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ICL3227EIA

更新时间： 2024-11-17 22:22:43
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19页 376K
描述
+-15kV ESD Protected, +3V to +5.5V, 1Microamp, 1Mbps, RS-232 Transceivers with Enhanced Automatic Powerdown

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ICL3227EIA 数据手册

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ICL3225E, ICL3227E, ICL3245E  
®
Data Sheet  
J une 2004  
FN4900.5  
±15kV ESD Protected, +3V to +5.5V,  
1Microamp, 1Mbps , RS-232 Trans ceivers  
with Enhanced Automatic Powerdown  
Features  
• Pb-Free Available as an Option (see Ordering Info)  
• ESD Protection for RS-232 I/O Pins to ±15kV (IEC61000)  
• Manual and Enhanced Automatic Powerdown Features  
The Intersil ICL32XXE devices are 3.0V to 5.5V powered  
RS-232 transmitters/receivers which meet ElA/TIA-232 and  
V.28/V.24 specifications, even at V  
= 3.0V. Additionally,  
• Drop in Replacements for MAX3225E, MAX3227E,  
MAX3245E  
CC  
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  
• RS-232 Compatible with V  
= 2.7V  
CC  
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V  
• Latch-Up Free  
consumption is critical. Efficient on-chip charge pumps,  
coupled with manual and enhanced automatic powerdown  
functions, reduce the standby supply current to a 1µA trickle.  
Small footprint packaging, and the use of small, low value  
capacitors ensure board space savings as well. Data rates  
greater than 1Mbps are guaranteed at worst case load  
conditions. This family is fully compatible with 3.3V only  
systems, mixed 3.3V and 5.0V systems, and 5.0V only  
systems.  
• On-Chip Voltage Converters Require Only Four External  
0.1µF Capacitors  
• Guaranteed Mouse Driveability (ICL3245E)  
• “Ready to Transmit” Indicator Output  
(ICL3225E/ICL3227E)  
• Receiver Hysteresis For Improved Noise Immunity  
• Guaranteed Minimum Data Rate . . . . . . . . . . . . . . 1Mbps  
• Low Skew at Transmitter/Receiver Input Trip Points. . . 10ns  
• Guaranteed Minimum Slew Rate . . . . . . . . . . . . . . 24V/µs  
• Wide Power Supply Range . . . . . . . Single +3V to +5.5V  
• Low Supply Current in Powerdown State. . . . . . . . . . .1µA  
The ICL3245E is a 3 driver, 5 receiver device that provides a  
complete serial port suitable for laptop or notebook  
computers. It also includes a noninverting always-active  
receiver for “wake-up” capability.  
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  
30s. These devices power back up, automatically, whenever  
they sense a transition on any transmitter or receiver input.  
Applications  
• Any System Requiring RS-232 Communication Ports  
- Battery Powered, Hand-Held, and Portable Equipment  
- Laptop Computers, Notebooks, Palmtops  
- Modems, Printers and Other Peripherals  
- Digital Cameras  
Table 1 summarizes the features of the device represented  
by this data sheet, while Application Note AN9863  
summarizes the features of each device comprising the  
ICL32XXE 3V family.  
- Cellular/Mobile Phones  
TABLE 1. SUMMARY OF FEATURES  
ENHANCED  
AUTOMATIC  
POWERDOWN  
FUNCTION?  
NO. OF  
MONITOR Rx.  
DATA  
RATE  
(kbps)  
MANUAL  
POWER-  
DOWN?  
PART  
NUMBER  
NO. OF NO.OF  
Rx. ENABLE  
FUNCTION?  
READY  
OUTPUT?  
Tx.  
Rx.  
(R  
)
OUTB  
ICL3225E  
ICL3227E  
ICL3245E  
2
2
0
1000  
1000  
1000  
No  
No  
No  
Yes  
Yes  
No  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
1
1
0
1
3
5
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. 2000, 2001, 2003, 2004. All Rights Reserved  
1
All other trademarks mentioned are the property of their respective owners.  
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ICL3227EIA 替代型号

型号 品牌 替代类型 描述 数据表
ICL3227EIAZA INTERSIL

类似代替

 【15kV ESD Protected, +3V to +5.5V, 1Microamp,
TRSF3221ECDB TI

功能相似

 暂无描述
MAX3227CDBR TI

功能相似

 3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVE

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