LTC1487 LINER [Linear Technology], LTC1487 Datasheet - Page 4

• Manufacturer Part Number: LTC1487
• Description: Ultra-Low Power RS485 with Low EMI, Shutdown and High Input Impedance
• Manufacturer: LINER [Linear Technology]

SWITCHI G CHARACTERISTICS
LTC1487
SYMBOL
t
t
t
t
TYPICAL PERFORMANCE CHARACTERISTICS
4
The
temperature range.
Note 1: Absolute maximum ratings are those beyond which the safety of
the device cannot be guaranteed.
Note 2: All currents into device pins are positive; all currents out ot device
pins are negative. All voltages are referenced to device ground unless
otherwise specified.
ZH(SHDN)
ZL(SHDN)
ZH(SHDN)
ZL(SHDN)
450
400
350
300
250
200
150
100
120
100
50
80
60
40
20
0
0
– 50
denotes specifications which apply over the full operating
0
Supply Current vs Temperature
Driver Output Low Voltage
vs Output Current
T
A
DRIVER DISABLED WITH NO LOAD
–25
= 25 C
PARAMETER
Driver Enable from Shutdown to Output High
Driver Enable from Shutdown to Output Low
Receiver Enable from Shutdown to Output High
Receiver Enable from Shutdown to Output Low
0
1
OUTPUT VOLTAGE (V)
U
TEMPERATURE ( C)
WITH DRIVER ENABLED
25
THERMAL SHUTDOWN
AND NOMINAL LOAD
DRIVER ENABLED
WITH NO LOAD
50
2
75
100
125
W
LTC1487 • TPC01
3
LTC1487 • TPC04
150
U
175
4
–100
–80
–90
–10
–20
–30
–40
–50
–60
–70
80
70
60
50
40
30
20
10
0
0
Driver Differential Output Voltage
vs Output Current
0
Driver Output High Voltage
vs Output Current
0
T
A
CONDITIONS
C
C
C
C
0.5
= 25 C
L
L
L
L
= 100pF (Figures 4, 6), S2 Closed
= 100pF (Figures 4, 6), S1 Closed
= 15pF (Figures 2, 8), S2 Closed
= 15pF (Figures 2, 8), S1 Closed
1
1.0
0 C TA 70 C, V
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
1.5
2
2.0
Note 3: All typicals are given for V
Note 4: The LTC1487 is not tested and is not quality-assurance sampled at
– 40 C and at 85 C. These specifications are guaranteed by design,
correlation, and/or inference from 0 C, 25 C and/or 70 C tests.
2.5
3
3.0
3.5
LTC1487 • TPC02
T
CC
LTC1487 • TPC05
4
A
= 25 C
= 5V (Notes 2, 3) unless otherwise noted.
4.0
4.5
5
2.24
2.22
2.20
2.18
2.16
2.14
2.12
2.10
2.08
2.06
2.04
2.02
2.00
500
450
400
350
300
250
200
150
–50
–50
MIN
Driver Differential Output Voltage
vs Temperature
Driver Skew vs Temperature
CC
= 5V and T
–25
–25
0
0
TEMPERATURE ( C)
TEMPERATURE ( C)
TYP
A
= 25 C.
25
25
50
50
2000
2000
2000
2000
MAX
75
75
R
L
LTC1487 • TPC03
= 54
LTC1487 • G06
100
100
UNITS
125
125
ns
ns
ns
ns