DS_2901CE_031
73M2901CE Data Sheet
7 Reference Designs
7.1 Low Cost Design Using DSP Ring and Status Monitoring
11.0592 MHz
C3
VCC3_3D
C2
27pF
VCC3_3D
Y1
33pF
C13
C14
C11
0.1uF
C12
3.3uF
+
+
3.3uF
0.1uF
R17
475
TXD
HYBRID1
U1
R15
73M2901CE
5.1K
C4
56nF
25
26
27
28
29
30
31
32
16
15
14
13
12
11
10
9
VPD
R XD
RXCLK
DTR
USR20
RING
RELAY
RI
VNA
R XA
VBG
VREF
TXAP
TXAN
VPA
R XD
R2
2.7K
R13
21K
DTRB
HYBRID2
VCC3_3D
RIB
VCC3_3A
C10
RESET
C7
C8
C9
R20
27K
+
0.1uF
0.1uF
10uF
0.1uF
DCDB
DSRB
DETECT
LIUCHK
HOOKB
CTSB
RTSB
R18 100
R16 100
VCC3_3D
C1 10uF
R1
10K
C5
3.3uF
C6
+
0.1uF
T1
Sumida
MIT4115
L1
NLC322522T-4R7M
3
2
1
HYBRID1
HYBRID2
4
E1
TISP4350T3BJR
Bourns
Thy ristor
F1
+
-
1
2
MF-R015/600
Bourns
VCC3_3D
PTC fuse
BR1
CBRHD-04
J2
U2
TLP627
L2
4
3
2
1
R9
C19
NLC322522T-4R7M
63K
0.22uF
250V
RJ-11
HOOKB
ISOLATION BARRIER
Figure 3: Low Cost Design Using DSP Ring and Status Monitoring
Rev. 3.3
15