ET7272 Datasheet, PDF (1/3 Pages) IC-Haus GmbH – QUAD DIFFERENTIAL LINE DRIVER

QUAD DIFFERENTIAL LINE DRIVER
WITH SEPARATE LOGIC BIAS AND DRIVER BIAS
SUPPLIES, AND ENABLE FUNCTION
ET7272
FEATURES
• Supply Voltage Range 3.5V to 30V
• Operation to 800KHz
• CMOS and TTL Compatible Inputs
• Separate logic bias and driver supply pins
• Optional single supply operation for moderate
power applications
• High Impedance Buffered Inputs with Hysteresis
may be driven directly by phototransistors
• Tri-State outputs
• 80mA peak SINK/SOURCE current
• Outputs Protected by Thermal Shut-Down
APPLICATIONS
• Optical Encoders
• Industrial Controls
DESCRIPTION
These line drivers are pin compatible with 26LS31 in applications where pin 4 = 5V and pin 12 = GND. Internal clamp
diodes allow trouble-free operation when driving cable lengths exceeding 100m. Split supplies are provided to
minimize standby power dissipation in high voltage applications. The logic should be powered from a regulated 5V
supply at the VccBias pin. The output stages may then be powered by a separate supply at VccDrivers, up to 30V.
Output voltage swings of 0.3V to VCC-1.9V are typical. The outputs are protected against shorts to ground, shorts to
Vcc and to other outputs, by a two-fold scheme of current limiting and thermal shutdown. This assures highly reliable
operation in harsh environments. Heat-sinking may be accomplished at pin 8 which is directly connected to the ASIC
substrate.
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Operating Temperature
T_A
Range
Supply Voltage Range(both) V_CC
Min.
Max.
Units
Ref.
-55
115
°C
4.5
30
V
ETIC RESERVES THE RIGHT TO MAKE CHANGES AT ANY TIME TO IMPROVE THE DESIGN AND TO SUPPLY THE BEST PRODUCT.
©2000, Rev A1
iC-Haus GmbH
Integrated Circuits
Am Kuemmerling 18, D-55294 Bodenheim
Page 1 of 3
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