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MC145422P Datasheet

  • MC145422P

  • Motorola, Inc [UNIVERSAL DIGITAL-LOOP TRANSCEIVER(UDLT)]

  • 264.48KB

  • MOTOROLA   MOTOROLA

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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document
by MC145422/D
Universal Digital-Loop
Transceivers (UDLT)
The MC145422 and MC145426 UDLTs are high鈥搒peed data transceivers
that provide 80 kbps full鈥揹uplex data communication over 26 AWG and larger
twisted鈥損air cable up to two kilometers in distance. Intended primarily for use in
digital subscriber voice/data telephone systems, these devices can also be
used in remote data acquisition and control systems. These devices utilize a
256 kilobaud modified differential phase shift keying burst modulation technique
for transmission to minimize RFI/ EMI and crosstalk. Simultaneous power
distribution and duplex data communication can be obtained using a single
twisted鈥損air wire.
These devices are designed for compatibility with existing, as well as
evolving, telephone switching hardware and software architectures.
The UDLT chip鈥搒et consists of the MC145422 Master UDLT for use at the
telephone switch linecard and the MC145426 Slave UDLT for use at the remote
digital telset and/or data terminal.
The devices employ CMOS technology in order to take advantage of their
reliable low鈥損ower operation and proven capability for complex analog/digital
LSI functions.
鈥?/div>
Provides Full鈥揇uplex Synchronous 64 kpbs Voice/Data Channel and Two
8 kbps Signaling Data Channels Over One 26 AWG Wire Pair Up to Two
Kilometers
鈥?/div>
Compatible with Existing and Evolving Telephone Switch Architectures and
Call Signaling Schemes
鈥?/div>
Automatic Detection Threshold Adjustment for Optimum Performance Over
Varying Signal Attenuations
鈥?/div>
Protocol Independent
鈥?/div>
Single 5 V Power Supply
鈥?/div>
22鈥揚(yáng)in PDIP, 24鈥揚(yáng)in SOG Packages
鈥?/div>
Application Notes AN943, AN949, AN968, AN946, and AN948
MC145422 Master UDLT
鈥?/div>
Pin Controlled Power鈥揇own and Loopback Features
鈥?/div>
Signaling and Control I/O Capable of Sharing Common Bus Wiring with
Other UDLTs
鈥?/div>
Variable Data Clock 鈥?64 kHz to 2.56 MHz
鈥?/div>
Pin Controlled Insertion/Extraction of 8 kbps Channel into LSB of 64 kbps
Channel for Simultaneous Routing of Voice and Data Through PCM Voice
Path of Telephone Switch
MC145426 Slave UDLT
鈥?/div>
Compatible with MC145500 Series PCM Codec鈥揊ilters
鈥?/div>
Pin Controlled Loopback Feature
鈥?/div>
Automatic Power鈥揢p/Power鈥揇own Feature
鈥?/div>
On鈥揅hip Data Clock Recovery and Generation
鈥?/div>
Pin Controlled 500 Hz D3 or CCITT Format PCM Tone Generator for
Audible Feedback Applications
MC145422
MC145426
22
1
P SUFFIX
PLASTIC DIP
CASE 708
24
1
DW SUFFIX
SOG PACKAGE
CASE 751E
ORDERING INFORMATION
MC145422P
MC145426P
Plastic DIP
Plastic DIP
MC145422DW SOG Package
MC145426DW SOG Package
REV 2
9/95
漏
Motorola, Inc. 1995
MOTOROLA
MC145422鈥C145426
1

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