MC145423 Ver la hoja de datos (PDF) - Freescale Semiconductor
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MC145423 Datasheet PDF : 30 Pages
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Order Number: MC145423/D
Rev. 0, 8/24/00
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Universal Digital Loop
Transceiver (UDLT-3)
Pin Selectable Master/Slave
Limited Distance Modem
The MC145423 is a CMOS integrated circuit designed to be one
of the major building blocks in digital subscriber voice/data
telephone systems and remote data acquisition and control systems.
The UDLT-3 incorporates into one device, all the functionality of
the MC145421 (ISDN UDLT-2 master), MC145425 (ISDN UDLT-2
slave), MC145422 (UDLT-1 master), and MC145426 (UDLT-1
slave).
Since these modes/functions are pin selectable, the MC145423
can be used in telephone switch line cards, as well as remote digital
telsets or data terminals.
• VDD = 4.5 V to 5.5 V
• 28-Pin SOIC and TSSOP Packages
• Protocol Independent
• Pin Controlled Power-Down
• LI Sensitivity Control in Master Mode
• 2.048 MHz Output in Slave Mode
UDLT-2 Features
• Synchronous Full Duplex 160 kbps Voice and Data
Communications in a 2B+2D Format for ISDN Compatibility
• Provides CCITT Basic Access Data Transfer Rate (2B+D) for
ISDNs on a Single Twisted Pair Up to 1 km on 26 AWG or
Larger Cable
UDLT-1 Features
• Pin Controlled Loopback
• Automatic Power-Up/Down (Slave)
• Full Duplex Synchronous 64 kbps Voice/Data Channel and Two
8 kbps Signaling Data Channels Over One 26 AWG Wire Pair Up
to 2 km
MC145423
DW SUFFIX
SOIC
CASE 751F
DT SUFFIX
TSSOP
CASE 1168
ORDERING INFORMATION
MC145423DW SOIC Package
MC145423DT TSSOP Package
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