XR33052 Datasheet, PDF (1/18 Pages) Exar Corporation – 60V Fault Tolerant 3.0V to 5.5V RS-485/RS-422 Transceivers

XR33052/53/55/58
±60V Fault Tolerant 3.0V to 5.5V
RS-485/RS-422 Transceivers
Description
The XR33052, XR33053, XR33055, and XR33058 (XR3305x) are
a family of high performance RS-485/RS-422 devices designed for
improved performance in noisy industrial environments and increased
tolerance to system faults.
The analog bus pins can withstand direct shorts up to ±60V and are
protected against ESD events up to ±15kV HBM. An extended ±25V
common mode operating range allows for more reliable operation in
noisy environments.
The XR3305x receivers include full fail-safe circuitry, guaranteeing a
logic-high receiver output when the receiver inputs are open, shorted
or undriven. The XR33052/53/55 receiver input impedance is at least
120kΩ (1/10 unit load), allowing more than 320 devices on the bus.
The XR33058 receiver input impedance is at least 30KΩ (1/2.5 unit
load), allowing more than 80 devices on the bus.
The driver is protected by short circuit detection as well as thermal
shutdown and maintains high impedance in shutdown or when
powered off.
The DE and RE pins include hot swap circuitry to prevent false
transitions on the bus during power up or live insertion and can enter
a 1nA low current shutdown mode for extreme power savings.
The XR33052/55/58 are half-duplex transceivers offered in an
8-pin NSOIC package and operates at a maximum data rates of 250k,
1M and 20Mbps. The XR33053 is a full-duplex transceiver offered in a
14-pin NSOIC package and operates at a maximum data rate of
1 Mbps.
Typical Application
FEATURES
■■ 3.0V to 5.5V operation
■■ ±60V fault tolerance on analog bus pins
■■ Extended ±25V common mode operation
■■ Robust ESD protection:
±15kV HBM (bus pins)
±4kV HBM (non-bus pins)
■■ Enhanced receiver fail-safe protection for
open, shorted or terminated but idle data
lines
■■ Hot swap glitch protection on DE and
RE pins
■■ Driver short circuit current limit and
thermal shutdown for overload protection
■■ Reduced unit loads allows up to 320
devices on bus
■■ Industry standard 8-pin and 14-pin
NSOIC packages
■■ -40°C to 85°C and -40°C to 105°C ambient
operating temperature ranges
APPLICATIONS
■■ Industrial control networks
■■ HVAC networks
■■ Building and process automation
■■ Remote utility meter reading
■■ Energy monitoring and control
■■ Long or unterminated transmission lines
5V
V_CC
DI
DE
R
RE
120Ω
FAULT TOLERANT UP TO 60V
60V POWER BUS
120Ω
5V
V_CC
R
RE
DI
DE
Figure 1. Typical Application
REV2A
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