MAXIM DS26524GA4

The DS26524 is a single-chip 4-port framer and line interface unit (LIU) combination for T1, E1, and J1 applications. Each channel is independently configurable, supporting both long-haul and short-haul lines.

• Four Complete T1, E1, or J1 Long-Haul/ShortHaul Transceivers (LIU plus Framer)
• Independent T1, E1, or J1 Selections for Each Transceiver
• Internal Software-Selectable Transmit- and Receive-Side Termination for 100Ω T1 Twisted Pair, 110Ω J1 Twisted Pair, 120Ω E1 Twisted Pair, and 75Ω E1 Coaxial Applications
• Crystal-Less Jitter Attenuator can be Selected for Transmit or Receive Path; Jitter Attenuator Meets ETS CTR 12/13, ITU-T G.736, G.742, G.823, and AT&T Pub 62411
• External Master Clock can be Multiple of 2.048MHz or 1.544MHz for T1/J1 or E1 Operation; This Clock is Internally Adapted for T1 or E1 Usage in the Host Mode
• Receive-Signal Level Indication from -2.5dB to -36dB in T1 Mode and -2.5dB to -44dB in E1 Mode in Approximate 2.5dB Increments
• Transmit Open- and Short-Circuit Detection
• LIU LOS in Accordance with G.775, ETS 300 233, and T1.231
• Transmit Synchronizer
• Flexible Signaling Extraction and Insertion Using Either the System Interface or Microprocessor Port
• Alarm Detection and Insertion
• T1 Framing Formats of D4, SLC-96, and ESF
• J1 Support
• E1 G.704 and CRC-4 Multiframe
• T1-to-E1 Conversion

• Routers
• Channel Service Units (CSUs)
• Data Service Units (DSUs)
• Muxes
• Switches
• Channel Banks
• T1/E1 Test Equipment