ET7272-SOP [ETC]
QUAD DIFFERENTIAL LINE DRIVER; 四路差分线路驱动器
| 型号： | ET7272-SOP |
| 厂家： | 
ETC |
| 描述： | QUAD DIFFERENTIAL LINE DRIVER |
| 文件： | 总3页 (文件大小：42K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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
Min.
-55
Max.
115
Units
Ref.
Operating Temperature
Range
TA
°C
Supply Voltage Range(both)
VCC
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
Tel +49-6135-9292-0
Fax +49-6135-9292-192
http://www.ichaus.com
Integrated Circuits
Am Kuemmerling 18, D-55294 Bodenheim
Page 1 of 3
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, TA = 25°C and EN- <0.8V.
Parameters
Symbol
Min.
Typ.
Max.
Units
Test Conditions
Overtemp Operate Point (junction)1
Overtemp Release Point (junction)1
Vcc Bias Voltage Range
TJOP
TJRP
172
136
5
°C
°C
V
VccB
VccD
3.5
4.5
30
30
Vcc Drivers Voltage Range
5
V
Supply Current VccB1 (BIAS)
Supply Current VccD1 (DRIVERS)
Supply Current VccB2
IccB1
ICCD1
IccB2
11.9
2.4
2.5
16.0
3.3
3.4
mA
mA
mA
VccB and VccD = 5V
VccB and VccD = 5V
VccB and VccD = 5V,
EN- > 2V
Supply Current VccD2
ICCD2
0.0
0.1
mA
VccB and VccD = 5V,
EN- > 2V
Supply Current VccB3
Supply Current VccD3
Supply Current VccB4
IccB3
ICCD3
IccB4
12.1
2.4
2.6
18.5
3.3
3.5
mA
mA
mA
VccB and VccD = 30V
VccB and VccD = 30V
VccB and VccD = 5V,
EN- > 2V
Supply Current VccD4
ICCD4
0.0
0.1
mA
VccB and VccD = 5V,
EN- > 2V
Enable Input Threshold
VTHE
IILE
IIHE
IOZ
0.8
-10
-
1.5
0
108
0.0
2
10
150
4.0
V
Enable Low Level Input Current
Enable High Level Input Current
High Impedance Output Leakage
µA
µA
µA
VIN = 0V, VccB = 5V
VIN = 5V, VccB = 5V
VccD =30V, EN- > 2V,
Output at 15V
-4.0
Input Positive-Going Threshold
Input Negative-Going Threshold
Input Hysteresis
VT+
VT-
VH
1.05
0.75
-
1.25
0.95
0.3
1.45
1.15
-
V
V
V
VccB = 5V
VccB = 5V
VccB = 5V
Low Level Input Current
High Level Input Current
Low Level Output1
Low Level Output2
High Level Output1
IIL
IIH
VOL1
VOL2
VOH
-0.1
0
375
370
2.8
-4.0
4.0
500
500
µA
µA
mV
mV
V
VIN = 0V, VccB = 5V
VIN = 5V, VccB = 5V
IOL = 20mA, VccD = 5V
IOL = 20mA, VccD =30V
IOH = -20mA, VccD =
5V
1
2.4
High Level Output2
VOH2
27.7
28.1
V
IOH = -20mA,
VccD=30V
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
Fax +49-6135-9292-192
http://www.ichaus.com
Integrated Circuits
Am Kuemmerling 18, D-55294 Bodenheim
Page 2 of 3
AC SWITCHING CHARACTERISTICS
Values given at VCCB = 5V, VCCD = 24V, TA = 25°C, CL = 1000pF on all outputs, and EN- <0.8V.
Parameters
Symbol
Min.
Typ.
Max
.
Units
Test Conditions
Propagation delay, rising input 50%
point to zero crossing of differential
outputs
TPLH
450
630
ns
Propagation delay, falling input 50%
point to zero crossing of differential
outputs
TPHL
450
630
ns
Output Rise Time
Output Fall Time
TR
TF
700
700
980
980
ns
ns
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
Chip Only
SUFFIX
-C
16 Lead SOIC
-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
Fax +49-6135-9292-192
http://www.ichaus.com
Integrated Circuits
Am Kuemmerling 18, D-55294 Bodenheim
Page 3 of 3
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