LTC1387CSW Linear Technology, LTC1387CSW Datasheet - Page 7
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LTC1387CSW
Manufacturer Part Number
LTC1387CSW
Description
IC TXRX RS232/RS485 5VSNGL20SOIC
Manufacturer
Linear Technology
Type
Transceiverr
Datasheet
1.LTC1387CSWPBF.pdf
(12 pages)
Specifications of LTC1387CSW
Number Of Drivers/receivers
2/2
Protocol
RS232, RS485
Voltage - Supply
5V
Mounting Type
Surface Mount
Package / Case
20-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC1387CSW
Manufacturer:
LT
Quantity:
5 510
Part Number:
LTC1387CSW
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LTC1387CSW#PBF
Manufacturer:
LTC
Quantity:
450
Company:
Part Number:
LTC1387CSW#PBF
Manufacturer:
LTC
Quantity:
737
Part Number:
LTC1387CSW#TR
Manufacturer:
LT/凌特
Quantity:
20 000
Part Number:
LTC1387CSW#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
BLOCK
Figure 1. RS485 Driver
Test Load
TEST CIRCUITS
V
232 = 0V, DXEN = 3V
Figure 4. RS232 Driver
Timing Test Circuit
DD
Y
Z
485/232
C1
D
DXEN
GND
V
OD
*485/232, DXEN, RXEN = V
A
B
Y
Z
10
1
2
3
4
5
6
7
8
9
WITHOUT LOOPBACK
Y, Z
RS232 MODE
DIAGRAM
R
R
LTC1387 • F01
V
C
OC
L
20
19
18
17
16
15
14
13
12
11
CC
R
LTC1387 • F04
L
R
R
D
D
ON
RXEN
V
V
W
CC
A
B
Y
Z
EE
C2
V
485/232*
DD
C1
DXEN
SLEW
GND
A
B
Y
Z
D
10
1
2
3
4
5
6
7
8
9
WITHOUT LOOPBACK
Figure 2. RS485 Driver/Receiver
Timing Test Circuit
RS485 MODE
Y
Z
485 = 3V, DXEN = 3V, RXEN = 3V
D
Figure 5. RS232 Receiver
Timing Test Circuit
232 = 0V, DXEN = 3V, RXEN = 3V
R
L
Y, Z
20
19
18
17
16
15
14
13
12
11
V
R
R
D
SLEW
ON
RXEN
V
CC
A
B
Y
EE
A, B
C2
C
C
485/232
C1
L
L
DXEN*
V
GND
DD
Y
Z
A
B
R
10
1
2
3
6
7
8
9
WITH LOOPBACK
R
RS232 MODE
LTC1387 • F05
15pF
LTC1387 • F02
15pF
20
19
18
17
16
15
14
13
12
11
V
R
R
D
D
RXEN*
V
CC
A
B
Y
Z
ON
EE
C2
485/232*
Figure 3. RS485 Driver Output
Enable/Disable Timing Test Load
Figure 6. Receiver Output
Enable/Disable Timing Test Load
C1
DXEN*
RECEIVER
V
GND
DD
DR OUT
Y
Z
OUT
10
1
2
3
6
7
8
9
WITH LOOPBACK
RS485 MODE
C
LTC1387
C
500
L
L
1k
LTC1387 • F06
LTC1387 • F03
V
V
CC
CC
S1
LTC1387 • BD
S1
S2
S2
20
19
18
17
16
15
14
13
12
11
V
R
R
D
SLEW
RXEN*
V
CC
A
B
Y
7
EE
ON
C2