LTC1481IS8 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1481IS8 Datasheet PDF : 8 Pages
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LTC1481
TYPICAL PERFORMANCE CHARACTERISTICS
Driver Output High Voltage
vs Output Current
0
–10 TA = 25°C
–20
–30
–40
–50
–60
–70
–80
–90
0
1
2
3
4
5
OUTPUT VOLTAGE (V)
1481 G04
Receiver tPLH – tPHL vs
Temperature
14
12
10
8
6
4
2
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1481 G05
Driver Skew vs Temperature
3.0
2.5
2.0
1.5
1.0
0.5
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1481 G05
PIN FUNCTIONS
RO (Pin 1): Receiver Output. If the receiver output is
enabled (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, 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. If RE is high and DE is low, the part will enter a low
power (1µA) shutdown state.
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.
A (Pin 6): Driver Output/Receiver Input.
B (Pin 7): Driver Output/Receiver Input.
VCC (Pin 8): Positive Supply. 4.75V < VCC < 5.25V.
UU
FU CTIO TABLES
LTC1481 Transmitting
INPUTS
RE
DE
DI
X
1
1
X
1
0
0
0
X
1
0
X
*Shutdown mode for LTC1481
OUTPUTS
B
A
0
1
1
0
Z
Z
Z*
Z*
LTC1481 Receiving
INPUTS
RE
DE
A–B
0
0
≥ 0.2V
0
0
≤ – 0.2V
0
0 Inputs Open
1
0
X
*Shutdown mode for LTC1481
OUTPUTS
RO
1
0
1
Z*
4
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