Datasheet > ISL4221

ISL4221

更新时间： 2024-11-19 22:47:59

品牌	Logo	应用领域
英特矽尔 - INTERSIL		/
页数	文件大小	规格书
13页	391K
描述
QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 150Nanoamp, 250kBps, RS-232 Transmitters/Receivers

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数据手册

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ISL4221 数据手册

ISL4221E, ISL4223E

Data Sheet

August 2004

FN6045.1

QFN Packaged, +/-15kV ESD Protected,

+2.7V to +5.5V, 150Nanoamp, 250kBps,

RS-232 Transmitters/Receivers

Features

• Available in Near Chip Scale QFN (5mmx5mm) Package

which is 40% Smaller than a 20 Lead TSSOP

The Intersil ISL422XE devices are 2.7V to 5.5V powered

RS-232 transmitters/receivers which meet ElA/TIA-232 and

• ESD Protection for RS-232 I/O Pins to ±15kV (IEC61000)

• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V

V.28/V.24 specifications, even at V

= 3.0V. Additionally,

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, and even lower standby, power consumption is

critical. Efficient on-chip charge pumps, coupled with manual

and automatic powerdown functions, reduce the standby

supply current to a 150nA trickle. Tiny 5mm x 5mm Quad

Flat No-Lead (QFN) packaging and the use of small, low

value capacitors ensure board space savings as well. Data

rates greater than 250kBps are guaranteed at worst case

load conditions.

• RS-232 Compatible with V

= 2.7V

• On-Chip Voltage Converters Require Only Four External

0.1µF Capacitors

• Manual and Automatic Powerdown Features

• Receiver Hysteresis For Improved Noise Immunity

• Guaranteed Minimum Data Rate . . . . . . . . . . . . 250kBps

• Wide Power Supply Range. . . . . . . Single +2.7V to +5.5V

• Low Supply Current in Powerdown State. . . . . . . . .150nA

• Pb-free Available as an Option

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

ISL4223E is a 2 driver, 2 receiver device that, coupled with

the 5x5 QFN package, provide the industry’s smallest,

lowest power serial port suitable for PDAs, and hand-held

applications. The 5x5 QFN requires 40% less board area

than a 20 lead TSSOP, and is nearly 20% thinner.

Applications

• Any Space Constrained System Requiring RS-232 Ports

- Battery Powered, and Portable Equipment

- Hand-Held Products (GPS Receivers, Bar Code

Scanners, etc.)

- PDAs and Palmtops, Data Cables

The ISL422XE features an automatic powerdown function

that powers down the on-chip power-supply and driver

circuits. This occurs when an attached peripheral device is

shut off or the RS-232 cable is removed, conserving system

power automatically without changes to the hardware or

operating system. It powers up again when a valid RS-232

voltage is applied to any receiver input.

- Cellular/Mobile Phones, Digital Cameras

Related Literature

• Technical Brief TB363 “Guidelines for Handling and

Processing Moisture Sensitive Surface Mount Devices

• ”Technical Brief TB379 “Thermal Characterization of

Packages for ICs”

Table 1 summarizes the features of the ISL422XE, while

Application Note AN9863 summarizes the features of each

device comprising the 3V RS-232 family.

• Technical Brief TB389 “PCB Land Pattern Design and

Surface Mount Guidelines for QFN Packages”

TABLE 1. SUMMARY OF FEATURES

PART

NUMBER

NO. OF NO.OF

QFN PKG.

AVAILABLE?

DATA RATE

(kBps)

Rx. ENABLE

FUNCTION?

MANUAL

POWERDOWN?

AUTOMATIC POWERDOWN

FUNCTION?

Tx.

Rx.

ISL4221E

ISL4223E

YES

250

YES

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

1-888-INTERSIL or 321-724-7143 | 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...13

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与ISL4221相关器件

型号	品牌	获取价格	描述	数据表
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 +
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

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