Document
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 VL supply pin allows the XR33184 to interface to other devices running off of supplies from ranging from 1.65V to VCC.
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
VCC
RO R
XR3318x GND
A 120Ω B
Figure 1. Typical Application
REV1A
VCC
D XR3319x GND
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Absolute Maximum Ratings
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Maximum Rating condition for extended periods may affect device reliability and lifetime.
Supply voltage (VCC)....................................... -0.3V to 7.0V Junction temperature.................................................. 150°C
Input Voltages
EN and EN....................................................... -0.3V to 7.0V
Output Voltage
RO (XR33180/81/83).......................... -0.3V to (VCC + 0.3V) RO (XR33184)....................................... -0.3V to (VL + 0.3V) Receiver Input Voltages
A, B............................................................................... ±18V
Transient voltage pulse, through 100Ω (1)................... ±100V
NOTE: 1. Refer to Figure 3.
Operating Conditions
Operating temperature range....................... -40°C to 125°C VCC supply range..............................................3.0V to 5.5V Thermal Information
5-pin TSOT23 θJA............................................... 185.5°C/W 5-pin TSOT23 θJC................................................. 61.6°C/W 6-pin TSOT23 θJA............................................... 167.3°C/W 6-pin TSOT23 θJC................................................. 61.6°C/W
Electrical Characteristics
Specifications are at TA = 25°C, VCC = 3.0V to 5.5V unless otherwise noted. Typical values represent the most likely parametric norm at TA = 25°C, and are provided for reference purposes only.
Symbol Parameter
Conditions
Min Typ Max Units
Supply
VCC Supply voltage range
VL I/O supply voltage range
ICC Supply current
IL I/O supply Receiver DC Characteristics
VTH ∆VOH
Receiver differential threshold voltage, VA - VB
Receiver input hysteresis
RIN Receiver input resistance
IA,B Input current, A and B
VL ≤ VCC No Load, XR33180/81/83/84 No Load, XR33184
-7V ≤ VCM ≤ 12V VCM = 0V -7V ≤ VCM ≤ 12V VOUT = 12V, VCC = 0V or 5.5V VOUT = -7V, VCC = 0V or 5.5V
3.0 5.5 V
1.65
VCC
V
2.5 5 mA
10 μA
-200 48 -200
-125 25
-50 250
mV
mV kΩ μA μA
REV1A
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Electrical Characteristics
Specifications are at TA = 25°C, VCC = 3.0V to 5.5V unless otherwise noted. Typical values represent the most .