MAX13410E_09 Datasheet, PDF (14/24 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
MAX13410E/
MAX13411E
PIN
MAX13412E/
MAX13413E
MAX13414E/
MAX13415E
1
—
1
2
—
—
3
—
—
4
4
4
5
5
5
6
6
6
7
7
7
8
8
8
—
1
—
—
2
—
—
3
3
—
—
2
EP
EP
EP
Pin Description
NAME
FUNCTION
RO
RE
DE
DI
GND
A
B
V_CC
RO
RE
V_REG
DE/RE
EP
Receiver Output. When receiver is enabled and V_A - V_B ≥ -50mV,
RO is high. If V_A - V_B ≤ -200mV, RO is low. Note: RO is referenced to
the LDO output (V_REG).
Receiver Output Enable. Drive RE low to enable RO. Drive RE high to
disable the RO output and put the RO output in a high-impedance
state.
Driver Output Enable. Drive DE low to put the driver output in three-state.
Drive DE high to enable the driver.
Driver Input. Drive DI low to force the noninverting output low and the
inverting output high. Drive DI high to force the noninverting output
high and inverting output low. DI is an input to the internal state
machine that automatically enables and disables the driver (for the
MAX13412E/MAX13413E). See the function tables and General
Description for more information.
Ground
Noninverting Receiver Input and Noninverting Driver Output
Inverting Receiver Input and Inverting Driver Output
Positive Supply. Bypass V_CC with a 0.1µF ceramic capacitor to GND.
Receiver Output. When receiver is enabled and V_A - V_B ≥ -100mV,
RO is high. If V_A - V_B ≤ -100mV, RO is low. Note: RO is referenced to
the LDO output (V_REG).
Receiver Output Enable. Drive RE low to force the RO output to be
enabled. Drive RE high to let the AutoDirection circuit control RO.
LDO Output. V_REG is fixed at +5V. Bypass V_REG with a low ESR
(20mΩ or less) and a 1µF (min) ceramic capacitor.
Receiver and Driver Output Enable. Drive DE/RE low to enable RO
and disable the driver. Drive DE/RE high to disable RO and enable
the driver.
Exposed Pad. EP is internally connected to GND. For enhanced
thermal dissipation, connect EP to a copper area as large as
possible. Do not use EP as a sole ground connection.
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