Series C76
Optically isolated
computer input/output modules
C76 I/O INTERFACE SYSTEM
APPLICATIONS
• Robotics
• Programmable Controllers
• Process Control
• Machine Tool Control
• Energy Management
• Automatic Test Equipment
FEATURES/BENEFITS
• Input Enable Function: For computer timing
function control.
• Floating Outputs: Eliminates ground loops and
signal noise. Protects computer I/O and logic
circuits
• Low Off-State Leakage: High off-state
impedance
• Switches/Controls High Voltages: To 250 Vrms
Switches/Controls High Currents: To 1.0 Arms
• High Noise Immunity: Control signals isolated
from switching noise
• High Dielectric Strength: Safety and protection
of control and signal level circuits
DESCRIPTION
The Series C76 solid-state computer input/output
modules are designed expressly for application in
computerized control systems where reliable
noise-free interface of switching is required to
isolate computer logic elements from high
conducted noise encountered in industrial
environments. Sensitive logic circuitry is kept
noise-free by means of optical isolation between
logic and power lines.
Output modules allow either TTL or CMOS level
signals to control the switching of power to high
voltage and high current loads. Hysteresis at the
input significantly increases the noise margin when
used in the CMOS input mode, preventing false
triggering in noisy environments
Input modules convert the presence or absence
of load level voltages from pressure, flow,
temperature and other transducers, limit switches,
solenoids or relays to “clean” low level logic signals
for computer input. An ENABLE function maintains
the module’s output in an “open” state until the
ENABLE terminal is brought up to the bias supply
level.
C76 20
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
© 2002 TELEDYNE RELAYS
C76\072002\Q1
TELEDYNE [ TELEDYNE TECHNOLOGIES INCORPORATED ]
