FX/MX614 Product Preview Datasheet by CML Microcircuits

Microcircuits
Product Preview
FX/MX614
Bell 202 Compatible Modem
The FX614/MX614 is a low power CMOS integrated circuit for the reception or transmission of
asynchronous 1200bps data, and is suitable for use in Bell 202 type systems.
The device incorporates an optional Tx and Rx data retiming function that removes the need for a UART
in the associated µC when operating at 1200bps. An optional line equaliser is incorporated into the
receive path, controlled by an external logic level. The FX614/MX614 may be used in a wide range of
telephone systems.
Features
Optional 5bps and 150bps Back Channel
Optional 1200bps Data Retiming Facility
Optional Line Equalisation
3.58MHz Xtal/Clock
Applications
For Wireline Data Systems
Pay and Feature Phones
Supply Requirement
3.0 to 5.5V
With a low operating voltage, a very low-
current ‘sleep’ mode and an operating current
of 1mA the device is ideal for portable, terminal
and line powered applications. A 3.58MHz
standard Xtal/Clock rate is required and the
device operates from a 3.0V to 5.5V supply.
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