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ISL4223EIR-T Datasheet

  • ISL4223EIR-T

  • QFN Packaged, +/-15kV ESD Protected, +2.7V to +5.5V, 150Nano...

  • 391.05KB

  • 13頁

  • INTERSIL   INTERSIL

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廬
ISL4221E, ISL4223E
Data Sheet
August 2004
FN6045.1
QFN Packaged, +/-15kV ESD Protected,
+2.7V to +5.5V, 150Nanoamp, 250kBps,
RS-232 Transmitters/Receivers
The Intersil ISL422XE 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
鹵
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.
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鈥檚 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.
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.
Table 1 summarizes the features of the ISL422XE, while
Application Note AN9863 summarizes the features of each
device comprising the 3V RS-232 family.
Features
鈥?Available in Near Chip Scale QFN (5mmx5mm) Package
which is 40% Smaller than a 20 Lead TSSOP
鈥?ESD Protection for RS-232 I/O Pins to
鹵
15kV (IEC61000)
鈥?Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
鈥?RS-232 Compatible with V
CC
= 2.7V
鈥?On-Chip Voltage Converters Require Only Four External
0.1碌F Capacitors
鈥?Manual and Automatic Powerdown Features
鈥?Receiver Hysteresis For Improved Noise Immunity
鈥?Guaranteed Minimum Data Rate . . . . . . . . . . . . 250kBps
鈥?Wide Power Supply Range. . . . . . . Single +2.7V to +5.5V
鈥?Low Supply Current in Powerdown State . . . . . . . . .150nA
鈥?Pb-free Available as an Option
Applications
鈥?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
- Cellular/Mobile Phones, Digital Cameras
Related Literature
鈥?Technical Brief TB363 鈥淕uidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
鈥?鈥漈echnical Brief TB379 鈥淭hermal Characterization of
Packages for ICs鈥?/div>
鈥?Technical Brief TB389 鈥淧CB Land Pattern Design and
Surface Mount Guidelines for QFN Packages鈥?/div>
TABLE 1. SUMMARY OF FEATURES
PART
NUMBER
ISL4221E
ISL4223E
NO. OF NO. OF
Tx.
Rx.
1
2
1
2
QFN PKG.
AVAILABLE?
YES
YES
DATA RATE
(kBps)
250
250
Rx. ENABLE
FUNCTION?
YES
YES
MANUAL
POWERDOWN?
YES
YES
AUTOMATIC POWERDOWN
FUNCTION?
YES
YES
1
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 漏 Intersil Americas Inc. 2004. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

ISL4223EIR-T 產(chǎn)品屬性

  • 6,000

  • 集成電路 (IC)

  • 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器

  • -

  • 收發(fā)器

  • 2/2

  • RS232

  • 2.7 V ~ 5.5 V

  • 表面貼裝

  • 20-VQFN 裸露焊盤

  • 20-QFN 裸露焊盤（5x5）

  • 帶卷 (TR)

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