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LTC1482CS8 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC1482CS8
Description  Low Power RS485 Transceiver with Carrier Detect and Receiver Fail-Safe
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1482CS8 Datasheet(HTML) 4 Page - Linear Technology

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4
LTC1482
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
tCDH(SHDN) Receiver Input to CD Output High at Shutdown
RDIFF = 54Ω, CL1 = CL2 = 100pF,
q
2600
5000
ns
(Figures 4, 11) DI/SHDN = DE
tCDL(SHDN) Receiver Input to CD Output Low from Shutdown
RDIFF = 54Ω, CL1 = CL2 = 100pF,
q
2600
5000
ns
(Figures 4, 11) DI/SHDN = DE
tZH(SHDN)
Receiver Enable from Shutdown to Output High
CL = 15pF (Figures 3, 9) S2 Closed,
q
30
600
ns
A = 750mV, B = – 750mV, DE = 0,
DI/SHDN =
tZL(SHDN)
Receiver Enable from Shutdown to Output Low
CL = 15pF (Figures 3, 9) S1 Closed,
q
2600
5000
ns
A = – 750mV, B = 750mV, DE = 0,
DI/SHDN =
tHZ(SHDN)
Receiver Disable from High on Shutdown
CL = 15pF (Figures 3, 9) S2 Closed,
q
200
600
ns
A = 750mV, B = – 750mV, DE = 0,
DI/SHDN =
tLZ(SHDN)
Receiver Disable from Low on Shutdown
CL = 15pF (Figures 3, 9) S1 Closed,
q
200
600
ns
A = – 750mV, B = 750mV, DE = 0,
DI/SHDN =
The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 5V ±5% (Notes 2 and 3) unless otherwise noted.
Note 1: Absolute Maximum Ratings are those values beyond which the life of
a device may be impaired.
Note 2: All typicals are given for VCC = 5V and TA = 25°C.
Note 3: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to device ground unless
otherwise specified.
Note 4: For higher ambient temperatures, the part may enter thermal
shutdown during short-circuit conditions.
Note 5: Both driver input and driver enable pins are pulled high
simultaneously.
Note 6: Guaranteed by design.
Note 7: Measured with an external LTC1485 driver.
SWITCHING CHARACTERISTICS
TYPICAL PERFOR A CE CHARACTERISTICS
Receiver Output Voltage vs Input
Voltage
Receiver Input Threshold Voltage
(Output High) vs Temperature
Receiver Input Threshold Voltage
(Output Low) vs Temperature
INPUT VOLTAGE (V)
–0.2
–0.16
–0.12
–0.08
–0.04
0
1482 G01
6
5
4
3
2
1
0
TA = 25°C
VTHRO(HIGH)
VTHRO(LOW)
TEMPERATURE (
°C)
–55 –35 –15
5
25
45
65
85 105 125
1482 G02
0
–0.02
–0.04
–0.06
–0.08
–0.1
–0.12
–0.14
–0.16
–0.18
–0.20
VCC = 5V
VTHRO(HIGH)
VCM = –7V
VCM = 12V
VCM = 0V
TEMPERATURE (
°C)
–55 –35 –15
5
25
45
65
85 105 125
1482 G03
0
–0.02
–0.04
–0.06
–0.08
–0.1
–0.12
–0.14
–0.16
–0.18
–0.20
VCC = 5V
VTHRO(LOW)
VCM = –7V
VCM = 12V
VCM = 0V


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