參數(shù)資料
型號： LT1485
廠商： Linear Technology Corporation
英文描述： Differential Bus Transceiver
中文描述： 差分總線收發(fā)器
文件頁數(shù)： 2/12頁
文件大小： 257K
代理商： LT1485
2
LTC1485
A
U
G
W
A
W
U
W
A
R
BSOLUTE
XI
TI
S
U
PACKAGE/ORDER U
(Note 1)
Supply Voltage (V
CC
) .............................................. 12V
Control Input Voltages................... –0.5V to V
CC
+ 0.5V
Control Input Currents........................ – 50mA to 50mA
Driver Input Voltages..................... –0.5V to V
CC
+ 0.5V
Driver Input Currents.......................... –25mA to 25mA
Driver Output Voltages .........................................
±
14V
Receiver Input Voltages........................................
±
14V
Receiver Output Voltages .............. –0.5V to V
CC
+ 0.5V
Operating Temperature Range
LTC1485C............................................... 0
°
C to 70
°
C
LTC1485I .......................................... –40
°
C to 85
°
C
Storage Temperature Range ................ –65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec.)................ 300
°
C
SYMBOL
V
OD1
V
OD2
PARAMETER
Differential Driver Output Voltage (Unloaded)
Differential Driver Output Voltage (With Load)
CONDITIONS
I
O
= 0
R = 50
, (RS422)
R = 27
, (RS485) (Figure 1)
R = 27
or R = 50
(Figure 1)
MIN
TYP
5
MAX
V
UNITS
G
G
G
2
V
V
V
1.5
5
V
OD
Change in Magnitude of Driver Differential
Output Voltage for Complementary Output States
Driver Common-Mode Output Voltage
Change in Magnitude of Driver Common-Mode
Output Voltage for Complementary Output States
Input High Voltage
Input Low Voltage
Input Current
Input Current (A, B)
G
0.2
V
OC
|V
OC
|
R = 27
or R = 50
(Figure 1)
R = 27
or R = 50
(Figure 1)
G
3
V
V
G
0.2
V
INH
V
INL
I
IN1
I
IN2
DI, DE, RE
DI, DE, RE
DI, DE, RE
V
CC
= 0V or 5.25V, V
IN
= 12V
V
CC
= 0V or 5.25V, V
IN
= –7V
–7V
≤
V
CM
≤
12V
V
CM
= 0V
I
O
= –4mA, V
ID
= 0.2V
I
O
= 4mA, V
ID
= –0.2V
V
CC
= Max 0.4V
≤
V
O
≤
2.4V
No Load; DI = GND or V
CC
Outputs Enabled
Outputs Disabled
–7V
≤
V
CM
≤
12V
V
O
= –7V
V
O
= 10 V
0V
≤
V
O
≤
V
CC
G
2.0
V
V
G
0.8
±
2
1.0
–0.8
0.2
G
μ
A
mA
mA
G
G
V
TH
V
TH
V
OH
V
OL
I
OZR
I
CC
Differential Input Threshold Voltage for Receiver
Receiver Input Hysteresis
Receiver Output High Voltage
Receiver Output Low Voltage
Three-State Output Current at Receiver
Supply Current
G
–0.2
V
G
60
mV
G
3.5
V
V
G
0.4
±
1
G
μ
A
G
G
1.8
1.7
2.3
2.3
mA
mA
k
mA
mA
mA
R
IN
I
OSD1
I
OSD2
I
OSR
Receiver Input Resistance
Driver Short-Circuit Current, V
OUT
= High
Driver Short-Circuit Current, V
OUT
= Low
Receiver Short-Circuit Current
G
12
G
250
250
85
G
G
7
V
CC
= 5V (Notes 2, 3), unless otherwise noted.
ELECTRICAL C
HARC
C
D
1
2
3
4
5
6
7
8
TOP VIEW
RO
B
V
CC
N8 PACKAGE
8-LEAD PLASTIC DIP
D
R
A
GND
DE
DI
S8 PACKAGE
8-LEAD PLASTIC SOIC
RE
T
JMAX
= 125
°
C,
θ
JA
= 100
°
C/W (N)
T
JMAX
= 150
°
C,
θ
JA
= 150
°
C/W (S)
Consult factory for Military grade parts.
ORDER PART
NUMBER
S8 PART MARKING
LTC1485CN8
LTC1485IN8
LTC1485CS8
LTC1485IS8
1485
1485I
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