NTE6860
Integrated Circuit
NMOS 鈥?FSK Digital Modem, 600bps
Description:
The NTE6860 is a MOS subsystem in a 24鈥揕ead DIP type plastic package designed to be integrated
into a wide range of equipment utilizing serial data communications.
The modem provides the necessary modulation, demodulation and supervisory control functions to
implement a serial data communications link, over a voice grade channel, utilizing frequency shift key-
ing (FSK) at bit rates up to 600 bps. The NTE6860 can be implemented into a wide range of data
handling systems, including stand alone modems, data storage devices, remote data communication
terminals and I/O interfaces for minicomputers.
N鈥揷hannel silicon鈥揼ate technology permits the NTE6860 to operate using a single鈥搗oltage supply
and be fully TTL compatible.
The modem is compatible with the NTE6860 microcomputer family, interfacing directly with the
Asynchronous Communications Interface Adapter to provide low鈥搒peed data communications capa-
bility.
Features:
D
Originate and Answer Mode
D
Crystal or External Reference Control
D
Modem Self Test
D
Terminal Interfaces TTL鈥揅ompatible
D
Full鈥揇uplex or Half鈥揇uplex Operation
D
Automatic Answer and Disconnect
D
Compatible Functions for 100 Series Data Sets
D
Compatible Functions for 1001A/B Data Couplers
Absolute Maximum Ratings:
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.3 to +7.0V
Input Voltage, V
in
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.3 to +7.0V
Operating Temperature Range, T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0擄 to 70擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +150擄C
Thermal Resistance, Junction鈥搕o鈥揂mbient, R
thJA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +120擄C/W
Note 1. This device contains circuitry to protect the inputs against damage due to high static voltages
or electric fields; however, it is advised that normal precautions be taken to avoid application
of any voltage higher than maximum rated voltages to this high impedance circuit.
Reliability of operation is enhanced if unused inputs are tied to an appropriate logic voltage
level (e.g. either V
SS
or V
CC
).
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