DC497A - Schematic

5
4
3
2
1
M0
D1
MBR0520LT1
2
1
VCC
C5
10uF
10V,X5R
2
L1
5.6uH
CR43-5R6
3
JP1
JMPR
1
D
D
36
FB
35
3
VIN
SGND
34
4
SHDN
C2+
33
C1
1uF
C3
10V,X5R
1uF
VDD
10V,X5R
5
C1-
C2-
32
C1+
VEE
31
VDD
GND
30
VCC
8
VCC
D1A
29
9
D1
D1B
28
10
D2
D2A
27
11
D3
D2B
26
12
R1
D3/R1A
25
13
R2
D3/R1B
24
VIN
SHDN
E1
1
DTE_TXD/DCE_RXD
E2
C7
1uF
10V,X5R
1
DTE_SCTE/DCE_RXC
E3
1
DTE_TXC/DCE_TXC
E4
C
1
DTE_RXC/DCE_SCTE
E5
1
DTE_RXD/DCE_TXD
M0
C8
1uF
10V,X5R
M1
VIN
M2
C9
1uF
10V,X5R
E6
1
DTE_RTS/DCE_CTS
E7
B
C10
1uF
10V,X5R
1
DTE_DTR/DCE_DSR
E8
1
DTE_DCD/DCE_DCD
E9
1
DTE_DSR/DCE_DTR
E10
1
DTE_CTS/DCE_RTS
E11
1
DTE_LL/DCE_LL
6
7
14
R3
R2A
23
15
M0
R2B
22
16
M1
R3A
21
17
VIN
R3B
20
18
M2
DCE
19
R2
4.3K
1%
1
VDD
2
VCC
VDD
28
GND
27
3
D1
D1A
26
4
D2
D1B
25
5
D3
D2A
24
6
R1
D2B
23
7
R2
D3/R1A
22
8
R3
D3/R1B
21
9
D4
R2A
20
10
R4
R2B
19
M0
11
M0
R3A
18
M1
12
M1
R3B
17
M2
13
M2
D4/R4A
16
DCE
14
DCE
VIN
15
3
JP3
JMPR
1
VEE
3
JP4
JMPR
1
3
JP5
JMPR
1
E32
1
C4
3.3uF
10V,X5R
DTE_TXDA/DCE_RXDA
E31
1
DTE_TXDB/DCE_RXDB
TTL LEVEL
MODE SELECT
DCE
E30
1
DTE_SCTEA/DCE_RXCA
E29
1
DTE_SCTEB/DCE_RXCB
SHDN
E28
1
DTE_TXCA/DCE_TXCA
E27
1
DTE_TXCB/DCE_TXCB
VIN
C
E26
1
DTE_RXCA/DCE_SCTEA
E25
1
DTE_RXCB/DCE_SCTEB
E24
1
DCE
E33
1
DTE_RXDA/DCE_TXDA
E23
1
DTE_RXDB/DCE_TXDB
E22
VEE
JP2
JMPR
1
M2
C2
1uF
10V,X5R
U2
LTC2844CG
VCC
3
2
SW
PGND
2
NC
2
M1
2
1
C6
10uF
10V,X5R
R1
13K
5%
2
U1
LTC2846CG
VEE
1
C11
1uF
10V,X5R
VIN
1
GND
1
VIN
INPUT POWER
J2
DTE_RTSA/DCE_CTSA
GND
E34
E21
1
VIN
J1
1
GND
DTE_RTSB/DCE_CTSB
E20
1
B
DTE_DTRA/DCE_DSRA
E19
1
DTE_DTRB/DCE_DSRB
VDD
E18
1
E35
1
VDD
DTE_DCDA/DCE_DCDA
E17
1
DTE_DCDB/DCE_DCDB
E36
VEE
1
VCC
1
CHARGE PUMP
OUTPUT
VEE
E16
1
DTE_DSRA/DCE_DTRA
E15
1
DTE_DSRB/DCE_DTRB
E14
1
VIN
C12
1uF
10V,X5R
E37
DTE_CTSA/DCE_RTSA
VCC
E13
1
SWITCHER
OUTPUT
DTE_CTSB/DCE_RTSB
E12
1
DTE_LL/DCE_LL
LINEAR TECHNOLOGY CORPORATION
A
1630 McCARTHY BLVD.
MILPITAS, CA. 95035
PHONE 408-432-1900
FAX
408-434-0507
Title
Software-Selectable Multi-Protocal Transceiver
5
NOTES:
4
UNLESS OTHERWISE SPECIFIED
3
2
Size
Document Number
Date:
Thursday, March 07, 2002
DEMO 497A
Rev
LTC2846CG/LTC2844CG
Sheet
1
1
of
1
A
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