CMX654
V23 Transmit Modulator
D/654/3 June 1998
Advance Information
Features
•
1200bits/sec, V23 Transmit Modulator
•
3.0V to 5.5V Supply: 1mA typical at 3V
•
Zero Power Mode: 1µA typical
•
1200bits/sec Tx Data Retiming
•
3.58MHz Xtal/Clock Rate
•
Meets ITU and ETSI Specifications
•
16 Pin SOIC and DIP Packages
Applications
•
Caller ID generation for:
•
ISDN Terminal Adapters
•
Wireless Local Loop System
•
ISDN PABX Applications
•
Pair-Gain Systems
•
Public Switched Telephone Networks
•
Trunk Exchanges
1.1
Brief Description
The CMX654 is a low power CMOS integrated circuit for the transmission of asynchronous 1200bits/sec data in
accordance with ITU, V.23 and ETSI specifications.
The device incorporates an optional Tx data retiming function. The device can be operated so that only the
mark or space tone is produced.
The CMX654 may be used in a wide range of telephone telemetry systems. With a low voltage requirement of
3.0V it is suitable for both portable terminal and line powered applications. A very low current 'sleep' mode (1
µ
A
typ.) and operating current of 1mA typ. mean the device is ideal for line powered applications. A 3.58MHz
standard Xtal/Clock rate is required and the device operates from a 3.0 to 5.5V supply. Both SOIC (D4) and
Plastic DIL (P3) 16-pin package types are available.
©
1998
Consumer Microcircuits Limited
CMLMICRO [ CML MICROCIRCUITS ]
