MC145423中文资料Universal Digital Loop Transceiver (UDLT-3)数据手册恩XP规格书

描述 Description

Overview 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.
An evaluation board is available for this device.

特性 Features

•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
•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
•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