MC740-430E

NEL MD-01-4-43-75-482 May 8, 2002 Preliminary MC740-430E 47-Gb/s 4:1 Multiplexer The MC740-430E is an engineering sample of 47-Gb/s signal generator. It consists of a 4:1 multiplexer (MUX), D-type flipflop (D-FF), and clock distribution unit based on 0.1-µm InP-HEMT devices. Four-parallel data inputs are multiplexed to 47-Gb/s data by using 47- and 11.75-GHz clock signals. At the output stage, the D-FF regenerates the muliplexed data with the 47-GHz clock signal and offers symmetrical eye openings. The MC740-430E has SCFL (Source Coupled FET Logic) I/O and can be directly connected to a pulse pattern generator. FEATURES Operating range: 38 to 47 Gb/s (min.) (note) Signal regeneration with full-rate clock signal Large output amplitude: SCFL I/O (VOHD = 0V, VOLD = -0.9V, typ.) Single power supply voltage: DC -6 V (note) 50-Gb/s operation is optional. APPLICATIONS Parallel-to-serial converters, Test equipments FUNCTION DIAGRAM 20Gb/s (mon.) 2 40Gb/s (mon.) DATA 3, 2, 1, 0 4 10-dB ATT Latching stage 75 Ω 50 Ω D-FF 75 Ω DATA DATA CLK10 50 Ω 4:1 MUX 75 Ω φshifter 50 Ω CLK40 CLK40 CLK10 2 Clock Distributor 65 Ω 50 Ω Fig. 1. Function diagram. -1- NEL TIMING CHARTS MC740-430E (1) Data and Clock Input Signals DATA3 D30 D31 DATA2 D20 D21 DATA1 D10 D11 DATA0 D00 D01 CLK10 (2) Multiplexed 20 Gb/s Data Output Signals (Monitor) 20 Gb/s Odd ch. D30 D10 D31 D11 20 Gb/s Even ch. D20 D00 D21 D01 (3) Multiplexed 40 Gb/s Data Output Signals 40 Gb/s (4:1 MU...