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RS-485/RS-422 Transceivers. ISL32453E Datasheet

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RS-485/RS-422 Transceivers. ISL32453E Datasheet






ISL32453E Transceivers. Datasheet pdf. Equivalent






ISL32453E Transceivers. Datasheet pdf. Equivalent


ISL32453E

Part

ISL32453E

Description

RS-485/RS-422 Transceivers



Feature


DATASHEET ISL32450E, ISL32452E, ISL3245 3E, ISL32455E, ISL32457E, ISL32458E, IS L32459E ±60V Fault Protected, 3.3V to 5V, ±20V Common-Mode Range, RS-485/RS- 422 Transceivers with Cable Invert and ±15kV ESD FN7921 Rev.3.00 Feb 14, 201 9 The ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E, ISL32458E, and I SL32459E are 3.3V to 5V powered, fault protected, extended C.
Manufacture

Renesas

Datasheet
Download ISL32453E Datasheet


Renesas ISL32453E

ISL32453E; ommon-Mode Range (CMR) differential tran sceivers for balanced communication. Th e RS-485 bus pins (driver outputs and r eceiver inputs) are protected against o vervoltages up to ±60V, and against ± 15kV ESD strikes. These transceivers op erate in environments with common-mode voltages up to ±20V (exceeds the RS-48 5 requirement), making this RS-485 fami ly one of the most ro.


Renesas ISL32453E

bust on the market. The transmitters are RS-485 compliant with VCC ≥ 4.5V and deliver a 1.1V differential output vol tage into the RS-485 specified 54Ω loa d even with VCC = 3V. The receiver (Rx) inputs feature a full fail-safe design that ensures a log .

Part

ISL32453E

Description

RS-485/RS-422 Transceivers



Feature


DATASHEET ISL32450E, ISL32452E, ISL3245 3E, ISL32455E, ISL32457E, ISL32458E, IS L32459E ±60V Fault Protected, 3.3V to 5V, ±20V Common-Mode Range, RS-485/RS- 422 Transceivers with Cable Invert and ±15kV ESD FN7921 Rev.3.00 Feb 14, 201 9 The ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E, ISL32458E, and I SL32459E are 3.3V to 5V powered, fault protected, extended C.
Manufacture

Renesas

Datasheet
Download ISL32453E Datasheet




 ISL32453E
DATASHEET
ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E, ISL32458E, ISL32459E
±60V Fault Protected, 3.3V to 5V, ±20V Common-Mode Range, RS-485/RS-422
Transceivers with Cable Invert and ±15kV ESD
FN7921
Rev.3.00
Feb 14, 2019
The ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E,
ISL32458E, and ISL32459E are 3.3V to 5V powered, fault
protected, extended Common-Mode Range (CMR) differential
transceivers for balanced communication. The RS-485 bus
pins (driver outputs and receiver inputs) are protected against
overvoltages up to ±60V, and against ±15kV ESD strikes.
These transceivers operate in environments with
common-mode voltages up to ±20V (exceeds the RS-485
requirement), making this RS-485 family one of the most
robust on the market.
The transmitters are RS-485 compliant with VCC 4.5V and
deliver a 1.1V differential output voltage into the RS-485
specified 54Ω load even with VCC = 3V. The receiver (Rx) inputs
feature a full fail-safe design that ensures a logic-high Rx output
if the Rx inputs are floating, shorted, or on a terminated but
undriven (idle) bus. The Rx full fail-safe operation is maintained
even when the Rx input polarity is switched (cable invert
function on ISL32457E and ISL32459E).
The ISL32457E and ISL32459E include a cable invert function
that reverses the polarity of the Rx and Tx bus pins in case the
cable is misconnected during installation.
See Table 1 on page 4 for key features and configurations by
device number.
Related Literature
ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E,
ISL32458E, and ISL32459E device pages
Features
• Fault protected RS-485 bus pins . . . . . . . . . . . . . . up to ±60V
• Extended common-mode range. . . . . . . . . . . . . . . . . . . . ±20V
larger than required for RS-485
• ±15kV HBM ESD protection on RS-485 bus pins
• Wide supply range . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 5.5V
• Cable invert pin (ISL32457E and ISL32459E only)
corrects for reversed cable connections while maintaining
Rx full fail-safe functionality
• 1/4 unit load for up to 128 devices on the bus
• High transient overvoltage tolerance. . . . . . . . . . . . . . . . ±80V
• Full fail-safe (open, short, terminated) RS-485 receivers
• Choice of RS-485 data rates . . . . . . . . . . . . . . . . . . up to 20Mbps
• Low quiescent supply current. . . . . . . . . . . . . . . . . . . . . 2.1mA
Applications
• Utility meters and automated meter reading systems
• Air conditioning systems
• Security camera networks
• Building lighting and environmental control systems
• Industrial and process control networks
A
20
B
15
10
5
RO
0
VCC = 3V
VID = ±1V
2Mbps
TIME (200ns/DIV)
FIGURE 1. EXCEPTIONAL ISL32453E RX OPERATES AT >1Mbps
EVEN WITH ±20V COMMON-MODE VOLTAGE
20
12
0
-7
-20
STANDARD RS-485
TRANSCEIVER
ISL3245XE
FIGURE 2. TRANSCEIVERS DELIVER SUPERIOR COMMON-MODE
RANGE vs STANDARD RS-485 DEVICES
FN7921 Rev.3.00
Feb 14, 2019
Page 1 of 25




 ISL32453E
ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E, ISL32458E, ISL32459E
Typical Operating Circuits
+3.3V
+
14 0.1µF
2 RO
3 RE
VCC A 12
R B 11
RT
4 DE
5 DI D
Z 10
Y9
GND
6, 7
SOIC PINOUT SHOWN
+3.3V
0.1µF +
14
9 Y VCC
10 Z
D DI 5
DE 4
RT 11 B
12 A
RE 3
R RO 2
GND
6, 7
FIGURE 3. ISL32450E, ISL32453E FULL DUPLEX NETWORK
+3.3V
8 + 0.1µF
1 RO
2 RE
VCC
R
B/Z
7
RT
3 DE
A/Y 6
4 DI D
GND
5
0.1µF +
+3.3V
8
VCC
RT 7 B/Z
6 A/Y
D DI 4
DE 3
RE 2
R
GND
5
RO 1
FIGURE 4. ISL32452E, ISL32455E, ISL32458E HALF DUPLEX NETWORK
2 INV
1 RO
3 DE
+3.3V
8
VCC
R A/Y
B/Z
+ 0.1µF
6 RT
7
0.1µF +
+3.3V
8
VCC
RT
7 B/Z
R RO 1
6 A/Y
DE 3
4 DI D
GND
5
THE IC ON THE LEFT HAS THE CABLE CONNECTIONS
SWAPPED, SO THE INV PIN IS STRAPPED HIGH TO
INVERT THE RX AND TX POLARITY
GND
5
D DI 4
2
INV
FIGURE 5. ISL32457E, ISL32459E HALF DUPLEX NETWORK USING CABLE INVERT FUNCTION
FN7921 Rev.3.00
Feb 14, 2019
Page 2 of 25



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