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ICL3227IA

更新时间： 2024-11-20 21:55:11
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英特矽尔 - INTERSIL 驱动器接口集成电路光电二极管
页数 文件大小 规格书
20页 518K
描述
1 Microamp, +3V to +5.5V, 1Mbps, RS-232 Transceivers with Enhanced Automatic Powerdown

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ICL3227IA 数据手册

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ICL3225, ICL3227, ICL3245  
®
Data Sheet  
June 2003  
FN4878.4  
1 Microamp, +3V to +5.5V, 1Mbps, RS-232  
Transceivers with Enhanced Automatic  
Powerdown  
Features  
• ±15kV ESD Protected (Human Body Model)  
• Manual and Enhanced Automatic Powerdown Features  
The Intersil ICL32XX devices are 3.0V to 5.5V powered  
RS-232 transmitters/receivers which meet ElA/TIA-232 and  
• Drop in Replacements for MAX3225, MAX3227,  
MAX3245  
V.28/V.24 specifications, even at V  
= 3.0V. Targeted  
CC  
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V  
• Latch-Up Free  
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 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 (ICL3245)  
• “Ready to Transmit” Indicator Output (ICL3225, ICL3227)  
• 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 ICL3245 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  
Applications  
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.  
• 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  
ICL32XX 3V family.  
- Cellular/Mobile Phones  
Related Literature  
• Technical Brief TB363 “Guidelines for Handling and  
Processing Moisture Sensitive Surface Mount Devices  
(SMDs)”  
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  
ICL3225  
ICL3227  
ICL3245  
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. 2003. All Rights Reserved  
1
All other trademarks mentioned are the property of their respective owners.  
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