LTC485 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC485 Datasheet PDF : 14 Pages
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Typical Performance Characteristics
LTC485
Receiver |tPLH – tPHL|
vs Temperature
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
485 G10
Driver Skew vs Temperature
5.4
4.8
4.2
3.6
3.0
2.4
1.8
1.2
0.6
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
485 G11
Supply Current vs Temperature
640
580
520
460
DRIVER ENABLED
400
340
DRIVER DISABLED
280
220
160
100
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
485 G12
Pin Functions
RO (Pin 1): Receiver Output. If the receiver output is en-
abled (RE low), then if A > B by 200mV, RO will be high.
If A < B by 200mV, then RO will be low.
RE (Pin 2): Receiver Output Enable. A low enables the
receiver output, RO. A high input forces the receiver output
into a high impedance state.
DE (Pin 3): Driver Outputs Enable. A high on DE enables
the driver output. A and B, and the chip will function as a
line driver. A low input will force the driver outputs into a
high impedance state and the chip will function as a line
receiver.
DI (Pin 4): Driver Input. If the driver outputs are enabled
(DE high), then a low on DI forces the outputs A low and
B high. A high on DI with the driver outputs enabled will
force A high and B low.
GND (Pin 5): Ground Connection.
A (Pin 6): Driver Output/Receiver Input.
B (Pin 7): Driver Output/Receiver Input.
VCC (Pin 8): Positive Supply; 4.75 < VCC < 5.25.
485fi
5
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