Datasheet > ISL4245E

ISL4245E

更新时间： 2024-11-05 14:57:23

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
17页	774K
描述
QFN Packaged, ±15kV ESD Protected, +2.7V to +5.5V, 10nA, 250kbps/1Mbps, RS-232 Transceivers with Enhanced Automatic Powerdown

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ISL4245E 数据手册

DATASHEET

ISL4238E, ISL4244E, ISL4245E

QFN Packaged, ±15kV ESD Protected, +2.7V to +5.5V, 10Nanoamp, 250kbps/

1Mbps, RS-232 Transceivers with Enhanced Automatic Power-down

FN8038

Rev 5.00

May 13, 2010

The Intersil ISL4238E, ISL4244E and ISL4245E devices are

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

Features

• Parameters Fully Specified for 10% Tolerance Supplies

and Full Industrial Temp Range

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

= 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 notebook

and laptop computers where the low operational, and even

lower standby power consumption is critical. Efficient on-chip

charge pumps, coupled with manual and enhanced

automatic power-down functions, reduce the standby supply

current to a 10nA trickle. Tiny 5mmx5mm 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 (ISL4238E/ISL4244E)/1Mbps (ISL4245E) are

guaranteed at worst case load conditions.

• Available in Small QFN (5mm x 5mm) Package which is

60% Smaller than a 28 Lead TSSOP

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

• DTE (ISL4244E/45E) and DCE (ISL4238E) Versions

• Lowest Supply Current in Power-down . . . . . . . . . . .10nA

• Active Feedback Resistors on T and Logic Inputs

(ISL4238E)

• Flow Through Pinouts

• Manual and Enhanced Automatic Power-down Features

• Guaranteed Minimum Data Rate

The ISL424xE are 3 driver, 5 receiver (DTE) devices that,

coupled with the QFN package, provide the industry’s

smallest, lowest power complete serial port suitable for

PDAs, and laptop or notebook computers. The 32 Ld 5x5

QFN requires 60% less board area than a 28 lead TSSOP,

and is nearly 20% thinner. The devices also include a

noninverting always-active receiver for “wake-up” capability.

250kbps (ISL4238E/ISL4244E) / 1Mbps (ISL4245E)

• Latch-Up Free

• On-Chip Charge Pumps Require Only Four External

0.1µF Capacitors

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

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

The ISL4238E is a 5 driver, 3 receiver device optimized for

DCE applications with full hardware handshaking. It also

includes a noninverting always-active receiver for RING

INDICATOR monitoring. Transmitter and logic inputs include

active feedback resistors that retain the input state once

driven to a valid logic level.

• RS-232 Compatible with V

= 2.7V

• Pb-Free Available (RoHS Compliant)

Applications

• Any Space Constrained System Requiring RS-232 Ports

- Battery Powered, Hand-Held, and Portable Equipment

- Laptop Computers, Notebooks

These devices feature an enhanced automatic power-down

function which powers down the on-chip power-supply and

driver circuits. This occurs when all receiver and transmitter

inputs detect no signal transitions for a period of 30s. These

devices power back-up, automatically, whenever they sense

a transition on any transmitter or receiver input.

- PDAs and Palmtops, Data Cables

- Cellular/Mobile Phones, Digital Cameras, GPS

Receivers

Related Literature

• Technical Brief TB363 “Guidelines for Handling and

Processing Moisture Sensitive Surface Mount Devices”

Table 1 summarizes the features of the ISL4238E,

ISL4244E, ISL4245, while Application Note AN9863

summarizes the features of each device comprising the 3V

RS-232 family.

• Technical Brief TB379 “Thermal Characterization of

Packages for ICs”

• Technical Brief TB389 “PCB Land Pattern Design and

Surface Mount Guidelines for QFN Packages”

FN8038 Rev 5.00

May 13, 2010

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与ISL4245E相关器件

型号	品牌	获取价格	描述	数据表
ISL4245EIR	INTERSIL	获取价格	QFN Packaged, 【15kV ESD Protected, +2.7V to +
ISL4245EIR-T	INTERSIL	获取价格	QFN Packaged, 【15kV ESD Protected, +2.7V to +
ISL4245EIRZ	INTERSIL	获取价格	QFN Packaged, 【15kV ESD Protected, +2.7V to +
ISL4245EIRZ-T	INTERSIL	获取价格	QFN Packaged, 【15kV ESD Protected, +2.7V to +
ISL4260E	INTERSIL	获取价格	QFN Packaged, 【15kV ESD Protected, +3V to +5.
ISL4260E	RENESAS	获取价格	QFN Packaged, ±15kV ESD Protected, +3V to +5.
ISL4260EIR	INTERSIL	获取价格	QFN Packaged, 【15kV ESD Protected, +3V to +5.
ISL4260EIR-T	INTERSIL	获取价格	QFN Packaged, 【15kV ESD Protected, +3V to +5.
ISL4260EIRZ	RENESAS	获取价格	QFN, ±15kV ESD Protected, +3V to +5.5V, 150nA
ISL4260EIRZ	ROCHESTER	获取价格	DUAL LINE TRANSCEIVER, PQCC32, 5 X 5 MM, LEAD FREE, PLASTIC, MO-220VHHD2, QFN-32

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