DATASHEET
ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E
Quad, ±16.5kV ESD Protected, 3.0V to 5.5V, RS-485/RS-422 Receivers
FN7529
Rev 5.00
Jan 31, 2019
These Renesas devices are ±16.5kV IEC61000-4-2 ESD
Features
protected, 3.0V to 5.5V powered, quad receivers for balanced
• IEC61000 ESD protection (RS-485 inputs). . . . . . . . ±16.5kV
- Class 3 ESD on all other pins . . . . . . . . . . . . . . . .>8kV HBM
communication using the RS-485 and RS-422 standards. Each
receiver has low input currents (±200µA), so it presents a 1/4
unit load to the RS-485 bus and allows up to 128 receivers on
the bus.
• Wide supply range . . . . . . . . . . . . . . . . . . . . . . . . . 3.0V to 5.5V
• Wide common-mode range . . . . . . . . . . . . . . . . . -7V to +12V
The ISL32173E and ISL32177E are high data rate receivers
that operate at data rates up to 80Mbps. Their 8ns maximum
propagation delay skew (tolerance) ensures excellent part-to-
part matching. The ISL32273E, ISL32275E, and ISL32277E
are reduced supply current versions that operate at data rates
up to 20Mbps.
• Low part-to-part propagation delay tolerance (ISL3217xE)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8ns (max)
• Specified for +125°C operation
• Fail-safe open Rx inputs
• 1/4 unit load allows 128 devices on the bus
The receiver outputs are tri-statable and incorporate a hot plug
feature to keep them disabled during power-up and
power-down. Versions are available with a common EN/EN
(ISL32173E pinout) or a versatile individual channel enable
(see Table 1).
• Available in industry standard pinouts (ISL32173E) and a
4x4 QFN (ISL32x77E) with added features
• Logic supply pin (V ) eases operation in mixed supply
L
systems (ISL32x77E)
• High data rates. . . . . . . . . . . . . . . . up to 80Mbps or 20Mbps
• Low shutdown supply current. . . . . . . . . . . . . . . . . . . . . . 60µA
• Tri-statable Rx outputs
A 26% smaller footprint is available with the ISL32177E and
ISL32277E QFN packages and these two devices also feature
a logic supply pin (V ). The V supply sets the switching points
L
L
of the enable inputs and the receiver outputs’ V , to levels
OH
• 5V tolerant logic inputs when V = 3.3V
CC
compatible with a lower supply voltage in mixed voltage
systems. Individual channel and group enable pins increase
the flexibility of the ISL32177E and ISL32277E.
Applications
• Telecom equipment
Related Literature
For a full list of related documents, visit our website:
• Motor controllers/encoders
• Programmable logic controllers
• Industrial/process control networks
• ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E
device pages
V
= 3.3V, +25°C
CC
# of DEVICES = 270
V
= 3.3V
80Mbps
CC
1
0
A - B
-1
3.0
2.5
2.0
1.5
1.0
0.5
0
V
= 2.5V
L
V
= 1.8V
L
V
= 1.6V
L
-0.5
RECEIVER PROPAGATION DELAY (ns)
TIME (4ns/DIV)
FIGURE 1. ISL32177E PART-TO-PART PROPAGATION DELAY VARIABILITY
FIGURE 2. ISL3217xE DATA RATE AND V PERFORMANCE
L
FN7529 Rev 5.00
Jan 31, 2019
Page 1 of 23
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