Analog Devices Inc./Maxim Integrated DS3184

Each DS3184 port combines cell/packet processing, a DS3/E3 framer/formatter and an analog line interface unit. The device maps and demaps ATM cells or HDLC packets between a selectable system-side interface and as many as four copper lines. Ports are independently configurable for supported framing and traffic modes, enabling mixed-service equipment designs.

Maxim's ordering table specifies a 400-ball TE-PBGA, 27 mm × 27 mm, with 1.27 mm pitch for DS3184. LCDChip records 400-BBGA; the established package register maps that catalog name to 400-BBGA.jpg. Verify the manufacturer's ball map, thermal-ground connections and exact assembly drawing instead of treating the generic catalog name as a footprint specification.

Mechanical checks

• Confirm 27 mm body, 1.27 mm pitch and ball A1 orientation.
• Match all analog and digital balls to the original PCB.
• Review thermal-ground, moisture and reflow requirements.

The registered JPG is absent locally and returns HTTP 404 on the production site. It must be restored and checked before publication.

These signal groups summarize the manufacturer architecture, not a ball-level pinout. The exact 400-ball table governs routing and multiplexed functions.

Use the Rev. 3 data sheet and device errata for electrical ratings, transformer choices, line-side performance, clocking and detailed timing.

DS3181, DS3182 and DS3183 are one-, two- and three-port family members. Family pin compatibility does not guarantee that a lower-port device will serve a four-port board. DS3164 is a related four-port PHY/framer without the same built-in LIU arrangement, so it is not a direct functional replacement. Compare analog line circuitry, enabled ports, bus configuration, firmware register map, clocks, pin assignments and revision-specific errata. The DS3184N has a different temperature range.

No internal alternative-product link is asserted without an exact LCDChip API match and engineering verification.

Analog Devices hosts Maxim's DS3181–DS3184 Rev. 3 family data sheet and the DS3184 product page. The documentation identifies the exact quad-port function, integrated LIUs, ordering temperature, TE-PBGA package and related errata. Use the manufacturer's line-interface layout guidance for any new or repaired PCB.

Check the exact DS3184 marking rather than DS3184N or another family member, plus lot traceability, package condition, revision and moisture-sensitive handling. Validate line-side behavior and the board's installed configuration. A missing catalog image does not authenticate the device or demonstrate mechanical fit.

Validate the 75-ohm copper-line network, transformers, transmit waveshaping, receive recovery, jitter/clock configuration, bus timing, four-port firmware and TE-PBGA thermal-ground scheme against the complete data sheet and revision errata. Restore and verify the production 400-BBGA JPG before publication.