Analog Devices Inc./Maxim Integrated DS34S104GN+

DS34S104 is the four-port member of the DS34S101/102/104/108 family. It maps TDM services into packet-network streams and reconstructs them at the receiving side. The family supports E1/T1 serial streams and one E3/T3/STS-1 stream, with configurable bundles, packet encapsulation, clock recovery, and host management. Select the exact port configuration and operating mode using the manufacturer's data sheet, not a generic family description.

The original LCDChip API record names 256-BGA. The manufacturer's exact DS34S104GN+ ordering row says 256 TECSBGA. The package registry maps the generic 256-BGA name to /upload/package/256-BGA.jpg, but that JPG is absent locally and returns HTTP 404 on the production site. The missing generic image cannot establish ball pitch, body size, land pattern, or mechanical interchangeability; use the manufacturer's package drawing and ball map before layout.

Layout checks

• Verify the 256-ball TECSBGA outline and ball-A1 orientation.
• Use the manufacturer's ball map for power, TDM, Ethernet, SDRAM, and host buses.
• Review 1.8 V core and 3.3 V I/O supply domains.

The data sheet groups package balls by function; signal names below are not ball-location assignments. Check the manufacturer's 256-ball map for coordinates and multiplexing.

Configure operating modes and electrical limits from the manufacturer's tables; family capabilities are not all simultaneous operating modes.

No drop-in substitute is established. DS34S101 and DS34S102 are one- and two-port family members; DS34S108 is an eight-port member with a different package option. A candidate must be compared for port count, service encapsulation, clock recovery, Ethernet/SDRAM/host interfaces, supply domains, software configuration, and the exact 256 TECSBGA ball map. No unverified internal alternative is linked.

Analog Devices publishes the legacy Maxim Integrated DS34S101-DS34S108 data sheet and the DS34S104 product page. The product page identifies DS34S104 as not recommended for new designs. Consult the latest controlled documentation and manufacturer support for availability and design-in decisions.

Verify the exact DS34S104GN+ marking, traceability, 256-ball package geometry, and environmental suffix against manufacturer documentation. Review the package drawing and device revision before acceptance. A generic or missing package JPG is not an authenticity test.

Before board release, validate packet mode, jitter and timing budget, clock recovery, SDRAM and Ethernet interfaces, supply sequencing, and the exact package ball map from the Analog Devices data sheet. The production package image is missing. Do not publish this draft until the image is available and the rendered page and all validation gates pass.