XR3080-88X
HIGH OUTPUT 18V TOLERANT RS-485/RS-422 +5V TRANSCEIVERS
SEPT 2013
REV. 1.0.1
R E L I A B I L I T Y
GENERAL DESCRIPTION
The XR3080-88X family of high performance RS-485/
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
±18V, and are protected against ESD events up to
±15kV. The Profibus compliant differential output deliv-
ers 40% higher SNR than standard RS-485/422
devices, affording additional noise margin or extended
cable lengths.
The receivers include full fail-safe circuitry, guarantee-
ing a logic-high receiver output when the receiver
inputs are open, shorted, or undriven. The receiver
input impedance is at minimum 96
k
(1/8 unit load),
allowing up to 256 devices on the bus while preserving
the full signal margin.
The drivers are protected by short circuit detection as
well as thermal shutdown, and maintain high imped-
ance in shutdown or when powered off. The XR3080-
85X drivers are slew limited for reduced EMI and error-
free communication over long or unterminated data
cables.
The devices with DE and RE pins include hot swap cir-
cuitry to prevent false transitions on the bus during
powerup or live insertion, and can enter a 1nA low cur-
rent shutdown mode for extreme power savings.
The transceivers draw less than 600μA from a +5.0V
supply, and typically only 300μA when idling with the
receivers active.
FEATURES
40% Higher SNR
(Signal-to-Noise Ratio)
compared to other RS-485 devices (2.1V vs. 1.5V)
±18V Fault Tolerance
on Analog Bus pins
2.1V Driver Output
(Profibus Compliant)
Robust ESD (ElectroStatic Discharge) Protection:
■
■
■
■
±15kV IEC 61000-4-2 Air Gap Discharge
± 8kV IEC 61000-4-2 Contact Discharge
±15kV Human Body Model
± 4kV Human Body Model on non-bus pins
+4.5V to +5.5V Operation
(5V ± 10%)
300μA Idle Current, 1nA Shutdown Current
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
E X C E L L E N C E
&
1/8
th
Unit Load Allows up to 256 Devices on Bus
Industry Standard 8 and 14 NSOIC Packages
TYPICAL APPLICATIONS
Motor Control
Security Systems
Building and Process Automation
Remote Utility Meter Reading
Energy Monitoring and Control
Long or Unterminated Transmission Lines
Profibus DP Fieldbus Networks
:
S E R I E S
RO
RE
DE
DI
1
2
3
4
R
8
7
6
V
CC
B
A
GND
D
5
X
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
•
(510) 668-7000
•
FAX (510) 668-7017
•
www.exar.com
XR3080-88X
HIGH OUTPUT 18V TOLERANT RS-485/RS-422 +5V TRANSCEIVERS
REV. 1.0.1
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at these ratings or any other above those
indicated in the operation sections to the specifications below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect reliability and cause permanent damage to the device.
V
CC
Input Voltage at Control and Driver Input (RE, DE, and DI)
Receiver Output Voltage (RO)
Driver Output Voltage (A, B, Y and Z)
Receiver Input Voltage (A and B, half or full duplex)
Transient Voltage Pulse, through 100
Driver Output Current
Storage Temperature Range
Lead Temperature (soldering, 10s)
Package Power Dissipation
8-Pin SO
-0.3V to +7.0V
-0.3V to +7.0V
-0.3V to (V
CC
+ 0.3V)
±18V
±18V
±70V
±250mA
-65°C to +150°C
+300°C
Maximum Junction Temperature = +150°C
JA
= 128.4°C/W
14-Pin SO
JA
= 86°C/W
CAUTION:
ESD (Electrostatic Discharge) sensitive device. Permanent damage may occur on unconnected devices
subject to high energy electrostatic fields. Unused devices must be stored in conductive foam or shunts.
Personnel should be properly grounded prior to handling this device. The protective foam should be
discharged to the destination socket before devices are removed.
ORDERING INFORMATION
P
ART
N
UMBER
XR3080XID-F
XR3081XID-F
XR3082XID-F
XR3083XID-F
XR3084XID-F
XR3085XID-F
XR3086XID-F
XR3087XID-F
XR3088XID-F
D
UPLEX
Full
Full
Half
Full
Full
Half
Full
Full
Half
D
ATA
R
ATE
250kbps
250kbps
250kbps
1Mbps
1Mbps
1Mbps
20Mbps
20Mbps
20Mbps
P
ACKAGE
14-pin Narrow SOIC
8-pin Narrow SOIC
8-pin Narrow SOIC
14-pin Narrow SOIC
8-pin Narrow SOIC
8-pin Narrow SOIC
14-pin Narrow SOIC
8-pin Narrow SOIC
8-pin Narrow SOIC
T
EMPERATURE
R
ANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
N
OTE
:
Tape and Reel part numbers are XR30xxXIDTR-F, -F = Green / RoHS Compliant
2
XR3080-88X
REV. 1.0.1
HIGH OUTPUT 18V TOLERANT RS-485/RS-422 +5V TRANSCEIVERS
ELECTRICAL CHARACTERISTICS
Unless otherwise noted: V
CC
= +5.0V ±10%, T
A
= T
MIN
to T
MAX
. Typical values are at V
CC
= 5.0V, T
A
= +25°C.
S
YMBOL
P
ARAMETERS
M
IN
.
T
YP
.
M
AX
.
U
NITS
C
ONDITIONS
DRIVER DC CHARACTERISTICS
V
CC
Supply Voltage Range
4.5
3
3
V
OD
Differential Driver Output
2.1
2.1
V
OD
V
CM
V
CM
V
IH
V
IL
V
HYS
I
IN
Change in Magnitude of
Differential Output Voltage
Driver Common-Mode Output
Voltage (steady state)
Change in Magnitude of
Common-Mode Output Voltage
2.0
Logic Input Thresholds (DI, DE, RE)
0.8
Input Hysteresis (DI, DE, RE)
Logic Input Current (DI, DE, RE)
Logic Input Current (DE and RE)
100
100
±1
±200
V
mV
μA
μA
0V
V
IN
V
CC
,
After first transition, Note 2
Until first transition, Note 2
V
OUT
= +12V, DE = 0V,
V
CC
= 0V or 5.5V
V
OUT
= -7V, DE = 0V,
V
CC
= 0V or 5.5V
V
OUT
= +12V, DE = 0V,
V
CC
= 0V or 5.5V
V
OUT
= -7V, DE = 0V,
V
CC
= 0V or 5.5V
-7V
V
OUT
+12V,
Figure 5
Logic Input Low
V
CC
/ 2
5.5
V
CC
V
CC
V
CC
V
CC
±0.2
3
±0.2
V
V
V
V
V
V
V
V
V
Logic Input High
R
L
= 100
(RS-422), or
R
L
= 54
(RS-485),
Figure 3,
Note 1
No Load
R
L
= 100
(RS-422),
Figure 3
R
L
= 54
(RS-485),
Figure 3
-7V
V
CM
+12V,
Figure 4
125
I
A, B
Input Current (A and B)
-100
μA
μA
125
I
OL
Output Leakage (Y and Z)
Full Duplex (Note 2)
-100
I
OSD
Driver Short-Circuit Output Current
±250
μA
μA
mA
DRIVER THERMAL CHARACTERISTICS
T
TS
T
TSH
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
175
15
°C
°C
Junction temperature, Note 4
Note 4
3
XR3080-88X
HIGH OUTPUT 18V TOLERANT RS-485/RS-422 +5V TRANSCEIVERS
Unless otherwise noted: V
CC
= +5.0V ±10%, T
A
= T
MIN
to T
MAX
. Typical values are at V
CC
= 5.0V, T
A
= +25°C.
S
YMBOL
P
ARAMETERS
M
IN
.
T
YP
.
M
AX
.
U
NITS
C
ONDITIONS
REV. 1.0.1
RECEIVER DC CHARACTERISTICS
V
TH
V
OH
V
OH
V
OL
I
OZR
R
IN
I
OSC
Receiver Differential Threshold
Voltage (V
A
- V
B
)
Receiver Input Hysteresis
Receiver Output High Voltage (RO)
Receiver Output Low Voltage (RO)
High-Z Receiver Output Current
Receiver Input Resistance
Receiver Output Short-Circuit
Current
96
±95
V
CC
-1.5
-200
-125
25
-50
mV
mV
V
-7V
V
CM
+12V
V
CM
= 0V
I
OUT
= -4mA
I
OUT
= 4mA
0V
V
OUT
V
CC
-7V
V
CM
+12V
0V
V
RO
V
CC
0.4
±1
V
μA
k
mA
SUPPLY CURRENT
425
I
CC
Supply Current
600
μA
No Load, RE = 0V, DE = V
CC
DI = 0V
No Load, RE = V
CC
, DE = V
CC
DI = 0V
No Load, RE = 0V, DE = 0V
Receiver A and B inputs open
RE = V
CC
, DE = 0V
330
300
600
600
1
μA
μA
μA
I
SHDN
Supply Current in Shutdown Mode
0.001
ESD PROTECTION
±15
ESD Protection for A, B, Y, and Z
±15
±8
ESD Protection for all other pins
±4
kV
kV
kV
kV
Human Body Model
IEC 61000-4-2 Airgap
IEC 61000-4-2 Contact
Human Body Model
4
XR3080-88X
REV. 1.0.1
HIGH OUTPUT 18V TOLERANT RS-485/RS-422 +5V TRANSCEIVERS
Unless otherwise noted: V
CC
= +5.0V ±10%, T
A
= T
MIN
to T
MAX
. Typical values are at V
CC
= 5.0V, T
A
= +25°C.
S
YMBOL
P
ARAMETERS
M
IN
.
T
YP
.
M
AX
.
U
NITS
C
ONDITIONS
DRIVER AC CHARACTERISTICS
t
DPLH
t
DPHL
Driver Prop. Delay (Low to High)
Driver Prop. Delay (High to Low)
Differential Driver Output Skew
Driver Differential Output
Rise or Fall Time
Maximum Data Rate
t
DZH
t
DZL
t
DHZ
t
DLZ
t
DZH(SHDN)
t
DZL(SHDN)
t
SHDN
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable from Output High
Driver Disable from Output Low
Driver Enable from Shutdown to
Output High
Driver Enable from Shutdown to
Output Low
Time to Shutdown
50
200
400
250
200
200
6
6
350
350
20
XR3080X, XR3081X and XR3082X (250kbps)
1500
1500
200
1500
ns
ns
ns
ns
kbps
2500
2500
100
100
5500
5500
600
ns
ns
ns
ns
ns
ns
ns
C
L
= 50pF, R
L
= 500
,
Figure 7
Notes 3 and 4
C
L
= 50pF, R
L
= 500
,
Figure 7
1/t
UI
, Duty Cycle 40 to 60%
C
L
= 50pF, R
L
= 54
,
Figure 6
|
t
DPLH
-t
DPHL
|
t
DR
, t
DF
RECEIVER AC CHARACTERISTICS
t
RPLH
t
RPHL
Receiver Prop. Delay (Low to High)
Receiver Prop. Delay (High to Low)
Receiver Propagation Delay Skew
Maximum Data Rate
t
RZH
t
RZL
t
RHZ
t
RLZ
t
RZH(SHDN)
t
RZL(SHDN)
t
SHDN
Receiver Enable to Output High
Receiver Enable to Output Low
Receiver Disable from Output High
Receiver Disable from Output Low
Receiver Enable from Shutdown
to Output High
Receiver Enable from Shutdown
to Output Low
Time to Shutdown
50
200
250
XR3080X, XR3081X and XR3082X (250kbps)
200
200
30
ns
ns
ns
kbps
50
50
50
50
3500
3500
600
ns
ns
ns
ns
ns
ns
ns
C
L
= 15pF, R
L
= 1k
,
Figure 9
Notes 3 and 4
C
L
= 15pF, R
L
= 1k
,
Figure 9
C
L
= 15pF, V
ID
= ±2V,
V
ID
Rise and Fall times < 15ns
Figure 8
1/t
UI
, Duty Cycle 40 to 60%
|
t
RPLH
-t
RPHL
|
5
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