DATASHEET
ISL32173E, ISL32175E, ISL32177E, ISL32273E, ISL32275E,
ISL32277E
These Intersil devices are ±16.5kV IEC61000-4-2 ESD
protected, 3.0V to 5.5V powered, quad receivers for balanced
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.
The
ISL32173E, ISL32175E, ISL32177E
are high data rate
receivers that operate at data rates up to 80Mbps. Their 8ns
maximum propagation delay skew (tolerance) guarantees
excellent part-to-part matching. The
ISL32273E, ISL32275E,
ISL32277E
are reduced supply current versions that operate at
data rates up to 20Mbps.
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), a two channel EN12/EN34 (ISL32175E
pinout), or a vers atile individual channel enable (see
Table 1).
A 26% smaller footprint is available with the ISL32177E and
ISL32277E QFN packages and these two devices also feature
a logic supply pin (V
L
). The V
L
supply sets the switching points
of the enable inputs and the receiver outputs’ V
OH
, to levels
compatible with a lower supply voltage in mixed voltage
systems. Individual channel and group enable pins increase
the ISL32177E and ISL32277E’s flexibility.
FN7529
Rev 4.00
April 25, 2016
Features
• IEC61000 ESD protection (RS-485 inputs) . . . . . . . . ±16.5kV
- Class 3 ESD on all other pins . . . . . . . . . . . . . . . .>8kV HBM
• Wide supply range . . . . . . . . . . . . . . . . . . . . . . . . . 3.0V to 5.5V
• Wide common-mode range . . . . . . . . . . . . . . . . . -7V to +12V
• 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
• Available in industry standard pinouts (ISL32173E/
ISL32175E ) and a 4x4 QFN (ISL32X77E) with added
features
• Logic supply pin (V
L
) eases operation in mixed supply
systems (ISL32X77E)
• High data rates. . . . . . . . . . . . . . . . up to 80Mbps or 20Mbps
• Low shutdown supply current. . . . . . . . . . . . . . . . . . . . . . 60µA
• Tri-statable Rx outputs
• 5V tolerant logic inputs when V
CC
= 3.3V
Applications
• Telecom equipment
• Motor controllers/encoders
• Programmable logic controllers
• Industrial/process control networks
RECEIVER INPUT (V)
V
CC
= 3.3V, +25°C
# of DEVICES = 270
80Mbps
1
0
-1
A-B
V
CC
= 3.3V
FREQUENCY
3.0
RECEIVER OUTPUT (V)
2.5
2.0
1.5
1.0
0.5
0
-0.5
V
L
= 2.5V
V
L
= 1.8V
V
L
= 1.6V
9.67
9.80
9.92
10.04
10.17
10.29
10.41
10.54
10.66
10.78
10.91
11.03
11.15
11.28
11.40
RECEIVER PROPAGATION DELAY (ns)
11.52
TIME (4ns/DIV)
FIGURE 1. ISL32177E PART-TO-PART PROPAGATION DELAY VARIABILITY
FIGURE 2. ISL3217XE DATA RATE AND V
L
PERFORMANCE
FN7529 Rev 4.00
April 25, 2016
Page 1 of 21
ISL32173E, ISL32175E, ISL32177E, ISL32273E, ISL32275E, ISL32277E
TABLE 1. SUMMARY OF FEATURES
DATA
RATE
(Mbps)
80
80
HOT
PLUG?
YES
YES
V
L
SUPPLY
PIN?
NO
NO
Rx ENABLE
TYPE
EN, EN
EN12, EN34
MAX. TOTAL
SUPPLY
CURRENT (mA)
15
15
LOW POWER
SHUTDOWN?
YES
YES
PIN
COUNT
16
16
PART NUMBER
ISL32173E
ISL32175E
(No longer available,
recommended replacement:
ISL32173E)
ISL32177E
ISL32273E
ISL32275E
ISL32277E
FUNCTION
4 Rx
4 Rx
4 Rx
4 Rx
4 Rx
4 Rx
80
20
20
20
YES
YES
YES
YES
YES
NO
NO
YES
INDIVIDUAL AND
GROUP ENABLES
EN, EN
EN12, EN34
INDIVIDUAL AND
GROUP ENABLES
15
5.5
5.5
5.5
YES
YES
YES
YES
24
16
16
24
Pin Configurations
ISL32173E, ISL32273E
(16 LD N-SOIC, 16 LD TSSOP)
TOP VIEW
B1 1
A1 2
RO1 3
EN 4
RO2 5
A2 6
B2 7
GND 8
R
R
R
R
16 V
CC
15 B4
14 A4
13 RO4
12 EN
11 RO3
10 A3
9 B3
ISL32175E, ISL32275E
(16 LD N-SOIC, 16 LD TSSOP)
TOP VIEW
B1 1
A1 2
RO1 3
EN12 4
RO2 5
A2 6
B2 7
GND 8
R
R
R
R
16 V
CC
15 B4
14 A4
13 RO4
12 EN34
11 RO3
10 A3
9 B3
ISL32177E, ISL32277E
(24 LD QFN)
TOP VIEW
V
CC
A1
B1
B4
20
A4
19
18 RO4
R
R
17 EN4
16 EN3
15 EN
R
14 NC
13 RO3
7
A2
8
B2
9
SHDNEN
10
GND
11
B3
12
A3
V
L
21
24
RO1
EN1
EN2
EN
NC
RO2
1
2
3
4
5
6
23
22
PAD
(GND)
R
FN7529 Rev 4.00
April 25, 2016
Page 2 of 21
ISL32173E, ISL32175E, ISL32177E, ISL32273E, ISL32275E, ISL32277E
Pin Descriptions
ISL32173E,
ISL32273E
PIN NUMBER
4, 12
ISL32175E,
ISL32275E
PIN NUMBER
-
ISL32177E,
ISL32277E
PIN NUMBER
4, 15
PIN NAME
EN, EN
FUNCTION
Group driver output enables, that are internally pulled high to V
CC
. All receiver
outputs are enabled by driving EN high OR EN low and the outputs are all high
impedance when EN is low AND EN is high (i.e., if using only the active high
EN, connect EN to V
CC
or V
L
through a 1kΩ resistor; if using only the active
low EN, connect EN directly to GND). If the group enable function is not
required, connect EN to V
CC
(or V
L
) through a 1kΩ or greater resistor, or
connect EN directly to GND (ISL32X73E and ISL32X77E only).
Paired driver output enables, that are internally pulled high to V
CC
. Driving
EN12 (EN34) high enables the channel 1 and 2
(3 and 4) RO outputs. Driving EN12 (EN34) low disables the channel 1 and 2
(3 and 4) outputs. If the enable function isn’t required, connect EN12 and
EN34 to V
CC
(or V
L
) through a 1kΩ or greater resistor (ISL32X75E only).
Individual receiver output enables that are internally pulled high to V
CC
.
Forcing ENX high (along with EN high OR EN low) enables the channel X
output (ROX). Driving ENX low disables the channel X output, regardless of
the states of EN and EN. If the individual channel enable function isn’t
required, connect ENX to V
CC
(or V
L
) through a 1kΩ or greater resistor
(ISL32X77E only).
Low power SHDN mode enable that is internally pulled high to V
CC
. A high
level allows the ISL32X77E to enter a low power mode when all channels are
disabled. A low level prevents the device from entering the low power mode
(ISL32X77E only).
Channel X receiver output: If A - B
≥
200mV, RO is high;
If A - B
≤
-200mV, RO is low. RO = High if A and B are unconnected (floating).
Ground connection. This is also the potential of the QFN thermal pad.
±16.5kV IEC61000-4-2 ESD protected RS-485/422 level, channel X
noninverting receiver input.
±16.5kV IEC61000-4-2 ESD protected RS-485/422 level, channel X inverting
receiver input.
System power supply input (3.0V to 5.5V). On devices with a V
L
pin powered
from a separate supply, power up V
CC
first.
Logic power supply input (1.4V to V
CC
) that powers all the TTL/CMOS inputs
and outputs (logic pins). V
L
sets the V
IH
and V
IL
levels of the enable and
SHDNEN pins and sets the V
OH
level of the RO pins. Connect the V
L
pin to the
lower voltage power supply of a logic device (e.g., UART or µcontroller)
interfacing with the ISL32X77E logic pins. If V
L
and V
CC
are different
supplies, power up this supply after V
CC
and keep V
L
≤
V
CC
. To minimize input
current and SHDN supply current, logic pins that are strapped high externally
(preferably through a 1kΩ resistor) should connect to V
CC
, but they may also
connect to V
L
(ISL32X77E only).
No Connection
-
4, 12
-
EN12, EN34
-
-
2, 3,
16, 17
EN1, EN2,
EN3, EN4
-
-
9
SHDNEN
3, 5,
11, 13
8
2, 6,
10, 14
1, 7,
9, 15
16
-
3, 5,
11, 13
8
2, 6,
10, 14
1, 7,
9, 15
16
-
1, 6,
13, 18
10, PAD
24, 7,
12, 19
23, 8,
11, 20
22
21
RO1, RO2,
RO3, RO4
GND
A1, A2,
A3, A4
B1, B2,
B3, B4
V
CC
V
L
-
-
5, 14
NC
FN7529 Rev 4.00
April 25, 2016
Page 3 of 21
ISL32173E, ISL32175E, ISL32177E, ISL32273E, ISL32275E, ISL32277E
Ordering Information
PART NUMBER
(Notes
3, 4)
ISL32173EIBZ (Note
1)
ISL32173EFBZ (Note
1)
ISL32173EIVZ (Note
1)
ISL32173EFVZ (Note
1)
ISL32175EIBZ (No longer available,
recommended replacement:
ISL32173EIBZ) (Note
1)
ISL32175EFBZ (No longer available,
recommended replacement:
ISL32173EFBZ) (Note
1)
ISL32175EIVZ (No longer available,
recommended replacement:
ISL32173EIVZ) (Note
1)
ISL32175EFVZ (No longer available,
recommended replacement:
ISL32173EFVZ) (Note
1)
ISL32177EIRZ (Note
2)
ISL32177EFRZ (Note
2)
ISL32273EIBZ (Note
1)
ISL32273EFBZ (Note
1)
ISL32273EIVZ (Note
1)
ISL32273EFVZ (Note
1)
ISL32275EIBZ (Note
1)
ISL32275EFVZ (Note
1)
ISL32277EIRZ (Note
2)
ISL32277EFRZ (Note
2)
NOTES:
1. Add “-T” suffix for 2.5k unit tape and reel. Please refer to
TB347
for details on reel specifications.
2. Add “-T” suffix for 6k unit tape and reel. Please refer to
TB347
for details on reel specifications.
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 page for
ISL32173E, ISL32175E, ISL32177E, ISL32273E, ISL32275E, ISL32277E.
For more information on MSL please see tech brief
TB363.
PART
MARKING
ISL32173 EIBZ
ISL32173 EFBZ
32173 EIVZ
32173 EFVZ
ISL32175 EIBZ
TEMP. RANGE
(°C)
-40 to +85
-40 to +125
-40 to +85
-40 to +125
-40 to +85
PACKAGE
(RoHS Compliant)
16 Ld SOIC
16 Ld SOIC
16 Ld TSSOP
16 Ld TSSOP
16 Ld SOIC
PKG.
DWG. #
M16.15
M16.15
MDP0044
MDP0044
M16.15
ISL32175 EFBZ
-40 to +125
16 Ld SOIC
M16.15
32175 EIVZ
-40 to +85
16 Ld TSSOP
MDP0044
32175 EFVZ
-40 to +125
16 Ld TSSOP
MDP0044
321 77EIRZ
321 77EFRZ
ISL32273 EIBZ
ISL32273 EFBZ
32273 EIVZ
32273 EFVZ
ISL32275 EIBZ
32275 EFVZ
322 77EIRZ
322 77EFRZ
-40 to +85
-40 to +125
-40 to +85
-40 to +125
-40 to +85
-40 to +125
-40 to +85
-40 to +125
-40 to +85
-40 to +125
24 Ld QFN
24 Ld QFN
16 Ld SOIC
16 Ld SOIC
16 Ld TSSOP
16 Ld TSSOP
16 Ld SOIC
16 Ld TSSOP
24 Ld QFN
24 Ld QFN
L24.4x4C
L24.4x4C
M16.15
M16.15
MDP0044
MDP0044
M16.15
MDP0044
L24.4x4C
L24.4x4C
FN7529 Rev 4.00
April 25, 2016
Page 4 of 21
ISL32173E, ISL32175E, ISL32177E, ISL32273E, ISL32275E, ISL32277E
Truth Tables
RECEIVER OUTPUT (ROX ENABLED, ALL VERSIONS)
INPUTS (A-B)
≥0.2V
≤-0.2V
Inputs Open (Floating)
OUTPUT (RO)
1
0
1
Truth Tables
(Continued)
RECEIVER ENABLE (ISL32175E, ISL32275E)
INPUTS
EN12
0
0
1
EN34
0
1
0
1
RO1
Z*
Z
EN
EN
OUTPUTS
RO2
Z*
Z
EN
EN
RO3
Z*
EN
Z
EN
RO4
Z*
EN
Z
EN
RECEIVER ENABLE (ISL32173E, ISL32273E)
INPUTS
EN
X
1
0
EN
0
X
1
OUTPUTS
ROX
ENABLED
ENABLED
DISABLED*
1
NOTE: *Low power SHDN mode when all outputs disabled; Z = Tri-state
RECEIVER ENABLE (ISL32177E, ISL32277E)
INPUTS
ENX
0
EN1-4 = 0
X
X
1
1
EN EN
X
X
0
0
X
1
X
X
1
1
0
X
SHDNEN
0
1
0
1
X
X
ROX
Z
Z*
Z
Z*
EN
EN
OUTPUTS
COMMENTS
Chan X output disabled
All outputs disabled
All outputs disabled
All outputs disabled
Individual ENX controls chan
NOTE: *Low power SHDN mode when disabled
NOTE: * Low power SHDN mode; Z = Tri-state
Typical Operating Circuits (1 of 4 Channels Shown)
+3.3V TO 5V
+
16
V
CC
ISL32X73E
3 RO
12 EN
A
R
B
2
1
R
T
2
3
Y
Z
D
0.1µF
0.1µF
+
16
V
CC
ISL32X72E
DI 1
EN 4
EN 12
GND
8
EN
4
GND
8
+3.3V TO 5V
≥1kΩ
FIGURE 3. NETWORK USING GROUP ENABLES
FN7529 Rev 4.00
April 25, 2016
Page 5 of 21
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