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±16.5kV
ESD, Large Output Swing, 5V, Full
Fail-Safe, 1/8 Unit Load, RS-485/RS-422
Transceivers
ISL3150E, ISL3152E, ISL3153E,
ISL3155E, ISL3156E, ISL3158E
The ISL315xE are IEC61000 ESD protected, 5V
powered transceivers that meet the RS-485 and RS-422
standards for balanced communication. Driver outputs
and receiver inputs are protected against ±16.5kV ESD
strikes without latch-up.
Transmitters in this family deliver exceptional differential
output voltages (2.4V min), into the RS-485 required
54Ω load, for better noise immunity, or to allow up to
eight 120Ω terminations in “star” topologies.
These devices have very low bus currents so they
present a true “1/8 unit load” to the RS-485 bus. This
allows up to 256 transceivers on the network without
using repeaters.
Receiver (Rx) inputs feature a “Full Fail-Safe” design,
which ensures a logic high Rx output if Rx inputs are
floating, shorted, or on a terminated but undriven bus.
Rx outputs feature high drive levels - typically 28mA @
V
OL
= 1V (to ease the design of optocoupled isolated
interfaces).
Half duplex (Rx inputs and Tx outputs multiplexed
together) and full duplex pinouts are available. See
Table 1 on page 2 for key features and configurations by
device number.
ISL3150E, ISL3152E, ISL3153E, ISL3155E, ISL3156E, ISL3158
E
Features
• High Driver V
OD
. . . . . . . 2.4V (Min) @ R
D
= 54Ω
Better Noise Immunity, or Drive Up to 8 Terminations
• ±16.5kV IEC61000 ESD Protection on I/O Bus Pins
• High Transient Overvoltage Tolerance . . . . ±100V
• Full Fail-safe (Open, Short, Terminated) Receivers
• High Rx I
OL
for Opto-Couplers in Isolated Designs
• Hot Plug Circuitry - Tx and Rx Outputs Remain
Three-State During Power-up/Power-down
• True 1/8 Unit Load for up to 256 Devices on the Bus
• High Data Rates . . . . . . . . . . . . . . up to 20Mbps
• Low Quiescent Supply Current . . . . . . . . . 600
µ
A
Ultra Low Shutdown Supply Current . . . . . . 70nA
Applications*
(see page 17)
• Utility Meters/Automated Meter Reading Systems
• High Node Count Systems
• PROFIBUS® and Field Bus Networks, and Factory
Automation
• Security Camera Networks
• Building Lighting and Environmental Control Systems
• Industrial/Process Control Networks
Exceptional Tx Drives Up To 8
Terminations While Still
Delivering 1.5V V
OD
140
130
120
DRIVER OUTPUT CURRENT (mA)
110
100
90
80
70
60
50
40
30
20
10
0
8 TERMS
6 TERMS
1 TERM
2 TERMS
Large V
OD
Delivers Superior
Signal At Cable End For
Enhanced Noise Immunity
3
ISL3158E
2
OUTPUT VOLTAGE (V)
1
0
-1
STANDARD
1.5V TX
-2
-3
20Mbps, 150’ UTP, DOUBLE 120Ω TERMS
20ns/DIV
0
1
2
3
4
1.5
DIFFERENTIAL OUTPUT VOLTAGE (V)
5
July 30, 2009
FN6363.2
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2006-2009 All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL3150E, ISL3152E, ISL3153E, ISL3155E, ISL3156E, ISL3158E
TABLE 1. SUMMARY OF FEATURES
PART
NUMBER
ISL3150E
ISL3152E
ISL3153E
ISL3155E
ISL3156E
ISL3158E
HALF/FULL
DUPLEX
Full
Half
Full
Half
Full
Half
DATA
RATE
(Mbps)
0.115
0.115
1
1
20
20
SLEW-
RATE
LIMITED?
Yes
Yes
Yes
Yes
No
No
HOT
PLUG
Yes
Yes
Yes
Yes
Yes
Yes
#
DEVICES
ON BUS
256
256
256
256
256
256
Rx/Tx
ENABLE?
Yes
Yes
Yes
Yes
Yes
Yes
QUIESCENT LOW POWER
PIN
I
CC
(µA)
SHUTDOWN? COUNT
600
600
600
600
600
600
Yes
Yes
Yes
Yes
Yes
Yes
10, 14
8
10, 14
8
10, 14
8
Ordering Information
PART NUMBER
ISL3150EIBZ (Notes 1, 3)
ISL3150EIUZ (Notes 1, 3)
ISL3152EIBZ (Notes 1, 3)
ISL3152EIPZ (Notes 2, 3)
ISL3152EIUZ (Notes 1, 3)
ISL3153EIBZ (Notes 1, 3)
ISL3153EIUZ (Notes 1, 3)
ISL3155EIBZ (Notes 1, 3)
ISL3155EIUZ (Notes 1, 3)
ISL3156EIBZ (Notes 1, 3)
ISL3156EIUZ (Notes 1, 3)
ISL3158EIBZ (Notes 1, 3)
ISL3158EIUZ (Notes 1, 3)
PART MARKING
3150EIBZ
3150Z
3152EIBZ
ISL3152 EIPZ
3152Z
3153EIBZ
3153Z
3155EIBZ
3155Z
3156EIBZ
3156Z
3158EIBZ
3158Z
TEMP. RANGE
(°C)
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
-40 to +85
PACKAGE
(Pb-Free)
14 Ld SOIC
10 Ld MSOP
8 Ld SOIC
8 Ld PDIP
8 Ld MSOP
14 Ld SOIC
10 Ld MSOP
8 Ld SOIC
8 Ld MSOP
14 Ld SOIC
10 Ld MSOP
8 Ld SOIC
8 Ld MSOP
PKG.
DWG. #
M14.15
M10.118
M8.15
E8.3
M8.118
M14.15
M10.118
M8.15
M8.118
M14.15
M10.118
M8.15
M8.118
1. Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. Pb-free PDIPs can be used for through-hole wave solder processing only. They are not intended for use in Reflow solder
processing applications.
3. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach
materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both
SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
4. For Moisture Sensitivity Level (MSL), please see device information pages for
ISL3150E, ISL3152E, ISL3153E, ISL3155E,
ISL3156E
and
ISL3158E.
For more information on MSL please see techbrief
TB363.
Pin Configurations
ISL3152E, ISL3155E, ISL3158E
(8 LD MSOP, 8 LD SOIC, 8 LD PDIP)
TOP VIEW
RO 1
RE 2
DE 3
DI 4
D
R
8 V
CC
7 B/Z
6 A/Y
5 GND
ISL3150E, ISL3153E, ISL3156E
(10 LD MSOP)
TOP VIEW
RO 1
RE 2
DE 3
DI 4
GND 5
D
R
10 V
CC
9 A
8 B
7 Z
6 Y
ISL3150E, ISL3153E, ISL3156E
(14 LD SOIC)
TOP VIEW
NC 1
RO 2
RE 3
DE 4
DI 5
GND 6
GND 7
D
R
14 V
CC
13 NC
12 A
11 B
10 Z
9 Y
8 NC
2
FN6363.2
July 30, 2009
ISL3150E, ISL3152E, ISL3153E, ISL3155E, ISL3156E, ISL3158E
Pin Descriptions
PIN
RO
RE
DE
DI
GND
A/Y
B/Z
A
B
Y
Z
V
CC
NC
FUNCTION
Receiver output: If A-B
≥
-50mV, RO is high; If A-B
≤
-200mV, RO is low; RO = High if A and B are unconnected
(floating) or shorted.
Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high.
Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high impedance when
DE is low.
Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y high and
output Z low.
Ground connection.
±16.5kV IEC61000 ESD Protected RS-485/RS-422 level, non-inverting receiver input and non inverting driver
output. Pin is an input if DE = 0; pin is an output if DE = 1.
±16.5kV IEC61000 ESD Protected RS-485/RS-422 level, inverting receiver input and inverting driver output. Pin is
an input if DE = 0; pin is an output if DE = 1.
±16.5kV IEC61000 ESD Protected RS-485/RS-422 level, non-inverting receiver input.
±16.5kV IEC61000 ESD Protected RS-485/RS-422 level, inverting receiver input.
±16.5kV IEC61000 ESD Protected RS-485/RS-422 level, non-inverting driver output.
±16.5kV IEC61000 ESD Protected RS-485/RS-422 level, inverting driver output.
System power supply input (4.5V to 5.5V).
No Connection.
Truth Tables
TRANSMITTING
INPUTS
RE
X
X
0
1
DE
1
1
0
0
DI
1
0
X
X
Z
0
1
High-Z
High-Z*
OUTPUTS
Y
1
0
High-Z
High-Z*
1
1
0
1
0
0
0
RE
DE
Half
Duplex
0
0
0
RECEIVING
INPUTS
DE
Full
Duplex
X
X
X
0
1
A-B
OUTPUT
RO
≥
-0.05V
≤
-0.2V
Inputs
Open/Shorted
X
X
1
0
1
High-Z*
High-Z
NOTE: *Shutdown Mode (See Note 11).
NOTE: *Shutdown Mode (See Note 11).
3
FN6363.2
July 30, 2009
ISL3150E, ISL3152E, ISL3153E, ISL3155E, ISL3156E, ISL3158E
Typical Operating Circuit
ISL3152E, ISL3155E, ISL3158E
+5V
8
1 RO
2 RE
3 DE
4 DI
D
GND
5
GND
5
V
CC
R
B/Z 7
A/Y 6
R
T
R
T
7
6
B/Z
A/Y
R
+
0.1µF
+
0.1µF
+5V
8
V
CC
D
DI 4
DE 3
RE 2
RO 1
ISL3150E, ISL3153E, ISL3156E (SOIC PIN NUMBERS SHOWN)
+5V
14
V
CC
2 RO
3 RE
4 DE
5 DI
Z 10
D
GND
6, 7
Y 9
R
T
11 B
12 A
GND
6, 7
R
R
+
0.1µF
A 12
B 11
R
T
+
0.1µF
9 Y
10 Z
+5V
14
V
CC
D
DI 5
DE 4
RE 3
RO 2
4
FN6363.2
July 30, 2009
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