Datasheet

4
LTC1483
sn1483 1483fs
TYPICAL PERFORMANCE CHARACTERISTICS
UW
Driver Differential Output Voltage
vs Temperature
TEMPERATURE (°C)
–50
DIFFERENTIAL VOLTAGE (V)
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
0
50
75
1483 G04
–25
25
100
125
R
L
= 54Ω
Driver Output High Voltage
vs Output Current
OUTPUT VOLTAGE (V)
0
OUTPUT CURRENT (mA)
2
4
5
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
1483 G06
13
T
A
= 25°C
PIN FUNCTIONS
UUU
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.
V
CC
(Pin 8): Positive Supply. 4.75V < V
CC
< 5.25V.
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.
FU CTIO TABLES
UU
LTC1483 Transmitting
INPUTS OUTPUTS
RE DE DI B A
X1101
X1010
00XZZ
1 0 X Z* Z*
*Shutdown mode for LTC1483
LTC1483 Receiving
INPUTS OUTPUTS
RE DE A – B RO
00≥0.2V 1
00≤–0.2V 0
0 0 Inputs Open 1
10 X Z*
*Shutdown mode for LTC1483
OUTPUT VOLTAGE
0
70
60
50
40
30
20
10
0
3
1483 G05
12 4
OUTPUT CURRENT (mA)
T
A
= 25°C
Driver Output Low Voltage
vs Output Current