XR33180 Datasheet, PDF (1/12 Pages) Exar Corporation – Receivers with ±15kV ESD Protection

XR33180/81/83/84
3V to 5.5V, 52Mbps, TSOT23 RS-485/RS-422
Receivers with ±15kV ESD Protection
Description
The XR33180, XR33181, XR33183 and XR33184 are high performance
RS-485/RS-422 receivers designed to meet the increasing system
requirements found in today’s high performance serial communication
applications.
The receiver includes enhanced failsafe circuitry, guaranteeing
a logic-high receiver output when the receiver inputs are open,
shorted, or undriven. The XR33180/81/83/84 (XR3318x) receiver
input impedance is at least 48kΩ (1/4 unit load), allowing more than
128 devices on the bus. The bus pins are ESD protected and pass
IEC61000 level 4 (±15kV).
This is a wide supply (3.0V to 5.5V) device that operates at a maximum
data rate of 52Mbps and comes in very small 5-pin and 6-pin TSOT23
packages, making this standalone receiver ideal for high speed
point-to-point RS-485 applications where space is a concern.
The XR3318x offers several pinout options to maximize performance
in different applications while maintaining a minimum pin count. The
XR33180 is available in a 5-pin TSOT23 package with the receiver
always enabled. The XR33181 is available in a 6-pin TSOT23 package
and offers a active high receiver enable pin while the XR33183 has the
same pinout but with active low enable pin. The XR33184 is available
in a 6-pin TSOT23 package with a I/O logic supply pin to ease the
interface to MCU’s or FPGA’s that run off of different supply voltages.
The V_L supply pin allows the XR33184 to interface to other devices
running off of supplies from ranging from 1.65V to V_CC.
All XR3318x options operate up to a max data rate of 52Mbps, and
have excellent propagation delay and skew characteristics making
them a good choice for clock fanout or clock distribution systems.
Typical Application
3.3V to 5.0V
FEATURES
■■ Max 52Mbps data rate
■■ Wide 3.0V to 5.5V supply operation
■■ Robust Electrostatic Discharge (ESD)
protection for RS-485 bus pins
±15kV human body model
±15kV IEC61000-4-2 air discharge
±8kV IEC61000-4-2 contact
discharge
■■ _{Enhanced receiver failsafe protection for}
open, shorted, or terminated but idle data
lines
■■ -40°C to 125°C ambient operating
temperature range
■■ Lead-free (RoHS 6) TSOT23-5 and
TSOT23-6 packaging
■■ Absolute minimum pin count option,
XR33180 (5-pin TSOT23)
■■ Tri-state RO options, XR33181 and
XR33183
■■ Adjustable I/O supply option to help
interfacing to lower voltage logic, XR33184
APPLICATIONS
■■ Clock distribution
■■ Robotic control
■■ Space constrained systems
■■ Security camera networks
■■ Industrial and process control equipment
3.3V
V_CC
V_CC
RO
R
XR3318x
GND
A 120Ω
B
D
XR3319x
GND
Figure 1. Typical Application
REV1A
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