3.3V, 20Mbps, TSOT23 RS-485/RS-422
Transmitters with ±15kV ESD Protection
XR33193/XR33194/XR33195
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FEATURES
Date rate options of 250kbps, 2.5Mbps
and 20Mbps
Tiny 6-pin TSOT23 package
3.3V ±5% supply operation
Robust ESD protection
±15kV Human Body Model (bus pins)
±4kV Human Body Model (all other
pins)
Short-circuit protection
Thermal protection circuitry
Hot swap glitch protection
Extended -40°C to 125°C operating
temperature range
Low current shutdown mode (2uA max)
Lead-free (RoHS compliant)
APPLICATIONS
Clock distribution
Robotic control
Space constrained systems
Security camera networks
Industrial and process control equipment
Description
The XR33193, XR33194, and XR33195 are a high performance
RS-485/RS-422 driver family offered in a tiny TSOT23 package
designed to meet the increasing system requirements found in today’s
performance serial communication applications. These standalone
drivers operate off a single 3.3V supply and meet RS-485 and RS-422
standards for balanced RS-485 and RS-422 serial communications
networks.
The driver family offers several speed options to maximize performance
in different applications. The XR33193 and XR33194 have slew limited
outputs for reduced EMI and for error free communication over long
or improper/unterminated data cables or multi-drop applications with
unterminated stubs. The XR33195 driver operates at data rates up to
20Mbps with tight skew and prop delay spec’s required by demanding
high speed applications. All parts in the XR33193/94/95 driver family
operate over the extended temperature range of -40°C to 125°C.
The XR33193/94/95 driver family is protected by short-circuit detection
as well as thermal shutdown and will maintain a high impedance state
in shutdown or when powered off. The driver family also includes hot
swap circuitry to protect against false transitions on the bus during
power-up or live insertion.
For companion standalone RS-485/RS-422 receivers in tiny TSOT23
packages see our XR33180/81/83/84 product datasheet.
Typical Application
Figure 1. Typical Application
VCC
3.3V
RO
120Ω
GND
R
A
B
XR3318x
VCC
3.3V
GND
D
XR33193/94/95
DI
DE
Y
Z
Ordering Information – back page
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Absolute Maximum Ratings
Stresses beyond the limits listed below may cause
permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect
device reliability and lifetime.
Supply voltage (VCC) ...................................... -0.3V to 7.0V
Maximum junction temperature ................................. 150°C
Input voltages, DI and DE ............................... -0.3V to 7.0V
Bus output voltages Y and Z .......................................±18V
Transient voltage pulse through 100Ω, Figure 7 .......±100V
ESD Ratings
HBM - Human Body Model (Y and Z pins) ................ ±15kV
HBM - Human Body Model (all other pins) .................. ±4kV
Operating Conditions
Operating temperature range ...................... -40°C to 125°C
VCC supply range .....................................3.135V to 3.465V
Storage temperature range ......................... -65°C to 150°C
Lead temperature (soldering, 10s) ............................ 300°C
Thermal Information
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 = 3.3V ± 5% 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 3.135 3.465 V
ICC Supply current No load (DE = VCC, DI = 0V) 0.18 0.375 mA
ISNDN Supply current in shutdown mode No load (DE = 0V) 0.5 2 µA
Logic Inputs/Outputs
VIH Logic high input thresholds DI and DE 2 V
VIL Logic high input thresholds DI and DE 0.8 V
IIN Input current DI and DE -2 2 µA
Driver DC Characteristics
VOD Differential driver voltage
No load 3 V
RL = 100Ω (RS-422), Figure 4 2 V
RL = 54Ω (RS-485), Figure 4 1.5 V
-7V ≤ VCM ≤ 12V, Figure 5 1.5 V
∆VOD Change in magnitude of differential
driver output voltage
RL = 54Ω (RS-485) or 100Ω (RS-422),
DE = VCC, Figure 4 ±0.2 V
VCM Driver common-mode output voltage
(steady state)
RL = 54Ω (RS-485) or 100Ω (RS-422),
DE = VCC, DI = VCC or GND, Figure 4 -1 VCC/2 3 V
∆VCM Change in magnitude of driver common-
mode output voltage RL = 54Ω (RS-485) or 100Ω (RS-422) 0.2 V
VOL Output leakage
Y and Z, VOUT = 12V, DE = 0V,
VCC = 3.3V or GND -20 20 µA
Y and Z, VOUT = -7V, DE = 0V,
VCC = 3.3V or GND -20 20 µA
IOSD Driver short-circuit output current -7V ≤ VOUT ≤ 12V, Figure 6 ±250 mA
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Electrical Characteristics (Continued)
Specifications are at TA = 25°C, VCC = 3.3V ± 5% 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
Thermal Characteristics
TTS Thermal shutdown temperature 165 °C
TTSH Thermal shutdown hysteresis 40 °C
Driver AC Characteristics XR33193 (250kbps)
tDPLH Driver propagation delay (low to high)
CL = 50pF, RL = 54Ω, Figure 8
400 1300 ns
tDPHL Driver propagation delay (high to low) 400 1300 ns
tSKEW Driver propagation delay skew, |tDPLH-tDPHL| 400 ns
tR, tFDifferential output rise or fall time CL = 50pF, RL = 54Ω, Figure 8 400 1200 ns
Device to device propagation delay
matching(1)
Same power supply, maximum temperature
difference between devices = 30°C 900 ns
Maximum data rate CL = 50pF, RL = 54Ω, duty cycle 40 to 60% 250 kbps
tDZH Driver enable to output high
CL = 100pF, RL = 500Ω, Figure 9
2000 ns
tDZL Driver enable to output low 2000 ns
tDHZ Driver disable from output high 1000 ns
tDLZ Driver disable from output low 1000 ns
Driver AC Characteristics XR33194 (2.5Mbps)
tDPLH Driver propagation delay (low to high)
CL = 50pF, RL = 54Ω, Figure 8
24 70 ns
tDPHL Driver propagation delay (high to low) 24 70 ns
tSKEW Driver propagation delay skew, |tDPLH-tDPHL| 40 ns
tR, tFDifferential output rise or fall time CL = 50pF, RL = 54Ω, Figure 8 10 70 ns
Device to device propagation delay
matching(1)
Same power supply, maximum temperature
difference between devices = 30°C 46 ns
Maximum data rate CL = 50pF, RL = 54Ω, duty cycle 40 to 60% 2.5 Mbps
tDZH Driver enable to output high
CL = 100pF, RL = 500Ω, Figure 9
400 ns
tDZL Driver enable to output low 400 ns
tDHZ Driver disable from output high 100 ns
tDLZ Driver disable from output low 100 ns
NOTE:
1. Guaranteed by design; not production tested.
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Electrical Characteristics (Continued)
Specifications are at TA = 25°C, VCC = 3.3V ± 5% 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
Driver AC Characteristics XR33195 (20Mbps)
tDPLH Driver propagation delay (low to high)
CL = 15pF, RL = 54Ω, Figure 8
25 ns
tDPHL Driver propagation delay (high to low) 25 ns
tSKEW Driver propagation delay skew, |tDPLH-tDPHL| 5 ns
tR, tFDifferential output rise or fall time
TA = -40°C to 125°C, CL = 50pF, RL = 54Ω,
Figure 8 18.5 ns
TA ≤ 85°C, CL = 50pF, RL = 54Ω, Figure 8 15 ns
Device to device propagation delay
matching(1)
Same power supply, maximum temperature
difference between devices = 30°C 25 ns
Maximum data rate TA ≤ 85°C, CL = 50pF, RL = 54Ω,
duty cycle 40 to 60% 20 Mbps
Maximum data rate CL = 50pF, RL = 54Ω, duty cycle 40 to 60% 16 Mbps
tDZH Driver enable to output high
CL = 100pF, RL = 500Ω, Figure 9
400 ns
tDZL Driver enable to output low 400 ns
tDHZ Driver disable from output high 100 ns
tDLZ Driver disable from output low 100 ns
NOTE:
1. Guaranteed by design; not production tested.
XR33193/XR33194/XR33195
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Pin Configuration
Pin Functions
Pin Number Pin Name Type Description
XR33193 XR33194 XR33195
1 1 1 DI Input Driver input. A low on DI forces the Y output low and the Z output high.
A high on DI forces the Y output high and the Z output low.
2 2 2 VCC Supply Power supply (VCC = 3.3V ± 5%). Bypass with 0.1µF capacitor to ground.
3 3 3 DE Input
Driver output enable. A high on DE enables the driver outputs (Y and
Z). A low on DE will disable the driver outputs (Y and Z), tri-stating the
outputs and putting the device into shutdown (low power) state.
The hot swap function is implemented on the DE pin, see Applications
Information section for a description of hot swap function.
4 4 4 Z Bus Output ±15kV ESD protected, RS-485/RS-422 inverting driver output.
5 5 5 GND Supply Ground.
6 6 6 Y Supply ±15kV ESD protected, RS-485/RS-422 non-inverting driver output.
DE Z
Y
VCC
1
2
6
XR33193
XR33194
XR33195
DI
4
3
GND
5
TSOT23-6, Top View
XR33193/XR33194/XR33195
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Functional Block Diagram
Figure 2. Functional Block Diagram
Z
VCC
DI
DE
Y
XR3319x
Applications Information
The XR3319x RS-485/RS-422 devices are part of MaxLinear’s
high performance serial interface product line. These
standalone drivers operate off a single 3.3V supply and meet
RS-485 and RS-422 standards for balanced RS-485 and RS-
422 serial communications networks.
Hot Swap Capability
When VCC is first applied the XR3319x family holds the
driver enable inactive for approximately 10μs. During power
ramp-up, other system ICs may drive unpredictable values or
tristated lines may be influenced by stray capacitance. The hot
swap feature prevents the XR3319x family from driving any
output signal until power has stabilized. After the initial 10μs,
the driver enable pin is weakly pulled to the disabled state(low
for DE) until the first transition. After the first transition, the DE
pin operate as high impedance input.
If circuit boards are inserted into an energized backplane
(commonly called “live insertion” or “hot swap”) power
may suddenly be applied to all circuits. Without the hot
swap capability, this situation could improperly enable the
transceiver’s driver, driving invalid data onto shared buses
and possibly causing driver contention or device damage.
Driver Output Protection
Two mechanisms prevent excessive output current and power
dissipation caused by faults or by bus contention. First, a driver
current limit on the output stage provides immediate protection
against short circuits over the whole common-mode voltage
range. Second, a thermal shutdown circuit forces the driver
outputs into a high impedance state if junction temperature
becomes excessive.
Line Length
The RS-485/RS-422 standard covers line lengths up to
4000ft. Maximum achievable line length is a function of
signal attenuation and noise. Termination prevents signal
reflections by eliminating the impedance mismatches on
a transmission line. Line termination is generally used if
rise and fall times are shorter than the round trip signal
propagation time. Higher output drivers may allow longer
cables to be used.
±15kV HBM ESD Protection (Unpowered Part)
ESD protection structures are incorporated on all pins to
protect against electrostatic discharges encountered during
handling and assembly. The driver outputs of the XR3319x
family have extra protection against static electricity.
MaxLinear uses state-of-the-art structures to protect these
pins against ESD damage:
±15kV HBM for bus pins to GND
±4kV HBM for all other pins
ESD Test Conditions
ESD performance depends on a variety of conditions.
Contact MaxLinear for a reliability report that documents
test setup, methodology and results.
Low Power Shutdown Mode
The XR3319x has a low-power shutdown mode that is
initiated by bringing DE low (to disable the XR33193/94/95).
While in shutdown the XR3319x draws less than 2μA of
supply current.
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Applications Information (Continued)
Product Selector Guide
Part Number Data Rate (Mbps) Slew-Rate Limited Package
XR33193 0.25 Yes
6-pin TSOT23XR33194 2.5 Yes
XR33195 20 No
DE Z
Y
VCC
1
2
6
DI
4
3
GND
5
D
Figure 3. Differential Driver
DDI = OV or VCC
DE = VCC
Y
Z
RL
2
VOD VCM
RL
2
Figure 4. Differential Driver Output Voltage
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Applications Information (Continued)
DDI = OV or VCC
DE = VCC
Y
Z
375Ω
375Ω
60Ω
VOD VCM
Figure 5. Differential Driver Output Voltage Over Common Mode
DDI = OV or VCC
DE = OV or VCC
Y-7V to 12V
ZIOSD
V
Figure 6. Driver Output Short-Circuit Current
DEVICE POWERED
ON/OFF
Z
Y
VTEST
15μs DURATION
1% DUTY CYCLE
100Ω
DRIVER
Figure 7. Transient Overvoltage Test Circuit
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Applications Information (Continued)
D VOD RLCL
Y
Z
DE = VCC
DI
Z
Y
DI 1.5V 1.5V
tSKEW = tDPLH – tDPHL
VOD
(VY - VZ)
3V
10% 90% 10%
90%
tDF
tDR
tDPLH tDPHL
OV
OV
VOD
VOD–
VOD+
Figure 8. Driver Propagation Delay Test Circuit and Timing Diagram
XR33193/XR33194/XR33195
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Applications Information (Continued)
DVOUT
RLCL
DE
TESTING Z: DI = OV
TESTING Y: DI = VCC Y
Z
DVOUT
RL
VCC
CL
DE
TESTING Z: DI = VCC
TESTING Y: DI = OV Y
Z
VOUT
DE 1.5V 1.5V
3V
tDZH
VOH + VOL VOH – 0.25V
2
tDHZ
OV
VOH
VOL
VOUT
DE 1.5V 1.5V
3V
tDZL
VOH + VOL
VOL + 0.25V
2
tDLZ
OV
VOH
VOL
Figure 9. Driver Enable and Disable Timing Test Circuits and Timing Diagrams
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Mechanical Dimensions
TSOT23-6
1. AlldimensionsareinMillimeters
2. DimensionsandtoleranceperJedecMO‐193
Drawing No. : POD - 00000077
Revision: A.1
SIDEVIEW‐1
TOP VIEW
DETAIL
TYPICAL RECOMMENDEDLANDPATTERN
SIDE VIEW‐ 2
The content of this document is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by MaxLinear, Inc.. MaxLinear, Inc. assumes
no responsibility or liability for any errors or inaccuracies that may appear in the informational content contained in this guide. Complying with all applicable copyright laws is the responsibility of the
user. Without limiting the rights under copyright, no part of this document may be reproduced into, stored in, or introduced into a retrieval system, or transmitted in any form or by any means (electronic,
mechanical, photocopying, recording, or otherwise), or for any purpose, without the express written permission of MaxLinear, Inc.
Maxlinear, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support
system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless MaxLinear, Inc. receives, in writing, assurances to its satisfaction that: (a) the
risk of injury or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of MaxLinear, Inc. is adequately protected under the circumstances.
MaxLinear, Inc. may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document. Except as expressly provided in any written
license agreement from MaxLinear, Inc., the furnishing of this document does not give you any license to these patents, trademarks, copyrights, or other intellectual property.
Company and product names may be registered trademarks or trademarks of the respective owners with which they are associated.
© 2016 - 2018 MaxLinear, Inc. All rights reserved
XR33193/94/95_DS_020118
XR33193/XR33194/XR33195
12/12
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Corporate Headquarters:
5966 La Place Court
Suite 100
Carlsbad, CA 92008
Tel.:+1 (760) 692-0711
Fax: +1 (760) 444-8598
www.maxlinear.com
High Performance Analog:
1060 Rincon Circle
San Jose, CA 95131
Tel.: +1 (669) 265-6100
Fax: +1 (669) 265-6101
Email: serialtechsupport@exar.com
www.exar.com
Ordering Information(1)
Part Number Speed
(Mbps)
Slew Rate
Limited
Operating
Temperature Range Lead-Free Package Packaging Method
XR33193ESBTR 0.250 Yes
-40°C to 125°C Yes(2) 6-pin TSOT23 Tape and ReelXR33194ESBTR 2.50 Yes
XR33195ESBTR 20 No
XR33193ESBEVB
Evaluation boardXR33194ESBEVB
XR33195ESBEVB
NOTE:
1. Refer to www.exar.com/XR33193, www.exar.com/XR33194, www.exar.com/XR33195 for most up-to-date Ordering Information.
2. Visit www.exar.com for additional information on Environmental Rating.
Revision History
Revision Date Description
1A July 2016 Initial release.
1B February 2018 Update to MaxLinear logo. Update format and Ordering Information format. Moved ESD
ratings to page 2.
