LXT334 Datasheet, PDF (1/24 Pages) Level One – Quad Short Haul Transceiver with Clock Recovery

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• Fully integrated quad, short-haul PCM transceiver for
G.703 2.048 Mbps or I.431 1.544 Mbps operation
• Single rail supply voltage of 5 V (typical)
• Low power consumption of 410 mW (typical)
‡ Programmable G.703 transmit pulse shaping for
G.703 75 Ω and 120 Ω and I.431 100 Ω systems
• High performance line drivers with constant low
impedance for 20 dB return loss (typical)
exceeds ETSI 300 166
• On-chip band gap voltage reference for stabilized,
constant output amplitude
• High-performance receivers recover data with up to
12 dB cable attenuation
• Low frequency 1.544 or 2.048 MHz reference clock
• On-chip clock recovery function
• Programmable unipolar and bipolar PCM interface
• On-chip AMI and HDB3 encoder/decoder
• On-chip Driver Failure Monitoring circuit
• Local and remote loopback testing function
• Independent Loss of Signal processor for each chan-
nel conforms to ITU G.775 recommendation
• Small-footprint 64-pin QFP
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