XR33152/XR33155/XR33156/XR33158
±60V Fault Tolerant 3.0V to 5.5V
RS-485/RS-422 Transceivers
Description
The XR33152, XR33155, XR33156 and XR33158 (XR3315x) family of
high performance RS-485/RS-422 devices are designed for improved
performance in noisy industrial environments and increased tolerance
to system faults.
The analog bus pins can withstand direct shorts up to ±60V and are
protected against ESD events up to ±15kV HBM. An extended ±25V
common mode operating range allows for more reliable operation in
noisy environments.
The XR3315x receivers include full fail-safe circuitry, guaranteeing a
logic high receiver output when the receiver inputs are open, shorted
or undriven. The XR33152/55 receiver input impedance is at least
120kΩ (1/10 unit load), allowing more than 320 devices on the bus.
The XR33156/58 receiver input impedance is at least 30kΩ (1/2.5
unit load), allowing more than 80 devices on the bus.
The drivers are protected by short circuit detection as well as thermal
shutdown and maintain high impedance in shutdown or when powered
off. The XR33152 driver is slew limited for reduced EMI and error-free
communication over long or unterminated data cables.
The XR3315x family of high performance RS-485/RS-422 devices are
designed for improved performance in noisy industrial environments
and increased tolerance to system faults.
The devices with 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 1nA low current shutdown mode for extreme power savings.
FEATURES
■■ 3.0V to 5.5V operation
■■ ±60V fault tolerance on analog bus pins
■■ Extended ±25V common mode operation
■■ Robust ESD protection:
±15kV HBM (bus pins)
± 4kV HBM (non-bus pins)
■■ 1.65V to 5.5V logic Interface VL pin
(full-duplex package option)
■■ Invert control to correct for reversed
bus pins
■■ Enhanced receiver fail-safe protection for
open, shorted or terminated but idle
data lines
■■ Hot swap glitch protection on DE and
RE pins
■■ Driver short-circuit current limit and
thermal shutdown for overload protection
■■ Reduced unit loads allows up to 320
devices on bus
■■ Industry standard 8-pin and 14-pin
NSOIC packages
■■ -40°C to 85°C and -40°C to 105°C ambient
operating temperature ranges
APPLICATIONS
■■ Industrial control networks
■■ HVAC networks
■■ Building and process automation
■■ Remote utility meter reading
■■ Energy monitoring and control
■■ Long or unterminated transmission lines
Ordering Information - Page 20
Typical Application
FAULT TOLERANT UP TO 60V
5V
DI
60V POWER BUS
VCC
5V
VCC
R
DE
RE
R
DI
RE
DE
Figure 1. Typical Application
REV2C
1/21
XR33152/XR33155/XR33156/XR33158
Absolute Maximum Ratings
Operating Conditions
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 range.........................................3.0V to 5.5V
VCC...................................................................................-0.3V to 7.0V
VL............................................................................VL ≤ VCC
Input voltage at control and driver input (DE, DI and INV)
XR33152/55/58................................... -0.3V to (VCC + 0.3V)
Operating temperature range....................... -40°C to 105°C
Package power dissipation,
8-pin NSOIC θJA.................................................. 128.4°C/W
Package power dissipation,
14-pin NSOIC θJA..................................................... 86°C/W
Receiver output voltage (RO)
XR33152/55/58................................... -0.3V to (VCC + 0.3V)
Input voltage at control (RE) XR33156
.............................................................. -0.3V to (VL + 0.3V)
Input voltage at control and driver input
(DE, DI, RINV, DINV, and INV) XR33156.......... -0.3V to 7.0V
Receiver output voltage (RO)
XR33156................................................ -0.3V to (VL + 0.3V)
Driver output voltage (Y, Z, A/Y and B/Z)..................... ±60V
Receiver input voltage (A, B, A/Y and B/Z).................. ±60V
Transient voltage pulse, through 100Ω (Figure 7)...... ±100V
Driver output current................................................ ±250mA
Storage temperature range.......................... -65°C to 150°C
Lead temperature (soldering 10 seconds).................. 300°C
Maximum junction temperature.................................. 150°C
ESD Ratings
HBM - Human Body Model (A, B, Y and Z pins)........ ±15kV
HBM - Human Body Model (all other pins)................... ±4kV
REV2C
2/21
XR33152/XR33155/XR33156/XR33158
Electrical Characteristics
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
3.0
5.5
V
1.65
5.5
V
RL = 100Ω (RS-422), Figure 4
2
VCC
V
RL = 54Ω (RS-485), Figure 4
1.5
VCC
V
-25V ≤ VCM ≤ 25V, Figure 5
1.5
VCC
V
RL = 100Ω (RS-422), Figure 4
0.85
VCC
V
RL = 54Ω (RS-485), Figure 4
0.65
VCC
V
±0.2
V
3
V
±0.2
V
Driver DC Characteristics
VCC
Supply voltage range
VL
I/O logic supply voltage range
VOD
Differential driver output,
4.5V ≤ VCC ≤ 5.5V
VL ≤ VCC
VOD
Differential driver output,
3.0V ≤ VCC ≤ 4.5V
∆VOD
Change in magnitude of
differential output voltage, Note 1
VCM
Driver common-mode output
voltage (steady state)
∆VCM
Change in magnitude of common-mode
output voltage, Note 1
VIH
Logic high input thresholds
(DI, DE and INV)
VIL
Logic low input thresholds
(DI, DE and INV)
For XR33152/55/58
VIH
Logic high input thresholds
(DI, DE, RE, DINV and RINV)
VL ≤ VCC, for XR33156
VIL
Logic low input thresholds
(DI, DE, RE, DINV and RINV)
VL ≤ VCC, for XR33156
VHYS
Input hysteresis
(DI, DE, RE, DINV, RINV and INV)
IIN
IINHS
RL = 100Ω (RS-422) or
RL = 54Ω (RS-485), Figure 4
1
VCC = 3.3V, for XR33152/55/58
2.0
V
VCC = 5.0V, for XR33152/55/58
2.4
V
0.8
(2/3)VL
(1/3)VL
0V ≤ VIN ≤ VCC, for XR33152/55/58
After first transition, Note 2
Logic input current (INV)
VIN = VCC = 5.5V, for XR33152/55/58
Logic input current (DI, DE and RE)
0V ≤ VIN ≤ VL = VCC = 5.5V, for XR33156
After first transition, Note 2
Logic input current (DINV and RINV)
VIN = VL = VCC = 5.5V, for XR33156
Logic input current hot swap (DE and RE)
Until first transition, Note 2
25
25
VCC = 0V or 5.5V, VOUT = 12V,
DE = 0V, for XR33152/55
IA, B
Input current (A and B)
V
100
Logic input current (DI, DE and RE)
VCC = 0V or 5.5V, VOUT = -7V,
DE = 0V, for XR33152/55
VOUT = -7V, DE = 0V,
VCC = 0V or 5.5V, for XR33156/58
±1
μA
55
μA
±1
μA
33
55
μA
100
±200
μA
100
μA
33
μA
400
-320
V
mV
-80
VOUT = 12V, DE = 0V,
VCC = 0V or 5.5V, for XR33156/58
V
μA
μA
NOTES:
1. Change in magnitude of differential output voltage and change in magnitude of common mode output voltage are the changes in output voltage when DI input
changes state.
2. The hot swap feature disables the DE and RE inputs for the first 10μs after power is applied. Following this time period, these inputs are weakly pulled to their disabled
state (low for DE, high for RE) until the first transition, after which they become high impedance inputs.
REV2C
3/21
XR33152/XR33155/XR33156/XR33158
Electrical Characteristics (Continued)
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol
Parameter
IOL
Output leakage (Y and Z)
Full-duplex
IOSD
Driver short-circuit output current
Conditions
Min
Typ
VOUT = 12V, DE = 0V, VCC = 0V or 5.5V
VOUT = -7V, DE = 0V, VCC = 0V or 5.5V
Max
Units
100
μA
-80
μA
-60V ≤ VOUT ≤ 60V, Figure 6
±250
mA
Driver Thermal Characteristics
TTS
Thermal shutdown temperature
Junction temperature, Note 1
175
°C
TTSH
Thermal shutdown hysteresis
Note 1
15
°C
-25V ≤ VOUT ≤ 25V
±85
Receiver DC Characteristics
VSTH
Receiver differential input signal threshold
voltage (VA - VB)
∆VSTH
Receiver differential input
signal hysteresis
VFSTH-
Negative going receiver differential input
failsafe threshold voltage (VA - VB)
-25V ≤ VOUT ≤ 25V
VFSTH+
Positive going receiver differential input
failsafe threshold voltage (VA - VB)
-25V ≤ VOUT ≤ 25V
∆VFSTH
Receiver differential input
failsafe hysteresis
VOH
Receiver output high voltage (RO)
IOUT = -4mA, for XR33152/55/58
VOL
Receiver output low voltage (RO)
IOUT = 4mA, for XR33152/55/58
VOH
Receiver output high voltage (RO)
3.0V ≤ VL ≤ 5.5V, IOUT = -4mA,
1.6V ≤ VL ≤ 3.0V, IOUT = -1mA,
for XR33156
VOL
Receiver output low voltage (RO)
3.0V ≤ VL ≤ 5.5V, IOUT = 4mA,
1.6V ≤ VL ≤ 3.0V, IOUT = 1mA,
for XR33156
0.4
V
IOZR
High-Z receiver output current
0V ≤ VOUT ≤ VCC, for XR33152/55/58
0V ≤ VOUT ≤ VL, for XR33156
±1
μA
RIN
RX input resistance
IOSC
±200
170
-200
mV
mV
-125
-40
mV
-100
-10
mV
25
mV
VCC - 0.6
V
0.4
VL - 0.6
V
V
-25V ≤ VCM ≤ 25V, for XR33152/55
120
kΩ
-25V ≤ VCM ≤ 25V, for XR33156/58
30
kΩ
RX output short-circuit current
0V ≤ VRO ≤ VCC, for XR33152/55/58
110
mA
RX output short-circuit current
0V ≤ VRO ≤ VL, for XR33156
110
mA
4
mA
1
μA
Supply Current
ICC
Supply current
No load, RE = 0V or VCC,
DE = VCC, DI = 0V or VCC
ISHDN
Supply current in shutdown mode
RE = VCC, DE = 0V
0.001
NOTES:
1. This spec is guaranteed by design and bench characterization.
REV2C
4/21
XR33152/XR33155/XR33156/XR33158
Electrical Characteristics (Continued)
Driver AC Characteristics - XR33152 (250kbps)
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol
Parameter
tDPLH
Driver propagation delay (low to high)
tDPHL
Driver propagation delay (high to low)
|tDPLH-tDPHL|
Differential driver output skew
tDR, tDF
Driver differential output rise or fall time
Maximum data rate
tDZH
Driver enable to output high
tDZL
Driver enable to output low
tDHZ
Driver disable from output high
tDLZ
Driver disable from output low
tRZH(SHDN)
Driver enable from shutdown to
output high
tRZL(SHDN)
Driver enable from shutdown to
output low
tSHDN
Time to shutdown
Conditions
CL = 50pF, RL = 54Ω, Figure 7
Min
Typ
Max
Units
350
1500
ns
350
1600
ns
200
ns
1500
ns
20
400
1/tUI, duty cycle 40% to 60%
250
CL = 50pF, RL = 500Ω, Figure 8
kbps
200
2500
ns
200
2500
ns
250
ns
250
ns
5500
ns
5500
ns
600
ns
CL = 50pF, RL = 500Ω, Figure 8
Notes 1 and 2
50
200
Receiver AC Characteristics -XR33152 (250kbps)
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol
Parameter
tRPLH
Receiver propagation delay (low to high)
tRPHL
Receiver propagation delay (high to low)
|tRPLH-tRPHL|
Receiver propagation delay skew
Maximum data rate
tRZH
Receiver enable to output high
tRZL
Receiver enable to output low
tRHZ
Receiver disable from output high
tRLZ
Receiver disable from output low
tRZH(SHDN)
Receiver enable from shutdown to
output high
tRZL(SHDN)
Receiver enable from shutdown to
output low
tSHDN
Time to shutdown
Conditions
Min
Typ
CL = 15pF, VID = ±2V, VID rise and
fall times < 15ns, Figure 9
1/tUI, duty cycle 40% to 60%
Max
Units
200
ns
200
ns
30
ns
250
kbps
CL = 15pF, RL = 1kΩ, Figure 10
50
ns
50
ns
50
ns
50
ns
3500
ns
3500
ns
600
ns
CL = 15pF, RL = 1kΩ, Figure 10
Notes 1 and 2
50
200
NOTES:
1. The transceivers are put into shutdown by bringing RE high and DE low simultaneously for at least 600ns. If the control inputs are in this state for less than 50ns, the device
is guaranteed to not enter shutdown. If the enable inputs are held in this state for at least 600ns, the device is ensured to be in shutdown. Note that the receiver and driver
enable times increase significantly when coming out of shutdown.
2. This spec is guaranteed by design and bench characterization.
REV2C
5/21
XR33152/XR33155/XR33156/XR33158
Electrical Characteristics (Continued)
Driver AC Characteristics - XR33155 (1Mbps)
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol
Parameter
tDPLH
Driver propagation delay (low to high)
tDPHL
Driver propagation delay (high to low)
|tDPLH-tDPHL|
Differential driver output skew
tDR, tDF
Driver differential output rise or fall time
Maximum data rate
tDZH
Driver enable to output high
tDZL
Driver enable to output low
tDHZ
Driver disable from output high
tDLZ
Driver disable from output low
tDZH(SHDN)
Driver enable from shutdown to
output high
tDZL(SHDN)
Driver enable from shutdown to
output low
tSHDN
Time to shutdown
Conditions
Min
CL = 50pF, RL = 54Ω, Figure 7
100
1/tUI, duty cycle 40% to 60%
Typ
Max
Units
150
500
ns
150
500
ns
5
50
ns
200
300
ns
1
CL = 50pF, RL = 500Ω, Figure 8
Mbps
1000
2500
ns
1000
2500
ns
250
ns
250
ns
2500
4500
ns
2500
4500
ns
200
600
ns
CL = 50pF, RL = 500Ω, Figure 8
Notes 1 and 2
50
Receiver AC Characteristics - XR33155 (1Mbps)
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol
Parameter
tRPLH
Receiver propagation delay (low to high)
tRPHL
Receiver propagation delay (high to low)
|tRPLH-tRPHL|
Receiver propagation delay skew
Maximum data rate
tRZH
Receiver enable to output high
tRZL
Receiver enable to output low
tRHZ
Receiver disable from output high
tRLZ
Receiver disable from output low
tRZH(SHDN)
Receiver enable from shutdown to
output high
tRZL(SHDN)
Receiver enable from shutdown to
output low
tSHDN
Time to shutdown
Conditions
Min
Typ
CL = 15pF, VID = ±2V, VID rise and
fall times < 15ns, Figure 9
1/tUI, duty cycle 40% to 60%
Max
Units
200
ns
200
ns
30
ns
1
Mbps
CL = 15pF, RL = 1kΩ, Figure 10
50
ns
50
ns
50
ns
50
ns
3500
ns
3500
ns
600
ns
CL = 15pF, RL = 1kΩ, Figure 10
Notes 1 and 2
50
200
NOTES:
1. The transceivers are put into shutdown by bringing RE high and DE low simultaneously for at least 600ns. If the control inputs are in this state for less than 50ns, the device
is guaranteed to not enter shutdown. If the enable inputs are held in this state for at least 600ns, the device is ensured to be in shutdown. Note that the receiver and driver
enable times increase significantly when coming out of shutdown.
2. This spec is guaranteed by design and bench characterization.
REV2C
6/21
XR33152/XR33155/XR33156/XR33158
Electrical Characteristics (Continued)
Driver AC Characteristics - XR33156 and XR33158 (20Mbps)
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol
Parameter
tDPLH
Driver prop. delay (low to high)
tDPHL
Driver prop. delay (high to low)
|tDPLH-tDPHL|
Differential driver output skew
tDR, tDF
Driver differential output
rise or fall time
Maximum data rate
tDZH
Driver enable to output high
tDZL
Driver enable to output low
tDHZ
Driver disable from output high
tDLZ
Driver disable from output low
tDZH(SHDN)
Driver enable from shutdown to
output high
tDZL(SHDN)
Driver enable from shutdown to
output low
tSHDN
Time to shutdown
Conditions
Min
Typ
CL = 50pF, RL = 54Ω,
Figure 7
1/tUI, duty cycle 40% to 60%
Units
25
ns
25
ns
5
ns
15
ns
20
Mbps
CL = 50pF, RL = 500Ω,
Figure 8
CL = 50pF, RL = 500Ω,
Figure 8
Notes 1 and 2
Max
50
200
60
ns
60
ns
250
ns
250
ns
2200
ns
2200
ns
600
ns
Receiver AC Characteristics - XR33156 and XR33158 (20Mbps)
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol
Parameter
tRPLH
Receiver prop. delay (low to high)
tRPHL
Receiver prop. delay (high to low)
|tRPLH-tRPHL|
Receiver propagation delay skew
Maximum data rate
tRZH
Receiver enable to output high
tRZL
Receiver enable to output low
tRHZ
Receiver disable from output high
tRLZ
Receiver disable from output low
tRZH(SHDN)
Receiver enable from shutdown to
output high
tRZL(SHDN)
Receiver enable from shutdown to
output low
tSHDN
Time to shutdown
Conditions
Min
Typ
CL = 15pF, VID = ±2V,
VID rise and fall times < 15ns,
Figure 9
1/tUI, duty cycle 40% to 60%
Units
60
ns
60
ns
5
ns
20
Mbps
CL = 15pF, RL = 1kΩ,
Figure 10, for XR33156
CL = 15pF, RL = 1kΩ,
Figure 10, for XR33156
Notes 1 and 2, for XR33156
Max
50
200
50
ns
50
ns
50
ns
50
ns
2200
ns
2200
ns
600
ns
NOTES:
1. The transceivers are put into shutdown by bringing RE high and DE low simultaneously for at least 600ns. If the control inputs are in this state for less than 50ns,
the device is guaranteed to not enter shutdown. If the enable inputs are held in this state for at least 600ns, the device is ensured to be in shutdown. Note that the receiver
and driver enable times increase significantly when coming out of shutdown.
2. This spec is guaranteed by design and bench characterization.
REV2C
7/21
XR33152/XR33155/XR33156/XR33158
Pin Configurations
RINV 1
RO 1
8 VCC
INV 2
7 B/Z
DE 3
6 A/Y
DI 4
5 GND
XR33152, XR33155 and XR33158 Half-duplex
14 VCC
RO 2
13 VL
RE 3
12 A
DE 4
11 B
DI 5
10 Z
GND 6
9 Y
GND 7
8 DINV
XR33156 Full-duplex
Pin Functions
Pin Number
Half-duplex
XR33152
XR33155
XR33158
Full-duplex
XR33156
Pin Name
Type
Description
-
1
RINV
I
Receiver invert control (active high). When enabled, the polarity of the receiver bus
pins (A & B) is reversed: A = inverting and B = non-inverting. When disabled, the
receiver bus pins (A & B) operate normally: A = non-inverting and B = inverting.
The RINV pin has a 150KΩ pull-down resistor.
1
2
RO
O
Receiver output, when RE is low and if (A-B) ≥ 200mV, RO is high. If (A-B) ≤ -200mV,
RO is low If inputs are left floating, shorted together or terminated and undriven for
more than 2μs the output is high.
2
-
INV
I
Driver and receiver invert control (active high). When enabled, the polarity of the driver
input and receiver input bus pins is inverted. When disabled, the driver input and
receiver inputs operate normally: A = non-inverting and B = inverting. The INV pin has
a 150kΩ pull-down resistor.
-
3
RE
I
Receiver output enable (hot swap). When RE is low, RO is enabled. When RE is high,
RO is high impedance. RE should be high and DE should be low to enter
shutdown mode.
3
4
DE
I
Driver output enable (hot swap). When DE is high, outputs are enabled. When DE is
low, outputs are high impedance. DE should be low and RE should be high to enter
shutdown mode.
4
5
DI
I
Driver input. With DE high, a low level on DI forces non-inverting output low and
inverting output high. Similarly, a high level on DI forces non-inverting output high and
inverting output low.
5
6, 7
GND
PWR
6
-
A/Y
I/O
Non-inverting receiver input and non-Inverting driver output.
7
-
B/Z
I/O
Inverting receiver input and Inverting driver output.
Ground.
NOTE:
Type: I = Input, O = Output, I/O = Input/Output, PWR = Power.
REV2C
8/21
XR33152/XR33155/XR33156/XR33158
Pin Functions (Continued)
Pin Number
Half-duplex
XR33152
XR33155
XR33158
Full-duplex
XR33156
8
Pin Name
Type
Description
14
VCC
PWR
3.0V to 5.5V power supply input bypass to ground with 0.1μF capacitor.
-
12
A
I
Non inverting receiver input.
-
11
B
I
Inverting receiver input.
-
9
Y
O
Non-inverting driver output.
-
10
Z
O
Inverting driver output.
-
8
DINV
I
Driver invert control (active high). When enabled, the polarity of the driver input pin is
inverted causing the driver output (Y & Z) polarities to be inverted. When disabled, the
driver bus pins (Y & Z) operate normally: Y = non-inverting and Z = inverting. The DINV
pin has a 150kΩ pull-down resistor.
-
13
VL
PWR
Logic interface power supply.
NOTE:
Type: I = Input, O = Output, I/O = Input/Output, PWR = Power.
REV2C
9/21
XR33152/XR33155/XR33156/XR33158
Pin Functions (Continued)
XR33156 (Full-duplex - 14 Pins)
XR33156 (Full-duplex - 14 Pins)
Transmitting
Receiving
Inputs
Outputs
Inputs
Output
DINV
RE
DE
DI
Y
Z
RINV
RE
DE
VA - VB
RO
0
X
1
1
1
0
0
0
X
≥ 200mV
1
0
X
1
0
0
1
0
0
X
≤ -200mV
0
1
X
1
1
0
1
0
0
X
Open/shorted
1
1
X
1
0
1
0
1
0
X
≥ 200mV
0
X
0
0
X
High-Z
1
0
X
≤ -200mV
1
X
1
0
X
High-Z (shutdown)
1
0
X
Open/shorted
1
X
1
1
X
High-Z
X
1
0
X
High-Z (shutdown)
XR33152, XR33155 and XR33158 (Half-duplex - 8 Pins)
XR33152, XR33155 and XR33158 (Half-duplex - 8 Pins)
Transmitting
Receiving
Inputs
Outputs
Inputs
Output
INV
DE
DI
A/Y
B/Z
INV
DE
VA - VB
RO
0
1
1
1
0
0
0
≥ 200mV
1
0
1
0
0
1
0
0
≤ -200mV
0
1
1
1
0
1
1
0
Open/shorted
1
1
1
0
1
0
1
0
≥ +200mV
0
X
0
X
1
0
≤ -200mV
1
1
0
Open/shorted
1
High-Z
REV2C
10/21
XR33152/XR33155/XR33156/XR33158
Applications Information
R
RO 1
RINV 1
8 VCC
14 VCC
R
RO 2
13 VL
INV 2
7 B/Z
RE 3
12 A
DE 3
6 A/Y
DE 4
11 B
5 GND
DI 5
DI 4
D
D
GND 6
GND 7
10 Z
9 Y
8 DINV
XR33152, XR33155 and XR33158
XR33156
Figure 2. XR33152, XR33155 and XR33158 Half-duplex and XR33156 Full-duplex
DI = OV or VCC
RL
2
VOD
D
RL
2
DE = VCC
Z
VCM
Y
Figure 3. Differential Driver Output Voltage
Z
375Ω
DI = OV or VCC
VOD
D
VCM
60Ω
375Ω
Y
DE = VCC
Figure 4. Differential Driver Output Voltage Over Common Mode
REV2C
11/21
XR33152/XR33155/XR33156/XR33158
Applications Information (Continued)
Z
DI = OV or VCC
IOSD
D
Y -60V to 60V
V
DE = OV or VCC
Figure 5. Driver Output Short Circuit Current
DEVICE POWERED
ON/OFF
A OR Z
TRANSCEIVER,
GENERATOR,
RECEIVER
100Ω±1%
VTEST
15 μs DURATION
1% DUTY CYCLE
B OR Y
Figure 6. Transient Overvoltage Test Circuit
DI
3V
1.5V
OV
Z
1.5V
tDPHL
tDPLH
VOD
Y
VOD
(VY - VZ)
tSKEW = tDPLH – tDPHL
VOD+
OV
VOD–
90%
10%
90%
tDR
10%
tDF
Z
DI
VOD
D
RL
CL
Y
DE = VCC
Figure 7. Driver Propagation Delay Test Circuit and Timing Diagram
REV2C
12/21
XR33152/XR33155/XR33156/XR33158
Applications Information (Continued)
Z
TESTING Z: DI = OV
D
VOUT
TESTING Y: DI = VCC
Y
DE
3V
DE
OV
1.5V
CL
1.5V
tDHZ
tDZH
VOUT
RL
VOH
VOH – 0.25V
VOH + VOL
2
VOL
VCC
Z
TESTING Z: DI = VCC
RL
D
VOUT
TESTING Y: DI = OV
Y
CL
DE
3V
DE
OV
1.5V
1.5V
tDLZ
tDZL
VOUT
VOH
VOL
VOH + VOL
2
VOL + 0.25V
Figure 8. Driver Enable and Disable Timing Test Circuits and Timing Diagrams
REV2C
13/21
XR33152/XR33155/XR33156/XR33158
Applications Information (Continued)
B
R
RO
CL
A
RE = OV
+1V
0V
–1V
B
VID
A
tRPLH
tRPHL
VOH
RO
VCC/2
VCC/2
VOL
Figure 9. Receiver Propagation Delay Test Circuit and Timing Diagram
REV2C
14/21
XR33152/XR33155/XR33156/XR33158
Applications Information (Continued)
B
R
A
3V
RE
OV
RO
RL
RE
1.5V
1.5V
VA = VCC
VB = OV
tRHZ
tRZH
VOH
RO
CL
VOH – 0.25V
VOH
2
OV
VCC
B
RL
R
A
3V
RE
OV
VA = OV
VB = VCC
RO
RO
CL
RE
1.5V
1.5V
tRLZ
tRZL
VCC
VOL
VCC + VOL
2
VOL + 0.25V
Figure 10. Receiver Enable and Disable Test Circuits and Timing Diagrams
REV2C
15/21
XR33152/XR33155/XR33156/XR33158
Applications Information (Continued)
The XR3315x RS-485/RS-422 devices are part of
MaxLinear’s high performance serial interface product line.
The analog bus pins can survive direct shorts up to ±60V
and are protected against ESD events up to ±15kV.
Enhanced Failsafe
Ordinary RS-485 differential receivers will be in an
indeterminate state whenever the data bus is not being
actively driven. The enhanced failsafe feature of the
XR3315x family guarantees a logic-high receiver output
when the receiver inputs are open, shorted or when they
are connected to a terminated transmission line with all
drivers disabled. In a terminated bus with all transmitters
disabled, the receivers’ differential input voltage is pulled
to 0V by the termination. The XR3315x family interprets
0V differential as a logic high with a minimum 50mV noise
margin while maintaining compliance with the RS-485
standard of ±200mV. Although the XR3315x family does
not need failsafe biasing resistors, it can operate without
issue if biasing is used.
Hot Swap Capability
When VCC is first applied the XR3315x family holds the
driver enable and receiver 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
XR3315x family from driving any output signal until power
has stabilized. After the initial 10μs, the driver and receiver
enable pins are weakly pulled to their disabled states (low
for DE and high for RE) until the first transition. After the first
transition, the DE and RE pins operate as high impedance
inputs.
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 or receiver, 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 and receiver
inputs of the XR3315x family have extra protection against
static electricity. MaxLinear uses state-of-the-art structures
to protect these pins against ESD damage:
■■ ±15kV
■■ ±4kV
HBM for bus pins to GND
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.
Maximum Number of Transceivers on the Bus
The standard RS-485 receiver input impedance is 12kΩ (1
unit load). A standard driver can drive up to 32 unit loads.
The XR33152 transceiver has a 1/10th unit load receiver
input impedance of 120kΩ, allowing up to 320 transceivers
to be connected in parallel on a communication line. The
XR33156/58 transceivers have a 1/2.5 unit load receiver
input impedance of 30kΩ, allowing up to 80 transceivers
to be connected in parallel on a communication line. Any
combination of these devices and other RS-485 transceivers
up to a total of 32 unit loads may be connected to the line.
Low Power Shutdown Mode
The XR33156 has a low-power shutdown mode that is
initiated by bringing both RE high and DE low simultaneously.
While in shutdown the XR33156 draws less than 1μA of
supply current. DE and RE may be tied together and driven
by a single control signal. Devices are guaranteed not to
enter shutdown if RE is high and DE is low for less than
50ns. If the inputs are in this state for at least 600ns, the
parts will enter shutdown.
XR33156 enable times, tZH and tZL, apply when the part is
not in low power shutdown state. Enable times, tZH(SHDN)
and tZL(SHDN) apply when the part is shutdown. The driver
and receiver take longer to become enabled from low
power shutdown tZH(SHDN) and tZL(SHDN) than from driver
or receiver disable mode (tZH and tZL).
REV2C
16/21
XR33152/XR33155/XR33156/XR33158
Applications Information (Continued)
Product Selector Guide
Part Number
Operation
Data Rate
XR33152
Half-duplex
250kbps
XR33155
Half-duplex
1Mbps
XR33156
Full-duplex
XR33158
Half-duplex
20Mbps
Shutdown
Receiver/Driver
Enable
Nodes
On Bus
Footprint
No
No/Yes
320
8-NSOIC
Yes
Yes/Yes
80
14-NSOIC
No
No/Yes
80
8-NSOIC
REV2C
17/21
XR33152/XR33155/XR33156/XR33158
Mechanical Dimensions
NSOIC-8
Top View
Front View
Side View
Drawing No:
Revision:
REV2C
POD-00000108
A
18/21
XR33152/XR33155/XR33156/XR33158
Mechanical Dimensions
NSOIC-14
Top View
Front View
Side View
REV2C
Drawing No:
POD-00000109
Revision:
A
19/21
XR33152/XR33155/XR33156/XR33158
Ordering Information(1)
Part Number
Operation
Data Rate
XR33152ID-F
XR33152IDTR-F
XR33152HD-F
Half-duplex
Half-duplex
1Mbps
20Mbps
XR33158HD-F
XR33158HDTR-F
14-pin SOIC
XR33152IDEVB
XR33152HDEVB
XR33155IDEVB
XR33155HDEVB
XR33156IDEVB
XR33156HDEVB
XR33158IDEVB
XR33158HDEVB
Tape and Reel
Tube
Tube
8-pin SOIC
-40°C to 105°C
Tube
Tape and Reel
-40°C to 85°C
20Mbps
Tape and Reel
Tube
-40°C to 105°C
Half-duplex
Tube
Tape and Reel
-40°C to 85°C
XR33158ID-F
XR33158IDTR-F
8-pin SOIC
Yes(2)
XR33156HDTR-F
Tape and Reel
Tube
-40°C to 105°C
Full-duplex
Packaging Method
Tape and Reel
-40°C to 85°C
XR33156ID-F
XR33156HD-F
8-pin SOIC
-40°C to 105°C
XR33155HDTR-F
XR33156IDTR-F
Package
Tube
250kbps
XR33155ID-F
XR33155HD-F
Lead-Free
-40°C to 85°C
XR33152HDTR-F
XR33155IDTR-F
Operating
Temperature Range
Tape and Reel
Tube
Tape and Reel
Evaluation Boards
NOTE:
1. Refer to www.exar.com/XR33152, www.exar.com/XR33155, www.exar.com/XR33156, www.exar.com/XR33158 for most up-to-date Ordering Information.
2. Visit www.exar.com for additional information on Environmental Rating.
REV2C
20/21
XR33152/XR33155/XR33156/XR33158
Revision History
Revision
Date
Description
1A
Jan 2016
Initial Release
2A
July 2016
Add XR33155, -40°C to 105°C parts, and Revision History.
2B
Jan 2017
Corrected XR33158 max temperature typo
2C
Feb 2018
Updated to MaxLinear logo. Updated format and Ordering Information. Moved ESD ratings to page 2.
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
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
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REV2C
21/21
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