ISL3171E datasheet, PDF - EEWORLD Datasheet

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ISL3171E: Description【15kV ESD Protected, 3.3V, Full Fail-Safe, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers; File Size761KB，19 Pages; ManufacturerIntersil ( Renesas ); Websitehttp://www.intersil.com/cda/home/

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ISL3171E Overview

【15kV ESD Protected, 3.3V, Full Fail-Safe, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers

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ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E,

ISL3175E, ISL3176E, ISL3177E, ISL3178E

Data Sheet

July 11, 2007

FN6307.3

±15kV

ESD Protected, 3.3V, Full Fail-Safe,

Low Power, High Speed or Slew Rate

Limited, RS-485/RS-422 Transceivers

The Intersil ISL317XE are

15kV IEC61000 ESD Protected,

3.3V-powered, single transceivers that meet both the

RS-485 and RS-422 standards for balanced communication.

These devices have very low bus currents (+125mA/-100mA),

so they present a true “1/8 unit load” to the RS-485 bus. This

allows up to 256 transceivers on the network without violating

the RS-485 specification’s 32 unit load maximum, and without

using repeaters. For example, in a remote utility meter reading

system, individual meter readings are routed to a concentrator

via an RS-485 network, so the high allowed node count

minimizes the number of repeaters required.

Receiver (Rx) inputs feature a “Full Fail-Safe” design, which

ensures a logic high Rx output if Rx inputs are floating,

shorted, or terminated but undriven.

Hot Plug circuitry ensures that the Tx and Rx outputs remain

in a high impedance state while the power supply stabilizes.

The ISL3170E through ISL3175E utilize slew rate limited

drivers which reduce EMI, and minimize reflections from

improperly terminated transmission lines, or unterminated

stubs in multidrop and multipoint applications. Slew rate limited

versions also include receiver input filtering to enhance noise

immunity in the presence of slow input signals.

The ISL3170E, ISL3171E, ISL3173E, ISL3174E, ISL3176E,

ISL3177E are configured for full duplex (separate Rx input

and Tx output pins) applications. The half duplex versions

multiplex the Rx inputs and Tx outputs to allow transceivers

with output disable functions in 8 Ld packages.

Features

• IEC61000 ESD Protection on RS-485 I/O Pins

. . . . . ±

15kV

- Class 3 ESD Level on all Other Pins . . . . . . >7kV HBM

• Full Fail-safe (Open, Short, Terminated/Floating)

Receivers

• Hot Plug - Tx and Rx Outputs Remain Three-state During

Power-up (Only Versions with Output Enable Pins)

• True 1/8 Unit Load Allows up to 256 Devices on the Bus

• Single 3.3V Supply

• High Data Rates . . . . . . . . . . . . . . . . . . . . . . up to 20Mbps

• Low Quiescent Supply Current . . . . . . . . . . .800

A (Max)

- Ultra Low Shutdown Supply Current . . . . . . . . . . .10nA

• -7V to +12V Common Mode Input/Output Voltage Range

• Half and Full Duplex Pinouts

• Three State Rx and Tx Outputs Available

• Current Limiting and Thermal Shutdown for driver

Overload Protection

• Tiny MSOP Packages Consume 50% Less Board Space

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Automated Utility Meter Reading Systems

• High Node Count Systems

• Field Bus Networks

• Security Camera Networks

• Building Environmental Control/ Lighting Systems

• Industrial/Process Control Networks

TABLE 1. SUMMARY OF FEATURES

PART

NUMBER

ISL3170E

ISL3171E

ISL3172E

ISL3173E

ISL3174E

ISL3175E

ISL3176E

ISL3177E

ISL3178E

HALF/FULL DATA RATE

DUPLEX

(Mbps)

FULL

HALF

FULL

HALF

FULL

HALF

0.25

0.5

SLEW-RATE

LIMITED?

YES

HOT

PLUG?

YES

# DEVICES

ON BUS

256

RX/TX

ENABLE?

YES

QUIESCENT

(mA)

510

LOW POWER

SHUTDOWN?

YES

COUNT

10, 14

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

ISL3171E Related Products

	ISL3171E	ISL3170E	ISL3170E_07	ISL3172E
Description	【15kV ESD Protected, 3.3V, Full Fail-Safe, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers	【15kV ESD Protected, 3.3V, Full Fail-Safe, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers	【15kV ESD Protected, 3.3V, Full Fail-Safe, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers	【15kV ESD Protected, 3.3V, Full Fail-Safe, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers

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