XR33152_17 Datasheet, PDF (9/21 Pages) Exar Corporation – 60V Fault Tolerant 3.0V to 5.5V RS-485/RS-422 Transceivers

Pin Configurations
RO 1
INV 2
DE 3
DI 4
XR33152/XR33155/XR33156/XR33158
8 VCC
7 B/Z
6 A/Y
5 GND
RINV 1
RO 2
RE 3
DE 4
DI 5
GND 6
GND 7
14 VCC
13 VL
12 A
11 B
10 Z
9Y
8 DINV
XR33152, XR33155 and XR33158 Half-duplex
XR33156 Full-duplex
Pin Functions
Pin Number
Half-duplex
XR33152
XR33155
XR33158
Full-duplex
XR33156
-
1
1
2
2
-
-
3
3
4
4
5
5
6, 7
6
-
7
-
Pin Name
RINV
RO
INV
RE
DE
DI
GND
A/Y
B/Z
Type Description
I
O
I
I
I
I
PWR
Receiver invert control (active high). When enabled, the polarity of the receiver bus
pins (A & B) is reversed: A = inverting and B = non-inverting. When disabled, the
receiver bus pins (A & B) operate normally: A = non-inverting and B = inverting.
The R_INV pin has a 150KΩ pull-down resistor.
Receiver output, when RE is low and if (A-B) ≥ 200mV, RO is high. If (A-B) ≤ -200mV,
RO is low If inputs are left floating, shorted together or terminated and undriven for
more than 2μs the output is high.
Driver and receiver invert control (active high). When enabled, the polarity of the driver
input and receiver input bus pins is inverted. When disabled, the driver input and
receiver inputs operate normally: A = non-inverting and B = inverting. The INV pin has
a 150kΩ pull-down resistor.
Receiver output enable (hot swap). When RE is low, RO is enabled. When RE is high,
RO is high impedance. RE should be high and DE should be low to enter
shutdown mode.
Driver output enable (hot swap). When DE is high, outputs are enabled. When DE is
low, outputs are high impedance. DE should be low and RE should be high to enter
shutdown mode.
Driver input. With DE high, a low level on DI forces non-inverting output low and
inverting output high. Similarly, a high level on DI forces non-inverting output high and
inverting output low.
Ground.
I/O Non-inverting receiver input and non-Inverting driver output.
I/O Inverting receiver input and Inverting driver output.
NOTE:
Type: I = Input, O = Output, I/O = Input/Output, PWR = Power.
REV2B
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