DS26518

8-Port T1/E1/J1 Transceiver

Latest Generation of SCTs with the Industry's Highest Port Count

NOT RECOMMENDED FOR NEW DESIGNS

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Features

Eight Complete T1, E1, or J1 Long-Haul/Short-Haul Transceivers (LIU Plus Framer)
Independent T1, E1, or J1 Selections for Each Transceiver
Fully Internal Impedance Match, No External Resistor
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
Hitless Protection Switching
Crystal-Less Jitter Attenuators 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

Additional Details

The DS26518 is an 8-port framer and line interface unit (LIU) combination for T1, E1, J1 applications. Each port is independently configurable, supporting both long-haul and short-haul lines. The DS26518 Single-Chip Transceiver (SCT) is software and pinout compatible with the 4-port DS26514. It is nearly software compatible with the DS26528 and its derivatives.

Applications