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MAX3227IDBE4

更新时间： 2024-11-26 03:08:59
品牌 Logo 应用领域
德州仪器 - TI 驱动器
页数 文件大小 规格书
13页 165K
描述
3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER WITH 【15-kV ESD PROTECTION

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MAX3227IDBE4 数据手册

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MAX3227  
3-V TO 5.5-V SINGLE-CHANNEL RS-232 LINE DRIVER/RECEIVER  
WITH ±15-kV ESD PROTECTION  
www.ti.com  
SLLS673A–AUGUST 2005–REVISED FEBRUARY 2006  
FEATURES  
APPLICATIONS  
•
Battery-Powered, Hand-Held, and Portable  
Equipment  
•
Meets or Exceeds the Requirements of  
TIA/EIA-232-F and ITU v.28 Standards  
•
•
•
•
PDAs and Palmtop PCs  
Notebooks, Sub-Notebooks, and Laptops  
Digital Cameras  
•
•
•
•
•
•
Operates With 3-V to 5.5-V VCC Supply  
Operates at Least 1 Mbit/s  
Low Standby Current . . . 1 µA Typ  
External Capacitors . . . 4 × 0.1 µF  
Accepts 5-V Logic Input With 3.3-V Supply  
Mobile Phones and Wireless Devices  
DB PACKAGE  
(TOP VIEW)  
Designed to Be Interchangeable With Maxim™  
MAX3227  
READY  
C1+  
V+  
FORCEOFF  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
•
•
Latch-Up Performance Exceeds 100 mA Per  
JESD 78, Class II  
V
CC  
GND  
ESD Protection for RS-232 I/O Pins  
– ±15 kV – Human-Body Model  
C1−  
C2+  
C2−  
V−  
DOUT  
FORCEON  
DIN  
– ±8 kV – IEC61000-4-2, Contact Discharge  
– ±8 kV – IEC61000-4-2, Air-Gap Discharge  
INVALID  
ROUT  
RIN  
•
•
Auto-Powerdown Plus Feature Automatically  
Disables Drivers for Power Savings  
Packaged in Plastic Shrink Small-Outline  
Package  
DESCRIPTION/ORDERING INFORMATION  
The MAX3227 consists of one line driver, one line receiver, and a dual charge-pump circuit with ±15-kV ESD  
protection pin to pin (serial-port connection pins, including GND). The device meets the requirements of  
TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the  
serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to  
5.5-V supply. This device operates at data-signaling rates of 1 Mbit/s in normal operating mode and a maximum  
of 30-V/µs driver output slew rate. This device also features a logic-level output (READY) that asserts when the  
charge pump is regulating and the device is ready to begin transmitting.  
The MAX3227 achieves a 1-µA supply current using the auto-powerdown plus feature. This device automatically  
enters a low-power powerdown mode when the RS-232 cable is disconnected or the drivers of the connected  
peripherals are inactive for more than 30 s. They turn on again when they sense a valid transition at any driver or  
receiver input. Auto-powerdown saves power without changes to the existing BIOS or operating system.  
The MAX3227C is characterized for operation from 0°C to 70°C. The MAX3227I is characterized for operation  
from –40°C to 85°C.  
AVAILABLE OPTIONS  
PACKAGED DEVICE  
TA  
SHRINK SMALL OUTLINE  
(DB)(1)  
0°C to 70°C  
MAX3227CDB  
MAX3227IDB  
–40°C to 85°C  
(1) The DB package is available taped and reeled. Add the suffix R to  
device type (e.g., MAX3227CDBR).  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2005–2006, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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