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.
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
Typical Application
3.3V to 5.0V
3.3V
V
CC
V
CC
A
RO
R
B
120Ω
D
XR3318x
GND
Figure 1. Typical Application
REV1C
XR3319x
GND
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XR
33180
/
81
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83
/
84
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 (V
CC
) ...................................... -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 (V
CC
+ 0.3V)
RO (XR33184) ...................................... -0.3V to (V
L
+ 0.3V)
Receiver Input Voltages
A, B .............................................................................. ±18V
Transient voltage pulse, through 100Ω
(1)
................... ±100V
ESD Ratings
HBM - Human Body Model (A and B pins) ................ ±15kV
HBM - Human Body Model (all other pins) .................. ±4kV
IEC61000-4-2 Air Gap Discharge .............................. ±15kV
IEC61000-4-2 Contact Discharge................................ ±8kV
NOTE:
1. Refer to Figure 3.
Operating Conditions
Operating temperature range ...................... -40°C to 125°C
V
CC
supply range .............................................3.0V to 5.5V
Thermal Information
5-pin TSOT23
θ
JA
............................................... 185.5°C/W
5-pin TSOT23
θ
JC
................................................ 61.6°C/W
6-pin TSOT23
θ
JA
............................................... 167.3°C/W
6-pin TSOT23
θ
JC
................................................ 61.6°C/W
Electrical Characteristics
Specifications are at T
A
= 25°C, V
CC
= 3.0V to 5.5V unless otherwise noted. Typical values represent the most likely
parametric norm at T
A
= 25°C, and are provided for reference purposes only.
Symbol
Supply
V
CC
V
L
I
CC
I
L
Supply voltage range
I/O supply voltage range
Supply current
I/O supply
V
L
≤ V
CC
No Load, XR33180/81/83/84
No Load, XR33184
3.0
1.65
2.5
5.5
V
CC
5
10
V
V
mA
μA
Parameter
Conditions
Min
Typ
Max
Units
Receiver DC Characteristics
V
TH
∆V
OH
R
IN
I
A,B
Receiver differential threshold voltage,
V
A
- V
B
Receiver input hysteresis
Receiver input resistance
Input current, A and B
-7V ≤ V
CM
≤ 12V
V
CM
= 0V
-7V ≤ V
CM
≤ 12V
V
OUT
= 12V, V
CC
= 0V or 5.5V
V
OUT
= -7V, V
CC
= 0V or 5.5V
-200
48
250
-200
-125
25
-50
mV
mV
kΩ
μA
μA
REV1C
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33180
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81
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83
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84
Electrical Characteristics
Specifications are at T
A
= 25°C, V
CC
= 3.0V to 5.5V unless otherwise noted. Typical values represent the most likely
parametric norm at T
A
= 25°C, and are provided for reference purposes only.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Logic Inputs/Outputs
V
IH
V
IL
I
ENLEAK
V
OH
V
OL
V
OH
Logic high input thresholds, EN and EN
Logic low input thresholds, EN and EN
Enable pin leakage
Receiver output high voltage, RO
Receiver output low voltage, RO
Receiver output high voltage, RO
XR33181/83
XR33181/83
XR33181/83
I
OUT
= -4mA, XR33180/81/83
I
OUT
= 4mA, XR33180/81/83
3.0V ≤ V
L
≤ 5.5V, I
OUT
= -4mA
1.65V ≤ V
L
≤ 3.0V, I
OUT
= -1mA,
XR33184
3.0V ≤ V
L
≤ 5.5V, I
OUT
= 4mA
1.65V ≤ V
L
≤ 3.0V, I
OUT
= 1mA,
XR33184
0V ≤ V
RO
≤ V
L
0V ≤ V
OUT
≤ V
CC
, XR33180/81/83
0V ≤ V
OUT
≤ V
L
, XR33184
-120
-1
V
L
- 0.4
-10
V
CC
- 0.4
0.4
2
0.4
10
V
V
μA
V
V
V
V
OL
I
OSC
I
OZR
Receiver output low voltage, RO
Receiver output short-circuit current
High-Z receiver output current
0.4
120
1
V
mA
μA
Thermal Characteristics
T
TS
T
TSH
Thermal shutdown temperature
Thermal shutdown hysteresis
168
15
°C
°C
Receiver AC Characteristics
t
RPLH
t
RPHL
|t
RPLH
- t
RPHL
|
Receiver propagation delay, low to high
Receiver propagation delay, high to low
Receiver propagation delay skew
Propagation delay matching, device to
device
(1)
Maximum data rate
(1)
t
RZH
t
RZL
t
RHZ
t
RLZ
Receiver enable to output high
Receiver enable to output low
Receiver disable from output high
Receiver disable from output low
C
L
= 15pF, R
L
= 1KΩ, Figure 5
Part to part comparisons must have
the same supply conditions and
temperature difference ≤ 30°C (max)
C
L
= 15pF, Duty Cycle 40 to 60%
52
500
500
500
500
C
L
= 15pF, V
ID
= ±2V, V
ID
rise and fall
times <15ns, Figure 4
15
15
2
8
ns
ns
ns
ns
Mbps
ns
ns
ns
ns
NOTE:
1. Guarenteed by design.
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33180
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Pin Configuration
VCC
GND
RO
1
2
3
XR33180
TSOT23-5
5
A
VCC
GND
1
2
3
XR33183
TSOT23-6
6
5
4
A
EN
B
4
B
RO
VCC
GND
RO
1
2
3
XR33181
TSOT23-6
6
5
4
A
EN
B
VCC
GND
RO
1
2
3
XR33184
TSOT23-6
6
5
4
A
VL
B
Pin Functions
Pin Number
Pin Name
XR33180
1
2
3
4
-
Type
Supply
Supply
Output
Bus Input
Input
Description
Power supply, bypass with 0.1μf capacitor
Ground
Receiver output:
if (V
A
-V
B
) ≥ -50mV, RO is high
if (V
A
-V
B
) ≤ -200mV, RO is low
±15KV ESD protected, RS-485/RS-422 inverting receiver input
Receiver output enable:
when EN is low, RO is disabled, high impedance
when EN is high, RO is enabled
Receiver output enable:
when EN is high, RO is disabled, high impedance
when EN is low, RO is enabled
Logic interface power supply
±15KV ESD protected, RS-485/RS-422 non-inverting receiver
input
XR33181
1
2
3
4
5
XR33183
1
2
3
4
-
XR33184
1
2
3
4
-
VCC
GND
RO
B
EN
-
-
5
-
-
6
5
-
6
-
5
6
EN
VL
A
Input
Supply
Bus Input
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33180
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Pin Functions (Continued)
Receiving
Inputs
RE
0
0
0
1
V
A
- V
B
≥ -50mV
≤ -200mV
Open/shorted/idle
X
Output
RO
1
0
1
High-Z
REV1C
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