LXT312A/LXT315A
Low Power T1 PCM Repeaters/Transceivers
Datasheet
This data sheet also applies to the LXT312/LXT315 products.
The LXT312A and LXT315A are integrated repeater/transceiver circuits for T1 carrier systems.
The LXT312A is a dual repeater/transceiver and the LXT315A is a single repeater/transceiver.
The LXT312A and LXT315A are designed to operate as regenerative repeaters/transceivers for
1.544 Mbps data rate PCM lines. Each includes all circuits required for a regenerative repeater/
transceiver system including the equalization network, automatic line build-out (ALBO), and a
state-of-the-art analog/digital clock extraction network tuned by an external crystal.
The key feature of the LXT312A family is that it requires only a crystal and a minimum of other
components to complete a repeater/transceiver design. Compared with traditional tuned coil-
type repeaters/transceivers, they offer significant savings in component and labor costs, along
with reduced voltage drop/power consumption, and improved reliability. To ensure performance
for all loop lengths, the LXT312A and LXT315A are 100% AC/DC tested using inputs
generated by Intel’s proprietary transmission line and network simulator.
The LXT312A and LXT315A are advanced CMOS devices which require only a single 5-volt
power supply.
Product Features
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Integrated repeater/transceiver circuit on a
single CMOS chip
On-chip equalization network
On-chip ALBO
Low power consumption
No tuning coil
On-chip Loopback
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Recovered Clock Output
0 to 36 dB dynamic range
-11 dB interference margin
Compatible with CB113/TA24
specifications
Single 5 V CMOS technology
Available in 16-pin PDIP and 44-pin PLCC
As of January 15, 2001, this document replaces the Level One document
LXT312A/LXT315A — Low Power T1 PCM Repeaters/Transceivers.
Order Number: 249071-001
January 2001
ETC [ ETC ]
