MAX13413EESA Datasheet, PDF (17/24 Pages) Maxim Integrated Products – RS-485 Transceiver with Integrated Low-Dropout Regulator and AutoDirection Control

RS-485 Transceiver with Integrated Low-Dropout
Regulator and AutoDirection Control
Functional Diagrams
Functional Diagram for the MAX13410E/MAX13411E/MAX13414E/MAX13415E
RO 1
MAX13410E
MAX13411E
+
R
LDO
8 V_CC
RE 2
7B
DE 3
6A
DI 4
D
5 GND
RO 1
MAX13414E
MAX13415E
+
R
LDO
8 V_CC
DE/RE 2
7B
V_REG 3
DI 4
D
6A
5 GND
Functional Diagram for the MAX13412E/MAX13413E
1 RO
MAX13412E
MAX13413E
2 RE
V_REG
LDO
V_REG
+
R
-
RE
V_CC 8
3 _VREG
4
DI
RI STATE
DI ^MACHINE
- V_DT
B7
COM
+
A6
DE
V_REG
D
5
GND
may not be necessary. In these cases, the drive current
can be reduced to minimize the die temperature.
Minimizing the load on the V_REG output lowers the
power dissipation of the part and ultimately reduces the
maximum die temperature.
θ_CA
θ_CA is the thermal resistance from case to ambient and
is independent of the MAX13410E–MAX13415E. θ_CA is
primarily a characteristic of the circuit-board design. The
largest contributing factor of θ_CA will be the size and
weight of the copper connected to the exposed paddle
of the MAX13410E–MAX13415E. Lower the thermal
resistance by using as large a pad as possible.
Additionally, vias can be used to connect the pad to
other ground planes in the circuit board.
Note that θ_JC is the thermal resistance of the part from
junction-to-case temperature and is fixed at 6.0°C/W. It is
solely based on the die and package characteristics of
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