DATASHEET
ISL3150E, ISL3152E, ISL3153E, ISL3155E, ISL3156E, ISL3158E
Large 3V Output Swing, 16.5kV ESD, Full Fail-Safe, 1/8 Unit Load,
RS-485/RS-422 Transceivers
FN6363
Rev.4.00
Apr 19, 2018
The ISL315xE family of 5V powered RS-485/RS-422
transceivers features high output drive and high ESD
protection. The devices withstand ±16.5kV IEC61000-4-
2 ESD strikes without latch-up. The large output voltage
of 3.1V typical into a 54Ω load provides high noise
immunity, and enables the drive of up to 8000ft long bus
segments, or eight 120Ω terminations in a star topology.
These devices possess less than 125µA bus input
currents, thus constituting a true 1/8 unit load. The high
output drive combined with the low bus input currents
allows for connecting up to 512 transceivers on the same
bus.
The receiver inputs feature a full fail-safe design that
turns the receiver outputs high when the bus inputs are
open or shorted.
The ISL315xE family includes half and full-duplex
transceivers with active-high driver-enable pins and
active-low receiver enable pins. These transceivers
support data rates of 115kbps, 1Mbps, and 20Mbps.
Their performance is characterized from -40°C to +85°C.
Related Literature
For a full list of related documents, visit our website
• ISL3150E, ISL3152E, ISL3153E, ISL3155E,
ISL3156E, and ISL3158E product pages
Features
• High VOD: 3.1V (Typ) into RD = 54Ω
• Low bus currents: 125µA constitutes a true 1/8 unit
load
• Allows for up to 512 transceivers on the bus
• ±16.5kV ESD protection on bus I/O pins
• High transient overvoltage tolerance of ±100V
• Full fail-safe outputs for open or shorted inputs
• Hot plug capability - driver and receiver outputs
remain high-impedance during power-up and
power-down
• Supported data rates: 115kbps, 1Mbps, 20Mbps
• Low supply current (driver disabled): 550µA
• Ultra-low shutdown current: 70nA
Applications
• Automated utility e-meter reading systems
• High node count systems
• PROFIBUS and Fieldbus systems in factory
automation
• Security camera networks
• Lighting, elevator, and HVAC control systems in
building automation
• Industrial process control networks
• Networks with star topology
• Long-haul networks in coal mines and oil rigs
140
130
120 6 x 120Ω
110 Terms
100
90 8 x 120Ω
80 Terms
2 x 120Ω
Terms
70
60
50
40
30
20 1 x 120Ω
10 Term
0
0 1 1.5 2 3 4
Diff ere ntial O utput Voltage (V)
5
3
I SL31 58 E
2
1
0
St andard
-1 Transceiver
-2
20Mbps, 150' UTP, Double 120Ω Termination
-3
20 ns/Di v
Figure 1. Typical Driver Output Performance of ISL315xE Transceivers
FN6363 Rev.4.00
Apr 19, 2018
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