ETC1 ET9600 Three channel differential line driver ic Datasheet

THREE CHANNEL DIFFERENTIAL
LINE DRIVER IC
ET9600
With built-in current sink to drive an LED
FEATURES
•
Supply Voltage Range 4.5V to 30V
•
Operation to 800KHz
•
CMOS and TTL Compatible Inputs
•
Outputs RS-422A Compatible
•
High Impedance Buffered Inputs with Hysteresis
•
Outputs short circuit protected
•
70mA peak SINK/SOURCE current
•
Outputs Protected by Thermal Shut-Down
APPLICATIONS
•
Optical Encoders
•
Industrial Controls
DESCRIPTION
These line drivers are similar to the four channel 26ET31, with the added feature of providing an internal LED drive.
The device is biased so that the base of the LED drive transistor (shown) is held at 2.5V. To set the LED current,
connect a resistor from RSET to ground. For more information on LED drive, see application note APP-D2.
Voltage connected to the VCC pin is regulated for use by logic functions within the chip, while the output drivers run
off this voltage without modification.
The device marking (see photo) includes the suffix SCP to denote that this version has ‘short circuit protection’.
ABSOLUTE MAXIMUM RATINGS
Parameter
Operating Temperature
Range
Supply Voltage Range
Symbol
TA
VCC
Min.
-40
Max.
125
Units
°C
4.5
30
V
Ref.
Note 1
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
Tel +49-6135-9292-0
Integrated Circuits
Fax +49-6135-9292-192
Am Kuemmerling 18, D-55294 Bodenheim
http://www.ichaus.com
Page 1 of 2
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, typical values given at VCC=12V, TA = 25°C, with LED and RSET open.
Parameters
Overtemp Operate Point (junction)
Overtemp Release Point (junction)
Min.
Input Positive-Going Threshold
G
Input Negative-Going Threshold
Low Level Input Current
High Level Input Current
Low Level Output
Symbol
TJOP
TJRP
Icc1
Icc2
VT+
VTIIL
IIH
VOL
High Level Output
High Level Output
VOH
VOH
2.4
27.8
Supply Current
7.0
9.0
1.1
0.7
Typ.
155
105
11.0
12.0
1.5
1.0
-0.1
0
150
2.9
28.4
Max.
17.0
20.0
1.9
1.4
-4.0
4.0
375
Units
°C
°C
mA
V
V
µA
µA
mV
V
V
Test Conditions
Note 1
Note 1
Vcc = 4.5 V
Vcc = 30.0V
VIN = 0V
VIN = 5V
VCC = 4.5V-30V
IOL = 10mA
IOH = -10mA,VCC =
IOH = -10mA,VCC = 30V
NOTES:
1. This is not a test parameter, but for information
only.
2. It may be necessary to clamp the outputs with
Schottky diodes when driving extemely long
cables with high capacitance between outputs.
These diodes should have a forward voltage of
less than 0.4V, and be connected with cathode to
the output and anode to ground.
PACKAGE
SUFFIX
Chip Only
14 Lead SOIC
-C
-SOP
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
Tel +49-6135-9292-0
Integrated Circuits
Fax +49-6135-9292-192
Am Kuemmerling 18, D-55294 Bodenheim
http://www.ichaus.com
Page 2 of 2
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