5
dc1794afa
DEMO MANUAL DC1794A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation
that the interconnection of its circuits as described herein will not infringe on existing patent rights.
scheMAtic DiAgrAM
C1 10uF 3216
JP3
RE
JP4
ON
C2
O
PT
C3
O
PT
JP2
DE
JP1
TE
JP5
SLO
H
G
F
E
D
C
B
A
H
G
F
E
D
C
B
A
1
2
3
4
5
6
7
1
2
3
4
5
6
7
TI
TLE:
SCHE
M
A
TIC
SIZE
IC NO.
REV.
D
ATE
:
SHEE
T
OF
APPROVALS
SCALE
=
NONE
CUSTOMER
NOTICE
Thursda
y, Februar
y 12, 201
5
3
REINFORCED
RS485
ISOLA
TOR
KEI
TH
B
.
1
1
LTM2885I
Y
DEMO
CIRCUIT
1794A
ET
A
D
D
E
V
O
R
P
P
A
V
E
R
O
C
E
R
EVISIO
N
H
ISTO
R
Y
D
ES
CR
IPTION
1630
M
cCarth
y Bl
vd.
M
ilpitas, CA
95035
Phone:
(408)
432-1900
Fa
x: (408)
434-0507
www
.linear.com
LTC
CONFIDENTI
AL
FO
R
CU
STO
M
ER
USE
ONLY
THIS CIRCUIT IS PROPRIETAR
Y TO
LINEAR TECHNOLOG
Y AND
SUPPLIED FOR
USE
W
ITH
LINEAR
TECHNOLOG
Y
PARTS.
LINEAR TECHN
O
LOG
Y
HAS MADE A
BEST EFF
O
RT
TO DESIGN
A CIRCUIT
THAT MEETS
CUSTOMER -
SUPPLIED
SPECI
FICA
TI
O
NS;
H
O
W
EVER,
IT
REMAIN
S
THE CUST
O
MERS RESP
O
NSIBILIT
Y T
O
VERIFY
PR
O
PER
AND
RELIABLE
O
PERA
TI
O
N
IN
T
H
E
AC
TU
A
L
APP
LI
C
A
TI
O
N
. C
O
MP
O
N
E
N
T
S
U
BS
TI
TU
TI
O
N
A
ND
PRINTED CIRCUIT LA
YO
UT MA
Y SIGNIFICANTLY
AFFECT CIRCUIT
PERFORM
ANCE OR
RELIABILIT
Y.
C
O
NTACT LINEAR TECHN
O
LOG
Y APPLICATI
O
NS
EN
G
INEERIN
G
F
O
R
ASSIS
TANCE
.
TECHNO
LO
G
Y
PCB DES
.
APP
E
N
G
.
KEI
TH
B
.
-
3
3RD
PRO
TO
TY
P
E
KEI
TH
B
.
10-13-14
ON
OFF
ON
ON
ON
OFF
OFF
OFF
OFF
ON
HALF
FULL
N/A
E3
VCC
E2
TX
D
E1
RXD
E4
GND
4.5V -
5.5V
A
B
Z
Y
VCC2
T7
DI
A2
RE
A4
VCC2
T6
DE
A3
TE
A1
RO
A5
ON
A7
VL
A6
VCC
B6
Z
T3
B
T4
A
T5
DO
U
T
B1
GND
B2
Y
T2
SLO
T1
DIN
S1
GND2
S2
VCC
B7
GND
B3
GND
B4
GND
B5
GND2
S3
GND2
S4
GND2
S5
GND2
S6
GND2
S7
U1 LT
M
2885IY
DUPL
EX
VCC2
GND2
1
2
3
4
5
6
JP6
1
2
3
4
J1
L1
C4
O
PT
C5
O
PT
L2
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