ISL32475EIBZ-T datasheet, PDF - EEWORLD Datasheet

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ISL32475EIBZ-T: DescriptionRS-422/RS-485 Interface IC 8LD OVP -40+85 HI- ESD 5V +/-15V CMR; Categorysemiconductor Analog mixed-signal IC; File Size1MB，19 Pages; ManufacturerIntersil ( Renesas ); Websitehttp://www.intersil.com/cda/home/

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ISL32475EIBZ-T Overview

RS-422/RS-485 Interface IC 8LD OVP -40+85 HI- ESD 5V +/-15V CMR

ISL32475EIBZ-T Parametric

Parameter Name	Attribute value
Product Category	RS-422/RS-485 Interface IC
Manufacturer	Intersil ( Renesas )
RoHS	Details
Mounting Style	SMD/SMT
Package / Case	SOIC-8
Function	Transceiver
Data Rate	1 Mb/s
Number of Drivers	1 Driver
Number of Receivers	1 Receiver
Operating Supply Voltage	5 V
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C
Packaging	Reel
Moisture Sensitive	Yes
Output Type	Differential
Factory Pack Quantity	2500
Unit Weight	0.019048 oz

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DATASHEET

ISL32470E, ISL32472E, ISL32475E, ISL32478E

Fault Protected, Extended Common Mode Range, RS-485/RS-422 Transceivers

with ±16.5kV ESD

The ISL32470E, ISL32472E, ISL32475E, ISL32478E are

fault-protected, extended common mode range differential

transceivers that exceed the RS-485 and RS-422 standards for

balanced communication. The RS-485 bus pins (driver outputs

and receiver inputs) are fault protected against overvoltages up to

±60V and are protected against ±16.5kV ESD strikes without

latch-up. Additionally, these transceivers operate in environments

with common mode voltages up to ±15V (exceeds the RS-485

requirement), making this fault-protected RS-485 family one of

the more robust on the market.

Transmitters (Tx) deliver an exceptional 2.5V (typical) differential

output voltage into the RS-485 specified 54Ω load. This yields

better noise immunity than standard RS-485 ICs or allows up to

six 120Ω terminations in star topologies.

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 outputs feature high

drive levels; typically, 15mA @ V

= 1V (to ease the design of

opto-coupled isolated interfaces).

Half duplex (Rx inputs and Tx outputs multiplexed together) and

full duplex pinouts are available. See Table 1 on page 1 for key

features and configurations by device number.

For a fault-protected RS-485 transceiver with a ±25V extended

common mode range, please see the

ISL32490E

and

ISL32483E

data sheets.

FN7784

Rev 1.00

March 16, 2012

Features

• Fault-Protected RS-485 Bus Pins . . . . . . . . . . . . . . Up to ±60V

• Extended Common Mode Range . . . . . . . . . . . . . . . . . . . ±15V

Larger Than Required for RS-485

• 1/4 Unit Load for Up to 128 Devices on the Bus

•

16.5kV

HBM ESD Protection on RS-485 Bus Pins

• High Transient Over-Voltage Tolerance . . . . . . . . . . . . . . .±

80V

• Full Fail-Safe (Open, Short, Terminated) RS-485 Receivers

• High Rx I

for Opto-Couplers in Isolated Designs

• Hot Plug Circuitry: Tx and Rx Outputs Remain Three-State

During Power-Up/Power-Down

• Choice of RS-485 Data Rates . . . . . . . . . . . .250kbps to 15Mbps

• Low Quiescent Supply Current . . . . . . . . . . . . . . . . . . . 2.3mA

• Ultra Low Shutdown Supply Current . . . . . . . . . . . . . . . . 10µA

Applications

• Utility Meters/Automated Meter Reading Systems

• High Node Count RS-485 Systems

• PROFIBUS



and RS-485 Based Field Bus Networks, and

Factory Automation

• Security Camera Networks

• Building Lighting and Environmental Control Systems

• Industrial/Process Control Networks

VOLTAGE (V)

= ±1V

COMMON MODE RANGE

-7

-15

-5

TIME (20ns/DIV)

STANDARD RS-485

TRANSCEIVER

ISL3247xE

FIGURE 1. EXCEPTIONAL Rx OPERATES AT >15Mbps EVEN WITH

±15V COMMON MODE VOLTAGE

FIGURE 2. TRANSCEIVERS DELIVER SUPERIOR COMMON MODE

RANGE vs STANDARD RS-485 DEVICES

TABLE 1. SUMMARY OF FEATURES

PART NUMBER

ISL32470E

ISL32472E

HALF/FULL

DUPLEX

Full

Half

DATA RATE

(Mbps)

0.25

SLEW-RATE

LIMITED?

Yes

EN PINS?

Yes

HOT

PLUG?

Yes

QUIESCENT I

(mA)

2.3

LOW POWER

SHDN?

Yes

PIN COUNT

FN7784 Rev 1.00

March 16, 2012

Page 1 of 19

ISL32475EIBZ-T Related Products

	ISL32475EIBZ-T	ISL32472EIBZ	ISL32475EIBZ-T7A
Description	RS-422/RS-485 Interface IC 8LD OVP -40+85 HI- ESD 5V +/-15V CMR	MOSFET	IC TXRX RS485 FAULT PROT 8SOIC
Product Category	RS-422/RS-485 Interface IC	RS-422/RS-485 Interface IC	-
Manufacturer	Intersil ( Renesas )	Intersil ( Renesas )	-
RoHS	Details	Details	-
Mounting Style	SMD/SMT	SMD/SMT	-
Package / Case	SOIC-8	SOIC-8	-
Function	Transceiver	Transceiver	-
Data Rate	1 Mb/s	250 kb/s	-
Number of Drivers	1 Driver	1 Driver	-
Number of Receivers	1 Receiver	1 Receiver	-
Operating Supply Voltage	5 V	5 V	-
Minimum Operating Temperature	- 40 C	- 40 C	-
Maximum Operating Temperature	+ 85 C	+ 85 C	-
Packaging	Reel	Tube	-
Moisture Sensitive	Yes	Yes	-
Output Type	Differential	Differential	-
Factory Pack Quantity	2500	98	-
Unit Weight	0.019048 oz	0.019048 oz	-

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