Datasheet

MAX3080E–MAX3089E
±15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
10 ______________________________________________________________________________________
Pin Description
MAX3081E
MAX3084E
MAX3087E
MAX3080E
MAX3083E
MAX3086E
MAX3082E
MAX3085E
MAX3088E
FULL-DUPLEX
DEVICES
HALF-
DUPLEX
MODE
FULL-
DUPLEX
MODE
HALF-
DUPLEX
DEVICES
—95 — Noninverting Driver OutputY9
5
6
7
5
6
7
3
—
4
4
—
5
Driver Input. With DE high, a low on DI forces noninverting
output low and inverting output high. Similarly, a high on DI
forces non-inverting output high and inverting output low.
DI5
Slew-Rate-Limit Selector Pin. Connect SRL to GND for
10Mbps communication rate; connect to V
CC
for
500kbps communication rate. Leave unconnected for
115kbps communication rate.
SRL—
GroundGND6, 7
88— — TXP—
44— 3
Driver Output Enable. Drive DE high to enable driver out-
puts. These outputs are high impedance when DE is low.
Drive RE high and DE low to enter low-power shutdown
mode.
DE4
2
3
1
2
3
1
2
—
—
1
2
—
Receiver Output. When RE is low and if A - B ≥ -50mV,
RO will be high; if A - B ≤ -200mV, RO will be low.
RO2
Receiver Output Enable. Drive RE low to enable RO; RO
is high impedance when RE is high. Drive RE high and
DE low to enter low-power shutdown mode.
RE
3
FUNCTIONNAME
Half/Full-Duplex Selector Pin. Connect H/F to V
CC
for half-
duplex mode; connect to GND or leave unconnected for
full-duplex mode.
H/F
—
Transmitter Phase. Connect TXP to GND, or leave floating
for normal transmitter phase/polarity. Connect to V
CC
to
invert the transmitter phase/polarity.
— — — — 9 Y
Noninverting Receiver Input and Noninverting Driver
Output*
10 6 — 10 — Z Inverting Driver Output
— — — — 10 Z Inverting Receiver Input and Inverting Driver Output*
11 7 — 11 — B Inverting Receiver Input
—
—
— — — 11 B Receiver Input Resistors*
— 7 — — B Inverting Receiver Input and Inverting Driver Output
MAX3089E
PIN