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LTC1487CS8 Arkusz danych(PDF) 4 Page - Linear Technology

Numer części LTC1487CS8
Szczegółowy opis  Ultra-Low Power RS485 with Low EMI, Shutdown and High Input Impedance
PDF  8 Pages
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Producent  LINER [Linear Technology]
Strona internetowa  http://www.linear.com
Logo LINER - Linear Technology

LTC1487CS8 Arkusz danych(HTML) 4 Page - Linear Technology

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4
LTC1487
0
°C ≤ TA ≤ 70°C, VCC = 5V (Notes 2, 3) unless otherwise noted.
SWITCHI G CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
tZH(SHDN)
Driver Enable from Shutdown to Output High
CL = 100pF (Figures 4, 6), S2 Closed
q
2000
ns
tZL(SHDN)
Driver Enable from Shutdown to Output Low
CL = 100pF (Figures 4, 6), S1 Closed
q
2000
ns
tZH(SHDN)
Receiver Enable from Shutdown to Output High
CL = 15pF (Figures 2, 8), S2 Closed
q
2000
ns
tZL(SHDN)
Receiver Enable from Shutdown to Output Low
CL = 15pF (Figures 2, 8), S1 Closed
q
2000
ns
Note 3: All typicals are given for VCC = 5V and TA = 25°C.
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.
The q denotes specifications which apply over the full operating
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.
TYPICAL PERFORMANCE CHARACTERISTICS
TEMPERATURE (
°C)
–50
0
50
150
200
250
100
450
LTC1487 • TPC01
100
25
175
50
–25
125
75
0
150
300
350
400
DRIVER ENABLED
WITH NO LOAD
THERMAL SHUTDOWN
WITH DRIVER ENABLED
AND NOMINAL LOAD
DRIVER DISABLED WITH NO LOAD
Supply Current vs Temperature
Driver Differential Output Voltage
vs Output Current
Driver Output Low Voltage
vs Output Current
OUTPUT VOLTAGE (V)
0
0
20
40
60
80
100
120
TA = 25°C
12
3
4
LTC1487 • TPC04
TEMPERATURE (
°C)
–50
350
400
500
25
75
LTC1487 • G06
300
250
–25
0
50
100
125
200
150
450
Driver Skew vs Temperature
OUTPUT VOLTAGE (V)
0
40
50
60
4.0
LTC1487 • TPC02
30
20
0
1.0
2.0
3.0
0.5
4.5
1.5
2.5
3.5
10
80
70
TA = 25°C
Driver Output High Voltage
vs Output Current
OUTPUT VOLTAGE (V)
0
–40
–20
0
4
LTC1487 • TPC05
–60
–80
–50
–30
–10
–70
–90
–100
1
2
3
5
TA = 25°C
Driver Differential Output Voltage
vs Temperature
TEMPERATURE (
°C)
–50
2.08
2.20
2.22
2.24
0
50
75
LTC1487 • TPC03
2.04
2.02
2.16
2.12
2.06
2.18
2.00
2.14
2.10
–25
25
100
125
RL = 54Ω



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