Datasheet > ISL4221E

ISL4221E

更新时间： 2024-11-25 14:57:03

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
24页	365K
描述
QFN Packaged, ±15kV ESD Protected, +2.7V to +5.5V, 150nA, 250kbps, RS-232 Transmitters/Receivers

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ISL4221E 数据手册

Datasheet

ISL3232E, ISL4221E, ISL4223E

QFN Packaged, ±15kV ESD Protected, +2.7V to +5.5V, 150nA, 250kbps,

RS-232 Transmitters/Receivers

The ISL3232E, ISL4221E, and ISL4223E devices are

2.7V to 5.5V powered RS-232 transmitters/receivers

Features

• Available in near chip scale QFN (5mmx5mm)

package, which is 40% smaller than a 20 Ld

TSSOP

that meet ElA/TIA-232 and V.28/V.24 specifications,

even at V = 3.0V. They provide ±15kV ESD

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

Model) on transmitter outputs and receiver inputs

(RS-232 pins). Targeted applications are PDAs,

Palmtops, and hand-held products where the low

operational power consumption and even lower

standby power consumption are critical. Efficient

on-chip charge pumps, coupled with manual and

automatic powerdown functions, reduce the standby

supply current to a 150nA 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.

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

(IEC61000)

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

• RS-232 compatible with V = 2.7V

• On-chip voltage converters require only four

external 0.1µF capacitors

• Manual and automatic powerdown features (except

ISL3232E)

• Receiver hysteresis for improved noise immunity

• Assured minimum data rate: 250kbps

The ISL4221E is a 1 driver, 1 receiver device and the

ISL3232E and ISL4223E are 2 driver, 2 receiver

devices that, coupled with the 5mmx5mm QFN

package, provide the industry’s smallest, lowest

power serial port suitable for PDAs, and hand-held

applications. The 5mmx5mm QFN requires 40% less

board area than a 20 Ld TSSOP, and is nearly 20%

thinner.

• Wide power supply range: single +2.7V to +5.5V

• Low supply current in powerdown state: 150nA

• Pb-free (RoHS compliant)

Applications

• Any space-constrained system requiring RS-232

ports

The ISL4221E and ISL4223E versions feature an

automatic powerdown function that powers down the

on-chip power supply and driver circuits. Automatic

powerdown occurs when an attached peripheral

device is shut off or the RS-232 cable is removed, and

conserves system power automatically without

changes to the hardware or operating system. The

ISL4221E and ISL4223E power back up automatically

when a valid RS-232 voltage is applied to any

receiver input.

○ Battery powered and portable equipment

○ Hand-held products (GPS receivers, bar code

scanners, etc.)

○ PDAs and Palmtops, data cables

○ Cellular/mobile phones, digital cameras

Related Literature

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

• ISL3232E, ISL4221E, and ISL4223E device pages

Table 1 summarizes the features of the IC’s and

AN9863 summarizes the features of each device

comprising the 3V RS-232 family.

Table 1.

Summary of Features

Number Number

QFN Pkg.

Available?

Rx. Enable

Data Rate (kbps) Function?

Manual

Powerdown?

Automatic Powerdown

Function?

Part Number

ISL4221E

of Tx.

of Rx.

Yes

250

Yes

ISL3232E

Yes

ISL4223E

Yes

FN6045 Rev.7.00

May.2.19

Page 1 of 24

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与ISL4221E相关器件

型号	品牌	获取价格	描述	数据表
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 +
ISL4221EIRZ-T	INTERSIL	获取价格	QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 150Nanoamp, 250kBps, RS-232 Transmitt
ISL4223E	INTERSIL	获取价格	QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 150Nanoamp, 250kBps, RS-232 Transmitt
ISL4223E	RENESAS	获取价格	QFN Packaged, ±15kV ESD Protected, +2.7V to +
ISL4223EIR	INTERSIL	获取价格	QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 150Nanoamp, 250kBps, RS-232 Transmitt
ISL4223EIR-T	INTERSIL	获取价格	QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 150Nanoamp, 250kBps, RS-232 Transmitt
ISL4223EIRZ	INTERSIL	获取价格	QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 150Nanoamp, 250kBps, RS-232 Transmitt

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