Dallas DS2187S+

Линейный интерфейс приемаT14,75 В ~ 5,25 В

Overview

The DS2187S T1/CEPT Receive Line Interface chip interfaces user equipment to North American (T1 1.544 MHz) and European (CEPT 2.048 MHz) primary rate communication networks. The device extracts clock and data from twisted pair or coax transmission media and eliminates expensive discrete components and/or manual tuning required in existing T1 and CEPT line termination electronics. 

FEATURES Line interface for T1 (1.544 MHz) and CEPT (2.048 MHz) primary rate networks Extracts clock and data from twisted pair or coax Meets requirements of PUB 43801, TR 62411, and applicable CCITT G.823 Precision on-chip PLL eliminates external crystal or LC tank - no tuning required Decodes AMI, B8ZS, and HDB3 coded signals Designed for short loop applications such as terminal equipment to DSX-1 Reports alarm and error events Compatible with the DS2180A T1/ISDN Primary Rate and DS2181A CEPT Transceivers, as well as DS2141A T1 and DS2143 E1 Controllers Companion to the DS2186 T1/CEPT Transmit Line Interface and DS2188 T1/CEPT Jitter Attenuator Single 5V supply; low-power CMOS technology

Features

Applications

• Channel Service Units (CSUs): T1/E1/J1
• Fractional T1/E1/J1
• BITS Timing
• Digital Access Cross-connect System (DACs)
• Digital Cross-connect Systems (DCS)
• Frame Relay Switches and Access Devices (FRADS)
• ISDN Primary Rate Interfaces (PRA)
• PBXs channel bank
• PCM channel bank
• T3 channelized access concentrators