 3.3V supply. Power dissipation is typically 360 mW. The device is housed in a 48-pin LLP 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

Typical Application

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

Datasheets

Title		Size	Date	Other Language
	LMH0056 HD/SD SDI Reclocker with 4:1 Input Multiplexer	327 Kbytes	12-Apr-07	日本語

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
	Broadcast Video Owner's Manual	Design Guide	2006-11-17

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LMH0056SQ/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$18.50 each at 1K+ pcs	reel of 250
LMH0056SQE/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$18.50 each at 1K+ pcs	reel of 250
LMH0056SQX/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$18.50 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 LMH0056.

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 LMH0056 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LMH0056SQ/NOPB	123.191	LLP	48	3	260	Detail	N/A	N/A	NS UZXYTTE# L056
LMH0056SQE/NOPB	123.191	LLP	48	3	260	Detail	N/A	N/A	NS UZXYTTE# L056
LMH0056SQX/NOPB	123.191	LLP	48	3	260	Detail	N/A	N/A	NS UZXYTTE# L056

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 LMH0056.

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 LMH0056 is located at RoHS Status.

CAD Symbols and Models N/A

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LMH0056SQ	BICMOS8B+	0	3632	0	0	2762292	2	783807897
LMH0056SQE	BICMOS8B+	0	3632	0	0	2762292	2	783807897
LMH0056SQX	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 LMH0056.

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 LMH0056 is located at RoHS Status.