Datasheet > ISL81387IBZ-T

ISL81387IBZ-T

更新时间： 2024-11-11 03:11:07

品牌	Logo	应用领域
英特矽尔 - INTERSIL		/
页数	文件大小	规格书
27页	999K
描述
【15kV ESD Protected, 5V, Dual Protocol (RS-232/RS-485) Transceivers

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ISL81387IBZ-T 数据手册

ISL81387, ISL41387

Data Sheet

November 21, 2007

FN6201.3

±15kV ESD Protected, 5V, Dual Protocol

Features

(RS-232/RS-485) Transceivers

• 5V Powered, User Selectable RS-232 or RS-485, RS-422

Interface Port (Two RS-232 Transceivers or One RS-485,

RS-422 Transceiver)

These devices are BiCMOS interface ICs that are user

configured as either a single RS-422, RS-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 (RoHS Compliant)

• Large (2.7V) Differential V

OUT

for Improved Noise

Immunity in RS-485, RS-422 Networks

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

NUMBER

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?

ISL81387

ISL41387

20 Ld SOIC, 20 Ld SSOP

20M, 460k

650

YES

40 Ld QFN (6mmx6mm) 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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ISL81387IBZ-T 替代型号

型号	品牌	替代类型	描述	数据表
ISL81387IBZ	INTERSIL	类似代替	【15kV ESD Protected, 5V, Dual Protocol (RS-23

与ISL81387IBZ-T相关器件

型号	品牌	获取价格	描述	数据表
ISL81387IBZ-T13	RENESAS	获取价格	LINE TRANSCEIVER
ISL81401	RENESAS	获取价格	40V Bidirectional 4- Switch Synchronous Buck-Boost Controller
ISL81401A	RENESAS	获取价格	40V Unidirectional 4-Switch Synchronous Buck-Boost Controller
ISL81483	INTERSIL	获取价格	1/8 Unit Load, 5V, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers
ISL81483	RENESAS	获取价格	5V, Half Duplex, 250kbps Slew Rate Limited, RS-485/RS-422 Transceiver
ISL81483IB	INTERSIL	获取价格	1/8 Unit Load, 5V, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers
ISL81483IB	RENESAS	获取价格	LINE TRANSCEIVER, PDSO8, PLASTIC, MS-012AA, SOIC-8
ISL81483IB-T	RENESAS	获取价格	LINE TRANSCEIVER, PDSO8, PLASTIC, MS-012-AA, SOIC-8
ISL81483IBZ	INTERSIL	获取价格	1/8 Unit Load, 5V, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers
ISL81483IBZ-T	RENESAS	获取价格	5V, Half Duplex, 250kbps Slew Rate Limited, RS-485/RS-422 Transceiver; PDIP8, SOIC8; Temp

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