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參數資料
| 型號： | ISL4238E |
| 廠商： | Intersil Corporation |
| 英文描述： | QFN Packaged, ±15kV ESD Protected, +2.7V to +5.5V, 10Nanoamp, 250kbps/1Mbps, RS-232 Transceivers with Enhanced Automatic Powerdown(QFN封裝, ±15kV ESD 防護, +2.7V至+5.5V, 10Nanoamp, 250kbps/1Mbps, 具有自動斷電功能的RS-232收發器) |
| 中文描述： | QFN封裝，具有± 15kV ESD保護，2.7V至5.5V，10Nanoamp，250kbps/1Mbps，RS - 232接口的增強型自動掉電封裝（QFN封裝，具有± 15kV ESD防護，收發器為2.7V至5.5V之間，10Nanoamp，250kbps/1Mbps，具有自動斷電功能的RS - 232接口收發器） |
| 文件頁數： | 1/17頁 |
| 文件大小： | 457K |
| 代理商： | ISL4238E |
1
FN8038.3
ISL4238E, ISL4244E, ISL4245E
QFN Packaged,
±
15kV ESD Protected,
+2.7V to +5.5V, 10Nanoamp, 250kbps/
1Mbps, RS-232 Transceivers with
Enhanced Automatic Powerdown
The Intersil ISL4238E/44E/45E devices are 2.7V to 5.5V
powered RS-232 transmitters/receivers which meet
ElA/TIA-232 and V.28/V.24 specifications, even at
V
CC
= 3.0V. Additionally, they provide
±
15kV ESD protection
(IEC6100-4-2 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 powerdown functions, reduce the standby supply
current to a
10nA
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 (ISL4238E/44E)/1Mbps (ISL4245E)
are guaranteed at worst case load conditions.
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 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.
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.
These devices feature an
enhanced automatic
powerdown
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
30sec. These devices power back up, automatically,
whenever they sense a transition on any transmitter or
receiver input.
Table 1 summarizes the features of the ISL4238E/4XE, while
Application Note AN9863 summarizes the features of each
device comprising the 3V RS-232 family.
Features
Parameters Fully Specified for 10% Tolerance Supplies
and Full Industrial Temp Range
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 (IEC6100)
DTE (ISL4244E/45E) and DCE (ISL4238E) Versions
Lowest Supply Current in Powerdown . . . . . . . . . . . .10nA
Active Feedback Resistors on T
X
and Logic Inputs
(ISL4238E)
Flow Through Pinouts
Manual and Enhanced Automatic Powerdown Features
Guaranteed Minimum Data Rate
250kbps (ISL4238E/44E) / 1Mbps (ISL4245E)
Latch-Up Free
On-Chip Charge Pumps Require Only Four External
0.1
μ
F Capacitors
Wide Power Supply Range. . . . . . . Single +2.7V to +5.5V
Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
RS-232 Compatible with V
CC
= 2.7V
Pb-free Available as an Option
Applications
Any Space Constrained System Requiring RS-232 Ports
- Battery Powered, Hand-Held, and Portable Equipment
- Laptop Computers, Notebooks
- 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”
Technical Brief TB379 “Thermal Characterization of
Packages for ICs”
Technical Brief TB389 “PCB Land Pattern Design and
Surface Mount Guidelines for QFN Packages”
Data Sheet
April 2004
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.
Copyright Intersil Americas Inc. 2004. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
相關PDF資料 |
PDF描述 |
|---|---|
| ISL4244E | QFN Packaged, ±15kV ESD Protected, +2.7V to +5.5V, 10Nanoamp, 250kbps/1Mbps, RS-232 Transceivers with Enhanced Automatic Powerdown(QFN封裝, ±15kV ESD 防護, +2.7V至+5.5V, 10Nanoamp, 250kbps/1Mbps, 具有自動斷電功能的RS-232收發器) |
| ISL4238EIRZ | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| ISL4238EIRZ-T | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| ISL4244EIR | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| ISL4244EIR-T | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ISL4238EIR | 功能描述:IC 5DRVR/3RCVR RS232 3V 32-QFN RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:25 系列:- 類型:收發器 驅動器/接收器數:2/2 規程:RS232 電源電壓:4.5 V ~ 5.5 V 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 供應商設備封裝:16-PDIP 包裝:管件 |
| ISL4238EIR-T | 功能描述:IC 5DRVR/3RCVR RS232 3V 32-QFN RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:25 系列:- 類型:收發器 驅動器/接收器數:2/2 規程:RS232 電源電壓:4.5 V ~ 5.5 V 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 供應商設備封裝:16-PDIP 包裝:管件 |
| ISL4238EIRZ | 功能描述:IC 5DRVR/3RCVR RS232 3V 32-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:發射器 驅動器/接收器數:4/0 規程:RS422，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC 包裝:帶卷 (TR) |
| ISL4238EIRZ-T | 功能描述:IC XMITTER/RCVR ESD RS232 32-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 類型:發射器 驅動器/接收器數:4/0 規程:RS422，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC 包裝:帶卷 (TR) |
| ISL4241E | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 10Nanoamp, 250kbps, RS-232 Transmitters/Receivers |
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