ISL32459EIBZ-T7A datasheet, PDF

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ISL32459EIBZ-T7A: DescriptionRS-422/RS-485 Interface IC 60V OVP, 20V CMR, -4 0 to +85, 5V RS-485; CategoryAnalog mixed-signal IC Drivers and interfaces; File Size1MB，23 Pages; ManufacturerRenesas Electronics Corporation; Websitehttps://www.renesas.com/

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ISL32459EIBZ-T7A Overview

RS-422/RS-485 Interface IC 60V OVP, 20V CMR, -4 0 to +85, 5V RS-485

ISL32459EIBZ-T7A Parametric

Parameter Name	Attribute value
Brand Name	Intersil
Parts packaging code	SOIC
package instruction	SOP,
Contacts	8
Reach Compliance Code	compliant
ECCN code	EAR99
Factory Lead Time	18 weeks
Other features	ALSO OPERATES IN VCC 4.5 TO 5.5 V
Differential output	YES
Number of drives	1
Input properties	DIFFERENTIAL SCHMITT TRIGGER
Interface integrated circuit type	LINE TRANSCEIVER
Interface standards	EIA-422; EIA-485
JESD-30 code	R-PDSO-G8
JESD-609 code	e3
length	4.9 mm
Humidity sensitivity level	2
Number of functions	1
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	260
Maximum receive delay	80 ns
Number of receiver bits	1
Maximum seat height	1.75 mm
Maximum supply voltage	3.6 V
Minimum supply voltage	3 V
Nominal supply voltage	3.3 V
surface mount	YES
technology	BICMOS
Temperature level	INDUSTRIAL
Terminal surface	Matte Tin (Sn) - annealed
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
maximum transmission delay	45 ns
width	3.9 mm
Base Number Matches	1

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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

The ISL3245xE 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 more robust on the

market.

Transmitters are RS-485 compliant with V

≥

4.5V and

deliver a 1.1V differential output voltage into the RS-485

specified 54Ω load even with V

= 3V. 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 (idle) bus. 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 2

for key features and configurations by

device number.

FN7921

Rev.2.00

Aug 31, 2017

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

Related Literature

•

ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E

ISL32458E

, and

ISL32459E

product pages

VOLTAGE (V)

VID = ±1V

2Mbps

COMMON-MODE RANGE (V)

= 3V

-7

-20

TIME (200ns/ DIV)

STANDARD RS-485

TRANSCEIVER

ISL3245XE

FIGURE 1. EXCEPTIONAL ISL32453E RX OPERATES AT >1Mbps

EVEN WITH ±20V COMMON-MODE VOLTAGE

FIGURE 2. TRANSCEIVERS DELIVER SUPERIOR COMMON-MODE

RANGE vs STANDARD RS-485 DEVICES

FN7921 Rev.2.00

Aug 31, 2017

Page 1 of 23

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