(China (Mainland))
Product Summary
The LXT400PE is a Switched 56/DDS Transceiver. It is an integrated line interface circuit for Switched 56 (SW 56) and Digital Data Service (DDS), compatible with any combination of 19 to 26 AWG cable. The LXT400PE operates at any of 17 preset data rates from 2.4 kbps to 72.0 kbps, providing appropriate transmit pulse shaping, receive signal detection and timing recovery at the metallic interface between the carrier and the customer installation. The LXT400PE offers a variety of diagnostic features including loopback, line status and equalizer monitor outputs, while conforming to AT&T, ANSI and Bellcore specifications.
Parametrics
LXT400PE absolute maximum ratings: (1)Input Voltage, any pin:AGND - 0.3 to AVCC + 0.3 V; (2)Input or output diode current, any pin:±20 mA; (3)Continuous output current, any pin:±25 mA; (4)Continuous current, VCC or GND pins:±60 mA; (5)Storage Temperature:-40 to ±150℃.
Features
LXT400PE features: (1)Enhancements: Three new data rates: 38.4, 51.2, and 64.0 kbps, Improved accuracy in line attenuation reporting, Simplified transmit digital timing; (2)Integrated transmitter, receiver and timing recovery on a single CMOS chip; (3)Transparent to framing and coding; (4)Receive equalizer filters allow data recovery from signals with up to 40 dB of attenuation at the Nyquist frequency at line rates below 56 kbps, and up to 49 dB at the 56, 64 and 72 kbps line rates; (5)Single 4.096 MHz crystal or master clock input; (6)Digital back-end loopback (CSU Loopback); (7)Equalizer output monitor pin; (8)Line status (loop length, RLOS, etc.) information available for maintenance purposes; (9)Low power consumption (200 mW typical); (10)Available in 28-pin plastic DIP and PLCC; (11)Single 5 V only CMOS technology.
Diagrams
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 LXT441 |
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Data Sheet |
Negotiable |
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