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MC145422DWMOTOROLAN/a5avaiUniversal Digital-Loop Transceiver
MC145422PMOTN/a200avaiUniversal Digital-Loop Transceiver
MC145426DWMOTN/a40avaiUniversal Digital-Loop Transceiver
MC145426PMOTN/a412avaiUniversal Digital-Loop Transceiver


MC145426P ,Universal Digital-Loop TransceiverBLOCK DIAGRAMSI1LO1 + 1 MODULATION BUFFER*SI2SERE1– 1 RECEIVELO2RxREGISTERLB*PDCCISEQUENCE*ANDSIECO ..
MC145428DW , Asynchronous-to-Synchronous and Synchronous-to-Asynchronous Converter
MC145428L ,Data Set Interface Asynchronous-To-Synchronous Synchronous-To-Asynchronous Converter(13) MOTOROLAAdvance InformationData Set InterfaceAsynchronous-To-SynchronousSynchronous-To-Asynchr ..
MC145428P ,Data Set Interface Asynchronous-To-Synchronous Synchronous-To-Asynchronous Converter(13) MOTOROLAAdvance InformationData Set InterfaceAsynchronous-To-SynchronousSynchronous-To-Asynchr ..
MC145429L ,TELSET AUDIO INTERFACEFeatures provided on the device include:CMOS(LOW-POWER COMPLEMENTARY MOS)TELSET AUDIO INTERFACETELS ..
MC145429P ,TELSET AUDIO INTERFACE(fi)I Advance Information IM OTOROLAThe MC145429 is a silicon-gate CMOS Telset Audio Interface IC i ..
MC68QH302PV20 , Quad HDLC Integrated Multiprotocol Processor
MC68S711E9CFN2 ,Technical Data
MC68S711E9CFN2 ,Technical Data
MC68S711E9CFN2 ,Technical Data
MC68SEC000CFU10 ,M68000 USERS MANUAL ADDENDUM Order this document by M68000UMAD/ADCommunications and AdvancedConsumer Technologi ..
MC68SEC000CFU20 ,Microprocessor, sixteen 32-bit data and address registers, 16-Mbyte direct addressing range, memory-mapped input/output (I/O), 14 addressing modes, 20MHzfeatures: • Sixteen 32-Bit Data and Address Registers• 16-Mbyte Direct Addressing Range• Program Co ..


MC145422DW-MC145422P-MC145426DW-MC145426P
Universal Digital-Loop Transceiver
---The MC145422 and MC145426 UDLTs are high–speed data transceivers
that provide 80 kbps full–duplex data communication over 26 AWG and larger
twisted–pair 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–pair wire.
These devices are designed for compatibility with existing, as well as
evolving, telephone switching hardware and software architectures.
The UDLT chip–set 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–power operation and proven capability for complex analog/digital
LSI functions. Provides Full–Duplex Synchronous 64 kpbs Voice/Data Channel and Two
8 kbps Signaling Data Channels Over One 26 AWG Wire Pair Up to Two
Kilometers Compatible with Existing and Evolving Telephone Switch Architectures and
Call Signaling Schemes Automatic Detection Threshold Adjustment for Optimum Performance Over
Varying Signal Attenuations Protocol Independent Single 5 V Power Supply 22–Pin PDIP, 24–Pin SOG Packages Application Notes AN943, AN949, AN968, AN946, and AN948
MC145422 Master UDLT
Pin Controlled Power–Down and Loopback Features Signaling and Control I/O Capable of Sharing Common Bus Wiring with
Other UDLTs Variable Data Clock — 64 kHz to 2.56 MHz 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
Compatible with MC145500 Series PCM Codec–Filters Pin Controlled Loopback Feature Automatic Power–Up/Power–Down Feature On–Chip Data Clock Recovery and Generation Pin Controlled 500 Hz D3 or CCITT Format PCM Tone Generator for
Audible Feedback Applications
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