DS21354/DS21554 3.3V/5V E1 Single-Chip Transceivers
Figure 15-7. Protected Interface Example for the DS21354
+3.3V
D1
D3
D2
D4
+3.3V
DS21354
2:1
Fuse
Fuse
TTIP
DVDD
Transmit
Line
C2
0.01
0.1
0.1
S
C1
DVSS
TRING
68
+
X1
RVDD
RVSS
1:1
470
Fuse
Fuse
TVDD
TVSS
+
RTIP
0.1
10
Receive
Line
470
RRING
X2
MCLK
2.048MHz
37/60
37/60
0.1
NOTE 1: ALL CAPACITOR VALUES ARE IN ꢀF.
NOTE 2: THE 10ꢀF CAPACITOR ON TVDD IS OF TANTALUM CONSTRUCTION.
NOTE 3: THE 68ꢀF CAPACITOR IS REQUIRED TO MAINTAIN VDD DURING A TRANSIENT EVENT.
COMPONENT
FUNCTION
D1 TO D4
C1
C2
FUSE
S
SCHOTTKY DIODE, INTERNATIONAL RECTIFIER 11DQ04
0.1ꢀF CERAMIC CAPACITOR IN PARALLEL WITH 10ꢀF TANTALUM CAPACITOR
0.47ꢀF, NONPOLARIZED CERAMIC CONSTRUCTION
1.25A SLO-BLO, LITTLEFUSE V2301.25
SEMTECH LC01-6, 6V LOW CAPACITANCE TVS
TRANSPOWER PT314, LOW DCR
X1, X2
88 of 124
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
