MAX3747BEUB+TCBK

Overview

The MAX3747BEUB+TCBK is a multirate limiting amplifier IC manufactured by Analog Devices Inc./Maxim Integrated. It operates within a temperature range of -40°C to +85°C and utilizes a 10-pin µMAX package. The device functions as a data quantizer for optical receivers, supporting data rates from 155Mbps to 3.2Gbps. It provides greater than 57dB of gain with a supply current of approximately 18mA excluding output current. The unit features PECL-compatible inputs and delivers an 800mV P-P CML differential output voltage.

Feature Summary

• Pin-for-pin compatible with Micrel SY88993V
• Programmable loss-of-signal detect with chatter-free operation
• Optional disable function for squelch implementation
• Enhanced LOS operation under overload conditions

Applications

• Gigabit Ethernet SFP/SFF Optical Transceiver Modules
• 1G/2G Fibre-Channel SFP/SFF Optical Transceiver Modules
• Multirate OC-3 to OC-48 FEC SFP/SFF Optical Transceiver Modules
• 10G LX4 Transceiver Modules

Procurement Notes

Verify the specific suffix TCBK against official manufacturer documentation to confirm tape-and-reel packaging or lot traceability details. Confirm RoHS compliance status via the datasheet revision history. Ensure the component matches the 10-pin µMAX physical footprint and electrical specifications before integration into designs requiring pin compatibility with legacy SY88993V circuits.

Selection Notes

Select this component when designing optical receiver front-ends for SONET, Fibre-Channel, or Gigabit Ethernet applications. The MAX3747B variant is preferred over the A version if enhanced Loss-of-Signal performance under input overload conditions is required. Verify that the system power supply noise rejection meets the design requirements for high-gain amplification stages.

Part Context

This part belongs to the MAX3747A/MAX3747B family of low-power SFP limiting amplifiers designed for small form-factor transceivers. The 'B' designation indicates specific enhancements in signal detection logic compared to the 'A' variant. Both variants share identical pinouts and core amplification characteristics, facilitating direct substitution in existing hardware architectures.

Replacement Considerations

The MAX3747AEUB+ serves as a functional substitute within the same family, though it lacks the enhanced overload LOS characteristics of the B variant.