Datasheet > ISL41387

ISL41387

更新时间： 2024-11-24 04:22:51

品牌	Logo	应用领域
英特矽尔 - INTERSIL		/
页数	文件大小	规格书
27页	1090K
描述
【15kV ESD Protected, Dual Protocol (RS-232/RS-485) Transceivers

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ISL41387 数据手册

ISL81387, ISL41387

Data Sheet

December 20, 2005

FN6201.1

±15kV ESD Protected, Dual Protocol

Features

(RS-232/RS-485) Transceivers

• User Selectable RS-232 or RS-485/422 Interface Port

(Two RS-232 Transceivers or One RS-485/422

Transceiver)

These devices are BiCMOS interface ICs that are user

configured as either a single RS-422/485 differential

transceiver, or as a dual (2 Tx, 2 Rx) RS-232 transceiver.

• ±15kV (HBM) ESD Protected Bus Pins (RS-232 or

RS-485)

In RS-232 mode, the on-board charge pump generates

RS-232 compliant ±5V Tx output levels, from a supply as low

as 4.5V. Four small 0.1µF capacitors are required for the

charge pump. The transceivers are RS-232 compliant, with

the Rx inputs handling up to ±25V, and the Tx outputs

handling ±12V.

• Flow-Through Pinouts Simplify Board Layouts

• Pb-Free Plus Anneal Available (RoHS Compliant)

• Large (2.7V) Differential V

Immunity in RS-485/422 Networks

for Improved Noise

OUT

• Full Failsafe (Open/Short) Rx in RS-485/422 Mode

• Loopback Mode Facilitates Board Self Test Functions

In RS-485 mode, the transceivers support both the RS-485

and RS-422 differential communication standards. The

RS-485 receiver features "full failsafe" operation, so the Rx

output remains in a high state if the inputs are open or

shorted together. The RS-485 transmitter supports up to

three data rates, two of which are slew rate limited for

problem free communications. The charge pump disables in

RS-485 mode, thereby saving power, minimizing noise, and

eliminating the charge pump capacitors.

• User Selectable RS-485 Data Rates . . . . . . . . . . 20Mbps

- Slew Rate Limited. . . . . . . . . . . . . . . . . . . . . . . 460kbps

- Slew Rate Limited (ISL41387 Only) . . . . . . . . . 115kbps

• Fast RS-232 Data Rate . . . . . . . . . . . . . . . Up to 650kbps

• Low Current Shutdown Mode. . . . . . . . . . . . . . . . . . .35µA

• QFN Package Saves Board Space (ISL41387 Only)

Both RS-232/485 modes feature loopback and shutdown

functions. The loopback mode internally connects the Tx

outputs to the corresponding Rx input, which facilitates the

implementation of board level self test functions. The outputs

remain connected to the loads during loopback, so

connection problems (e.g., shorted connectors or cables)

can be detected. The shutdown mode disables the Tx and

Rx outputs, disables the charge pump if in RS-232 mode,

and places the IC in a low current (20µA) mode.

• Logic Supply Pin (V ) Eases Operation in Mixed Supply

Systems (ISL41387 Only)

Applications

• Gaming Applications (e.g., Slot machines)

• Single Board Computers

• Factory Automation

• Security Networks

The ISL41387 is a QFN packaged device that offers

additional functionality, including a lower speed and edge

rate option (115kbps) for EMI sensitive designs, or to allow

longer bus lengths. It also features a logic supply voltage pin

• Industrial/Process Control Networks

• Level Translators (e.g., RS-232 to RS-422)

• Point of Sale Equipment

(V ) that sets the V

level of logic outputs, and the

switching points of logic inputs, to be compatible with

another supply voltage in mixed voltage systems. The QFN's

choice of active high or low Rx enable pins increases design

flexibility, allowing Tx/Rx direction control via a single signal

by connecting DEN and RXEN together.

For a dual port version of these devices, please see the

ISL81334/ISL41334 data sheet.

TABLE 1. SUMMARY OF FEATURES

PART

NO. OF

PORTS

RS-485 DATA

RATE (bps)

RS-232 DATA

RATE (kbps)

ACTIVE H or L

Rx ENABLE?

LOW POWER

SHUTDOWN?

PACKAGE OPTIONS

V PIN?

NUMBER

ISL81387

ISL41387

20 Ld SOIC, 20 Ld SSOP

40 Ld QFN (6 x 6mm)

20M, 460k

650

YES

20M, 460k, 115k

YES

BOTH

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.

12 3 4 5 6 7...27

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与ISL41387相关器件

型号	品牌	获取价格	描述	数据表
ISL41387IRZ	INTERSIL	获取价格	【15kV ESD Protected, 5V, Dual Protocol (RS-23
ISL41387IRZA	RENESAS	获取价格	LINE TRANSCEIVER, PQCC40, 6 X 6 MM, ROHS COMPLIANT, PLASTIC, MO-220VJJD, QFN-40
ISL41387IRZ-T	INTERSIL	获取价格	【15kV ESD Protected, 5V, Dual Protocol (RS-23
ISL4221	INTERSIL	获取价格	QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 150Nanoamp, 250kBps, RS-232 Transmitt
ISL4221E	INTERSIL	获取价格	QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 150Nanoamp, 250kBps, RS-232 Transmitt
ISL4221E	RENESAS	获取价格	QFN Packaged, ±15kV ESD Protected, +2.7V to +
ISL4221E_07	INTERSIL	获取价格	QFN Packaged, 【15kV ESD Protected, +2.7V to +
ISL4221EIR	INTERSIL	获取价格	QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 150Nanoamp, 250kBps, RS-232 Transmitt
ISL4221EIR-T	INTERSIL	获取价格	QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 150Nanoamp, 250kBps, RS-232 Transmitt
ISL4221EIRZ	INTERSIL	获取价格	QFN Packaged, 【15kV ESD Protected, +2.7V to +

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