DS3102GN2

Overview

The DS3102GN2 is a Stratum 2/3E/3 timing card IC with synchronous Ethernet support. It features one circuit in an 81-pin CSBGA (10x10mm) package. The device operates on a 1.62V to 1.98V supply within an industrial temperature range of -40°C to +85°C. It supports a maximum frequency of 312.5MHz and includes PLL functionality. Input interfaces include CMOS, LVDS, LVPECL, and TTL, while outputs provide the same signal formats. The input-to-output ratio is specified as 8:7.

Feature Summary

• Complies with GR-1244 Stratum 2–4, GR-253, G.812 Types I–IV, G.813, and G.8262 standards.
• Supports hitless reference switching upon loss of input clock.
• Features programmable PLL bandwidth ranging from 0.5mHz to 400Hz.
• Includes automatic or manual phase build-out capabilities.

Applications

• SONET/SDH Equipment Clocks (SECs)
• Synchronous Ethernet Equipment Clocks (EECs)
• Timing Card IC in WAN equipment including MSPPs, Ethernet switches, routers, DSLAMs, and wireless base stations

Procurement Notes

Verify the specific ordering suffix 'GN2' against official Microchip Technology documentation to confirm pinout and electrical characteristics match the standard DS3102GN variant. Ensure the component meets the required industrial temperature range (-40°C to +85°C) and voltage specifications (1.62V to 1.98V). Confirm package dimensions are consistent with the 81-LBGA CSBGA form factor.

Selection Notes

Select this component for telecom timing cards requiring Stratum 2, 3E, or 3 synchronization. It is suitable for applications needing synchronous Ethernet support and multiple input/output clock configurations. Verify that the system design accommodates the 1.8V core voltage and 3.3V I/O tolerance. Ensure the application requires the specific 8-input and 7-output clock architecture provided by this IC.

Part Context

The DS3102 is part of a family of timing ICs designed for telecommunications infrastructure. It serves as a replacement for Semtech’s ACS8522, though it utilizes a different package and pin arrangement. The device is manufactured by Maxim Integrated Products, which has been acquired by Analog Devices, but remains distributed under the Maxim brand in many contexts.

Replacement Considerations

The DS3102 is backward compatible with the Semtech ACS8522 register set, but physical pinouts differ. No direct public substitute part numbers are confirmed in the provided documentation.