MAX13442E Datasheet, PDF (11/18 Pages) Maxim Integrated Products – ±15kV ESD-Protected, ±80V Fault-Protected, Fail-Safe RS-485/J1708 Transceivers

±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
PIN
MAX13442E
MAX13443E
MAX13444E
1
1
2
2
3
—
4
—
5
5
6
6
7
7
8
8
—
3
—
4
NAME
RO
RE
DE
DI
GND
A
B
V_CC
DE
TXD
Pin Description
FUNCTION
Receiver Output. If the receiver is enabled and (A - B) ≥
-50mV, RO = high; if (A - B) ≤ -200mV, RO = low.
Receiver Output Enable. Pull RE low to enable RO.
Driver Output Enable. Force DE high to enable driver. Pull
DE low to tri-state the driver output. Drive RE high and pull
DE low to enter low-power shutdown mode.
Driver Input. A logic low on DI forces the noninverting
output low and the inverting output high. A logic high on
DI forces the noninverting output high and the inverting
output low.
Ground
Noninverting Receiver Input/Driver Output
Inverting Receiver Input/Driver Output
Positive Supply, V_CC = +4.75V to +5.25V. For normal
operation, bypass V_CC to GND with a 0.1µF ceramic
capacitor. For full ESD protection, bypass V_CC to GND with
1µF ceramic capacitor.
Driver Output Enable. Pull DE low to enable the outputs.
Force DE high to tri-state the outputs. Drive RE and DE high
to enter low-power shutdown mode.
J1708 Input. A logic low on TXD forces outputs A and B to
the dominant state. A logic high on TXD forces outputs A
and B to the recessive state.
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