參數(shù)資料
型號(hào)： LTC1482
廠商： Linear Technology Corporation
英文描述： Low Power RS485 Transceiver with Carrier Detect and Receiver Fail-Safe(低功耗RS485收發(fā)器（帶載流子檢測(cè)和失效保險(xiǎn)）)
中文描述： 485收發(fā)器低功率檢測(cè)器和接收器的失效保護(hù)（低功耗485收發(fā)器的載波（帶載流子檢測(cè)和失效保險(xiǎn)））
文件頁(yè)數(shù)： 4/16頁(yè)
文件大?。?/td> 212K
代理商： LTC1482
4
LTC1482
SYMBOL
t
CDH(SHDN)
Receiver Input to CD Output High at Shutdown
PARAMETER
CONDITIONS
R
DIFF
= 54
, C
L1
= C
L2
= 100pF,
(Figures 4, 11) DI/SHDN = DE
R
DIFF
= 54
, C
L1
= C
L2
= 100pF,
(Figures 4, 11) DI/SHDN = DE
C
L
= 15pF (Figures 3, 9) S2 Closed,
A = 750mV, B = –750mV, DE = 0,
DI/SHDN =
C
L
= 15pF (Figures 3, 9) S1 Closed,
A = –750mV, B = 750mV, DE = 0,
DI/SHDN =
C
L
= 15pF (Figures 3, 9) S2 Closed,
A = 750mV, B = –750mV, DE = 0,
DI/SHDN =
C
L
= 15pF (Figures 3, 9) S1 Closed,
A = –750mV, B = 750mV, DE = 0,
DI/SHDN =
MIN
TYP
2600
MAX
5000
UNITS
G
ns
t
CDL(SHDN)
Receiver Input to CD Output Low from Shutdown
G
2600
5000
ns
t
ZH(SHDN)
Receiver Enable from Shutdown to Output High
G
30
600
ns
t
ZL(SHDN)
Receiver Enable from Shutdown to Output Low
G
2600
5000
ns
t
HZ(SHDN)
Receiver Disable from High on Shutdown
G
200
600
ns
t
LZ(SHDN)
Receiver Disable from Low on Shutdown
G
200
600
ns
The
G
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. V
CC
= 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 V
CC
= 5V and T
A
= 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.
SWITCHI
N
G CHARACTERISTICS
U
TYPICAL PERFOR AU
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
R
1482 G01
6
5
4
3
2
1
0
T
A
= 25
°
C
V
THRO(HIGH)
V
THRO(LOW)
TEMPERATURE (
°
C)
–55 –35 –15
5
25
45
65
85 105 125
R
1482 G02
0
–0.02
–0.04
–0.06
–0.08
–0.1
–0.12
–0.14
–0.16
–0.18
–0.20
V
CC
= 5V
V
THRO(HIGH)
V
CM
= –7V
V
CM
= 12V
V
CM
= 0V
TEMPERATURE (
°
C)
–55 –35 –15
5
25
45
65
85 105 125
R
1482 G03
0
–0.02
–0.04
–0.06
–0.08
–0.1
–0.12
–0.14
–0.16
–0.18
–0.20
V
CC
= 5V
V
THRO(LOW)
V
CM
= –7V
V
CM
= 12V
V
CM
= 0V
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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