MAX3268

19-1523; Rev 7, 2/06 +3.0V to +5.5V, 1.25Gbps/2.5Gbps Limiting Amplifiers MAX3264/MAX3265/MAX3268/MAX3269/MAX3765/MAX3768 General Description The 1.25Gbps MAX3264/MAX3268/MAX3768 and the 2.5Gbps MAX3265/MAX3269/MAX3765 limiting amplifiers are designed for Gigabit Ethernet and Fibre Channel optical receiver systems. The amplifiers accept a wide range of input voltages and provide constantlevel output voltages with controlled edge speeds. Additional features include RMS power detectors with programmable loss-of-signal (LOS) indication, an optional squelch function that mutes the data output signal when the input voltage falls below a programmable threshold, and excellent jitter performance. The MAX3264/MAX3265/MAX3765 feature current-mode logic (CML) data outputs that are tolerant of inductive connectors and a 16-pin TSSOP package, making these circuits ideal for GBIC receivers. The MAX3268/ MAX3269/MAX3768 feature standards-compliant positive-referenced emitter-coupled logic (PECL) data outputs and are available in a tiny 10-pin µMAX package that is ideal for small-form-factor (SFF) receivers. Features ♦ +3.0V to +5.5V Supply Voltage ♦ Low Deterministic Jitter 14ps (MAX3264) 11ps (MAX3265/MAX3765) ♦ 150ps (max) Edge Speed (MAX3265/MAX3765) 300ps (max) Edge Speed (MAX3264) ♦ Programmable Signal-Detect Function ♦ Choice of CML or PECL Output Interface ♦ 10-Pin µMAX or 16-Pin TSSOP Package Ordering Information PART MAX3264CUE MAX3264CUE+ MAX3264C/D MAX3265CUE MAX3265CUE+ MAX32...