Update: 30 September, 2023
LMH0346 3 Gbps HD/SD SDI Reclocker is a chip that can re-time digital video data. It conforms to the SMPTE 424M, SMPTE 292M, and SMPTE 259M (C) standards. The chip operates at data rates of 270 Mbps, 1.483 Gbps, 1.485 Gbps, 2.967 Gbps, and 2.97 Gbps. LMH0346 supports DVB-ASI operation at 270 Mbps. LMH0346 automatically detects the incoming data rate and adjusts itself to retime the incoming data to suppress accumulated jitter. LMH0346 also recovers the serial data-rate clock and optionally provides it as an output. LMH0346 has two differential serial data outputs, the second output can 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 clock outputs are differential LVPECL compatible. The CML serial data and serial clock outputs are suitable for driving 100 Ω differentially terminated networks. The control logic inputs and outputs are LVCMOS compatible. LMH0346 is powered from a single 3.3V supply. Typical power dissipation is 370 mW. The device is available in two space–saving packages: a 6.5 X 4.4 mm 20-pin e-TSSOP and an even more space–efficient 5 X 4 mm 24-pin LLP package.
File format: PDF
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MD5 Checksum: 9C144CDB58876B6637CFBF947CA5BCDC
Publication date: 03 May, 2012
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PDF Link: NATIONAL SEMICONDUCTOR LMH0346 3 Gbps HD/SD SDI Reclocker with Dual Differential Outputs Manual PDF