Features: • Fully integrated quad, short-haul PCM transceivers for E1 applications.• On Chip Receive Equalizer and Transmit Pulse Shaper for CEPT 75W and 120W line terminations• On chip clock recovery circuit• Transformer or capacitor coupled receiver inputs• Crystal-...
XRT82L24A: Features: • Fully integrated quad, short-haul PCM transceivers for E1 applications.• On Chip Receive Equalizer and Transmit Pulse Shaper for CEPT 75W and 120W line terminations• On...
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Specifications | |
No. ofCH | 4 |
DataRate(s) | E1 |
Clk Rec | Yes |
SH/LH | S |
Temp.Range | Ind. |
OpPwr Sup/Max Cur | 3.3V ±5%, 228mA |
Pkgs | TQFP-100 |
Storage Temperature | -65 to + 150 |
Operating Temperature | -40 to + 85 |
Supply Voltage | -0.5V to + 6.0V |
Theta-JA | 38/W |
Theta-JC | 6/W |
Demand for greater transmission capacity has propelled telecommunications, and networking system companies to develop more E1 (2.048 Mbps) solutions. As more companies standardize on Wide Area Network (WAN) based, XRT82L24A E1 transmission rates, or higher, companies are increasingly seeking off-the-shelf industry-proven components. Exar's four-channel LIU and Framer are ideally suited for this growing E1 market.
These XRT82L24A devices are primarily targeted at single-channel and multi-channel E1 applications, such as telecommunications equipment, network multiplexers, central office switches and digital cross connects. In instances where clock recovery and jitter attenuation functions have moved from the ASIC to the transceiver, these new four-channel parts are ideal.
The XRT82L24A is a fully-integrated, four-channel, short-haul line interface transceiver for 75Ω or 120Ω applications. Each channel consists of a receiver, and a transmitter which accepts a single, or dual-rail digital input for signal transmission. It also includes a crystal-less jitter attenuator which can be selected in the transmit, or receive path through the host, or hardware mode.
In addition, the XRT82L24A device has high immunity to receiver interference, a per-channel transmit power shut-down capability, and meets or exceeds industry specifications: ITU G.703, G. 775, G.736 and G.823, and ETSI 300-166.
The XRT82L24A is a fully integrated Quad (four channels) short-haul line interface unit for E1(2.048Mbps) 75W or 120W applications. Each channel consists of a receiver with equalizer for reliable data and clock recovery, and a transmitter which accepts either single or dual-rail digital inputs for signal transmission to the line using a low output impedance line driver. The device also includes a crystal-less jitter attenuator which, depending on system requirements, can be selected in the receive or transmit path through the Host or Hardware Mode control.
XRT82L24A is a low power CMOS device operating on a single 3.3V supply with 5V tolerant digital inputs.