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 100 T1 Twisted Pair, 110 J1 Twisted Pair, 120 E1 Twisted Pair, and 75 E1 Coaxial Applications
` Hitless Protection Switching
` Crystal-Less Jitter Attenuators Can Be Selected for Transmit or Receive Path; Jitter Attenuator eets 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 lock 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
ApplicationRouters
Channel Service Units (CSUs)
Data Service Units (DSUs)
Muxes
Switches
Channel Banks
T1/E1 Test EquipmentSpecificationsVoltage Range on Any Lead with Respect to VSS (except VDD).......-0.3V to +5.5V
Supply Voltage (VDD) Range with Respect to VSS..............-0.3V to +3.63V
Operating Temperature Range
Commercial (DS26518G).................... .....0°C to +70°C
Industrial (DS26518GN)...........................-40°C to +85°C
Storage Temperature Range........................-55°C to +125°C
Soldering Temperature...............See IPC/JEDEC J-STD-020 Specification
This is a stress rating only and functional operation of the device at these or any other conditions bove those indicated in the operation sections of this specification is not implied. Exposure to absolute aximum rating conditions for extended periods of time may affect reliability.
DescriptionThe DS26518 is a single-chip 8-port framer and line interface unit (LIU) combination for T1, E1, and J1 applications. Each port is independently configurable, supporting both long-haul and short-haul lines. The 8-port SCT is software compatible with the DS26519 and nearly software compatible with the DS26528 and its derivatives.
DS26518 Data Sheet
