DS21352G

Telecom Overview

The DS21352G is a T1 single-chip transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a 3.3V supply and integrates a line interface unit, framer, HDLC controllers, and a TDM backplane interface. The device supports data rates of 1.544 Mb/s for T1 applications. It features a crystal-less jitter attenuator selectable to 32 or 128 bits, dual two-frame elastic store slip buffers connecting to asynchronous backplanes up to 8.192MHz, and an interleaving PCM bus operation. The component is housed in a 100-pin LQFP package measuring 14 mm x 14 mm.

Telecom Feature Summary

• Integrates complete DS1/ISDN-PRI/J1 transceiver functionality with long and short haul line interface units.
• Includes an integral HDLC controller with 64-byte buffers configurable for FDL or DS0 operation.
• Supports IEEE 1149.1 JTAG-Boundary Scan architecture for test access.
• Features dual two-frame elastic store slip buffers capable of connecting to asynchronous backplanes.

Telecom Applications

• T1 Line Cards
• Switches and Routers
• Add-Drop Multiplexers

Telecom Procurement Notes

Verify the specific suffix 'G' against official manufacturer documentation, as standard listings typically utilize 'L' or 'LN' designators for temperature ranges. Confirm current availability status directly with authorized distributors, as this component may be subject to discontinuation or limited stock conditions.

Telecom Selection Notes

Select the DS21352G when a 3.3V supply voltage is required for T1 transmission. Ensure compatibility with Intel or Motorola 8-bit parallel control ports. Verify that the 100-pin LQFP package dimensions fit the target PCB layout constraints and thermal requirements.

Telecom Part Context

The DS21352G belongs to the DS21352/DS21552 family, which are superset versions of the DS2152 T1 single-chip transceiver. This family retains original DS2152 features while adding support for interleaving PCM bus operations, enhanced HDLC controllers, and JTAG boundary scan capabilities.

Telecom Replacement Considerations

The DS21352 is pin compatible with the DS2152, DS2154, DS21554, and DS21Q354 SCTs. Software created for these devices is transferable to the DS21352/552 with minimal hardware modifications.