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MAX3223ECDWR PDF预览

MAX3223ECDWR

更新时间: 2024-11-24 02:58:07
品牌 Logo 应用领域
TAOS 驱动光电二极管接口集成电路驱动器
页数 文件大小 规格书
22页 646K
描述
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER WITH ±15-kV ESD PROTECTION

MAX3223ECDWR 数据手册

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MAX3223E  
www.ti.com.......................................................................................................................................... SLLS707A JANUARY 2006REVISED SEPTEMBER 2009  
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER  
WITH ±15-kV ESD PROTECTION  
Check for Samples: MAX3223E  
1
FEATURES  
DB, DW, OR PW PACKAGE  
ESD Protection for RS-232 Bus Pins  
(TOP VIEW)  
±15-kV Human-Body Model (HBM)  
EN  
C1+  
1
20 FORCEOFF  
±8-kV IEC61000-4-2, Contact Discharge  
±15-kV IEC61000-4-2, Air-Gap Discharge  
2
19  
18  
17  
16  
15  
14  
13  
12  
11  
V
CC  
3
V+  
GND  
Meets or Exceeds the Requirements of  
TIA/EIA-232-F and ITU v.28 Standards  
4
C1−  
DOUT1  
RIN1  
5
C2+  
Operates With 3-V to 5.5-V VCC Supply  
Operates up to 500 kbit/s  
6
C2−  
ROUT1  
FORCEON  
DIN1  
7
V−  
8
DOUT2  
RIN2  
ROUT2  
Two Drivers and Two Receivers  
Low Standby Current . . . 1 μA Typ  
External Capacitors . . . 4 × 0.1 μF  
Accepts 5-V Logic Input With 3.3-V Supply  
9
DIN2  
10  
INVALID  
Alternative High-Speed Pin-Compatible Device  
(1 Mbit/s) for SNx5C3223E  
APPLICATIONS  
Battery-Powered Systems  
PDAs  
Notebooks  
Laptops  
Palmtop PCs  
Hand-Held Equipment  
DESCRIPTION/ORDERING INFORMATION  
The MAX3223E consists of two line drivers, two line receivers, 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. The device operates at typical data signaling rates up to 500 kbit/s and a maximum of 30-V/μs  
driver output slew rate.  
Flexible control options for power management are available when the serial port is inactive. The  
auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of  
operation, if the device does not sense a valid RS-232 signal, the driver outputs are disabled. If FORCEOFF is  
set low and EN is high, both drivers and receivers are shut off, and the supply current is reduced to 1 mA.  
Disconnecting the serial port or turning off the peripheral drivers causes auto-powerdown to occur.  
Auto-powerdown can be disabled when FORCEON and FORCEOFF are high. With auto-powerdown enabled,  
the device is activated automatically when a valid signal is applied to any receiver input. The INVALID output is  
used to notify the user if an RS-232 signal is present at any receiver input. INVALID is high (valid data) if any  
receiver input voltage is greater than 2.7 V or less than –2.7 V, or has been between –0.3 V and 0.3 V for less  
than 30 μs. INVALID is low (invalid data) if the receiver input voltage is between –0.3 V and 0.3 V for more than  
30 μs. Refer to Figure 4 for receiver input levels.  
1
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.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2006–2009, 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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