Datasheet > ISL4270EIRZ

ISL4270EIRZ

更新时间： 2025-09-18 18:16:59

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
23页	347K
描述
QFN Packaged, ±15kV ESD Protected, +3V to +5.5V, 300nA, 250kbps, RS-232 Transceivers with Enhanced Automatic Powerdown and a Separate Logic Supply

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ISL4270EIRZ 数据手册

Datasheet

ISL4270E

QFN Packaged, ±15kV ESD Protected, +3V to +5.5V, 300nA, 250kbps, RS-232

Transceivers with Enhanced Automatic Powerdown and a Separate Logic Supply

The ISL4270E is a 3.0V to 5.5V powered RS-232

transceiver that meets ElA/TIA-232 and V.28/V.24

Features

• Available in near chip scale QFN (5mmx5mm)

package

specifications, even at V = 3.0V. It provides ±15kV

ESD protection (IEC61000-4-2 Air Gap and Human

Body Model) on transmitter outputs and receiver

inputs (RS-232 pins). Targeted applications are

notebook and laptop computers where the low

operational power consumption and even lower

standby power consumption is critical. Efficient

on-chip charge-pumps coupled with manual and

enhanced automatic powerdown functions reduce the

standby supply current to a 300nA trickle. The

5mmx5mm Quad Flat No-Lead (QFN) packaging and

the use of small, low value capacitors ensure board

space savings. Data rates greater than 250kbps are

ensured at worst case load conditions.

• V supply pin for compatibility with mixed voltage

systems

• ESD protection for RS-232 I/O pins to 15kV

(IEC61000)

• Manual and enhanced automatic powerdown

features

• Meets EIA/TIA-232 and V.28/V.24 specifications

at 3V

• On-chip charge pumps require only four external

0.1µF capacitors

• Receivers stay active in powerdown

• Very low supply current: 300µA

The ISL4270E features a V pin that adjusts the logic

pin output levels and input thresholds to values

compatible with the V powering the external logic

(for example, a UART).

• Guaranteed minimum data rate: 50kbps

• Wide power supply range: single +3V to +5.5V

• Low supply current in powerdown state: 300nA

• Pb-free (RoHS compliant)

This device includes an enhanced automatic

powerdown function that powers down the on-chip

power-supply and driver circuits. Automatic

powerdown occurs when all receiver and transmitter

inputs detect no signal transitions for a period of

30 seconds. The ISL4270E automatically powers

back up whenever it senses a transition on any

transmitter or receiver input.

Applications

• Any system requiring RS-232 communication ports

○ Battery powered, hand-held, and portable

equipment

Table 1 summarizes the features of the ISL4270E.

Application Note AN9863 summarizes the features of

each device comprising the 3V RS-232 family.

○ Industrial laptops, Palmtops, and PDAs

○ Digital cameras

Related Literature

For a full list of related documents, visit our website:

• ISL4270E device page

Table 1.

Summary of Features

No. of No. of

Data Rate

(kbps)

Rx. Enable

Function?

V_LLogic

Supply Pin?

Manual

Powerdown?

Enhanced Automatic

Powerdown Function?

Part Number

Tx.

Rx.

ISL4270E

250

Yes

FN6041 Rev.3.00

Apr 26, 2019

Page 1 of 23

12 3 4 5 6 7...23

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与ISL4270EIRZ相关器件

型号	品牌	获取价格	描述	数据表
ISL4270EIRZ-T	RENESAS	获取价格	±15kV ESD Protected, +3V to +5.5V, 300nA, 250
ISL43110	INTERSIL	获取价格	Low-Voltage, Single Supply, SPST, High Performance Analog Switches
ISL43110IB	INTERSIL	获取价格	Low-Voltage, Single Supply, SPST, High Performance Analog Switches
ISL43110IB	RENESAS	获取价格	1电路IC开关1：110欧姆8-SOIC
ISL43110IB-T	INTERSIL	获取价格	Low-Voltage, Single Supply, SPST, High Performance Analog Switches
ISL43110IB-T	RENESAS	获取价格	1电路IC开关1：110欧姆8-SOIC
ISL43110IBZ	INTERSIL	获取价格	Low-Voltage, Single Supply, SPST, High Performance Analog Switches
ISL43110IBZ	ROCHESTER	获取价格	1-CHANNEL, SGL POLE SGL THROW SWITCH, PDSO8, LEAD FREE, PLASTIC, MS-012-AA, SOIC-8
ISL43110IBZ-T	INTERSIL	获取价格	Low-Voltage, Single Supply, SPST, High Performance Analog Switches
ISL43110IBZ-T	RENESAS	获取价格	1电路IC开关1：110欧姆8-SOIC

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