LTC1334 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1334 Datasheet PDF : 16 Pages
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LTC1334
TYPICAL PERFORMANCE CHARACTERISTICS
RS485 Driver Output High Voltage
vs Output Current
–80
TA = 25°C
–70
VCC = 5V
–60
–50
–40
–30
–20
–10
0
0
1
2
3
4
5
OUTPUT VOLTAGE (V)
LTC1334 • TPC13
RS232 Driver Output Voltage
vs Temperature
10
8
6
OUTPUT HIGH
4
2
0
VCC = 5V
RL = 3k
–2
–4
–6
OUTPUT LOW
–8
–10
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LTC1334 • TPC16
RS485 Driver Output Low Voltage
vs Output Current
120
TA = 25°C
100 VCC = 5V
80
60
40
20
0
0
1
2
3
4
5
OUTPUT VOLTAGE (V)
LTC1334 • TPC14
RS232 Driver Short-Circuit
Current vs Temperature
30
VOUT = 0V
25 VCC = 5V
20
SOURCE
15
10
SINK
5
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LTC1334 • TPC17
RS485 Driver Output Short-Circuit
Current vs Temperature
160
VCC = 5V
140
120
SINK
(VOUT = 5V)
100
80
SOURCE
(VOUT = 0V)
60
40
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LTC1334 • TPC15
Driver Output Leakage Current
(Disable/Shutdown) vs Temperature
500
450 VCC = 5V
400
350
300
250
200
150
100
50
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LTC1334 • TPC18
PIN FUNCTIONS
C1+ (Pin 1): Commutating Capacitor C1 Positive Terminal.
Requires 0.1µF external capacitor between Pins 1 and 2.
C1– (Pin 2): Commutating Capacitor C1 Negative Terminal.
VDD (Pin 3): Positive Supply Output for RS232 Drivers.
Requires an external 0.1µF capacitor to ground.
A1 (Pin 4): Receiver Input.
B1 (Pin 5): Receiver Input.
Y1 (Pin 6): Driver Output.
Z1 (Pin 7): Driver Output.
SEL1 (Pin 8): Interface Mode Select Input.
SEL2 (Pin 9): Interface Mode Select Input.
Z2 (Pin 10): Driver Output.
Y2 (Pin 11): Driver Output.
B2 (Pin 12): Receiver Input.
A2 (Pin 13): Receiver Input.
GND (Pin 14): Ground.
VEE (Pin 15): Negative Supply Output. Requires an exter-
nal 0.1µF capacitor to ground.
6
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