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Maxim > Products > [T/E Carrier and Packetized Communications] 
DS2181A
CEPT Primary Rate Transceiver


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 392kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The DS2181A is designed for use in CEPT networks and supports all logical requirements of CCITT Red Book recommendations G.704, G.706, and G.732. The transmit side generates framing patterns and CRC4 codes, formats outgoing channel and signaling data, and produces network alarm codes when enabled. The receive side decodes the incoming data and establishes frame, CAS multiframe, and CRC4 multiframe alignments. Once synchronized, the device extracts channel, signaling, and alarm data.

A serial port allows access to 14 on-chip control and status registers in the processor mode. In this mode, a host processor controls features such as error logging, per-channel code manipulation, and alteration of the receive synchronizer algorithm.

The hardware mode is intended for preliminary system prototyping and/or retrofitting into existing systems. This mode requires no host processor and disables special features available in the processor mode.

Key Features
  • Single-chip primary-rate transceiver meets CCITT standards G.704, G.706 and G.732
  • Supports new CRC4-based framing standards and CAS and CCS signaling standards
  • Simple serial interface used for device configuration and control in processor mode
  • Hardware mode requires no host processor; intended for standalone applications
  • Comprehensive on-chip alarm generation, alarm detection, and error logging logic
  • Shares footprint with DS2180A T1 transceiver
  • Comparison to DS2175 T1/CEPT elastic store, DS2186 transmit line interface, DS2187 receive line interface, and DS2188 jitter attenuator
  • 5V supply; low-power CMOS technology

Diagram
DS2181A: Block Diagram
Block Diagram

Reliability Reports
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    Software/Models
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    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-11 of 11

    DS2181A Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    DS2181A  
    		Active PDIP(W);40 pin;836.5 mm²
    Outline Drawing: 21-0044 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P40-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS2181A+  
    		Active PDIP(W);40 pin;836.5 mm²
    Outline Drawing: 21-0044 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P40+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS2181AN    
    		Active PDIP(W);40 pin;835.7 mm²
    Outline Drawing: 21-0044 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P40-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS2181AQ  
    		Active PLCC;44 pin;311.5 mm²
    Outline Drawing: 21-0049 (PDF)
    Land Pattern: 90-0236 (PDF)
    Use pkgcode/variation: Q44-7*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS2181AQ/T&R    
    		Active PLCC;44 pin;311.5 mm²
    Outline Drawing: 21-0049 (PDF)
    Land Pattern: 90-0236 (PDF)
    Use pkgcode/variation: Q44-7*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    DS2181AQ+  
    		Active PLCC;44 pin;311.5 mm²
    Outline Drawing: 21-0049 (PDF)
    Land Pattern: 90-0236 (PDF)
    Use pkgcode/variation: Q44+7*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS2181AQ+T&R    
    		Active PLCC;44 pin;311.5 mm²
    Outline Drawing: 21-0049 (PDF)
    Land Pattern: 90-0236 (PDF)
    Use pkgcode/variation: Q44+7*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS2181AQN  
    		Active PLCC;44 pin;311.5 mm²
    Outline Drawing: 21-0049 (PDF)
    Land Pattern: 90-0236 (PDF)
    Use pkgcode/variation: Q44-7*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS2181AQN/T&R    
    		Active PLCC;44 pin;311.5 mm²
    Outline Drawing: 21-0049 (PDF)
    Land Pattern: 90-0236 (PDF)
    Use pkgcode/variation: Q44-7*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS2181AQN+  
    		Active PLCC;44 pin;311.5 mm²
    Outline Drawing: 21-0049 (PDF)
    Land Pattern: 90-0236 (PDF)
    Use pkgcode/variation: Q44+7*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS2181AQN+T&R    
    		Active PLCC;44 pin;311.5 mm²
    Outline Drawing: 21-0049 (PDF)
    Land Pattern: 90-0236 (PDF)
    Use pkgcode/variation: Q44+7*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

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    1999-11-20
    This page last modified: 2009-10-22


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