XR33202 Datasheet, PDF (1/7 Pages) Exar Corporation – Wide Supply TIA-485/TIA-422 Transceiver

XR33202
Wide Supply TIA-485/TIA-422 Transceiver
with 1.65V-5.5V I/O Interface
Description
The XR33202 is a high performance TIA-485/TIA-422 transceiver
designed to meet the increasing system requirements found in
today’s portable/handheld, process control and industrial equipment
environments. This is a wide supply (3.0V to 5.5V) device that operates
at maximum data rate of 20Mbps and features a 1.65V to 5.5V I/O logic
supply, simplifying multi-voltage system interfacing requirements.
The receiver includes full fail-safe circuitry, guaranteeing a logic-
high receiver output when the receiver inputs are open, shorted or
undriven. The XR33202 receiver input impedance is at least 96kΩ
(1/8 unit load), allowing more than 256 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 XR33202 does not have slew limiting and is intended
for high speed applications requiring data rates up to 20Mbps.
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 1µA low current shutdown mode for extreme power savings.
The XR33202 is a half-duplex device that operates at max data rates
of 20Mbps. It is available in a 10-pin DFN package.
FEATURES
■■ Wide 3.0V to 5.5V supply operation
■■ 1.65V to 5.5V I/O logic interface VL pin
■■ Enhanced receiver fail-safe protection for
open, shorted or terminated but idle
data lines
■■ Hot swap glitch protection on DE and
RE Pins
■■ Robust ESD (Electrostatic Discharge)
protection for TIA-485 bus pins
±15kV human body model
±15kV IEC61000-4-2 air discharge
±8kV IEC61000-4-2
contact discharge
■■ Driver short circuit limit and thermal
shutdown for overload protection
■■ -40°C to 125°C ambient operating
temperature range
■■ Lead-free (RoHS 6) DFN
APPLICATIONS
■■ Portable and handheld equipment
■■ Industrial and process control equipment
■■ Point-of-sale equipment
■■ Building security and automation
Typical Application
2.5V
V_CC
TX
UART
RX
2.5V 3.3V
V_L
DI
DE
R
RE
V_CC
120Ω
3.3V 1.8V
V_CC
120Ω
V_L
DI
DE
R
RE
1.8V
V_CC
TX _MICRO
RX _PROCESSOR
Figure 1. Typical Application
REV1A
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