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SN65C3223E_07

更新时间： 2024-11-18 04:51:19
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德州仪器 - TI 驱动器接收机
页数 文件大小 规格书
20页 303K
描述
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVERS/RECEIVERS WITH 【15-kV ESD PROTECTION

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SN65C3223E_07 数据手册

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SN65C3223E, SN75C3223E  
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVERS/RECEIVERS  
WITH ±15-kV ESD PROTECTION  
www.ti.com  
SLLS727A–MAY 2006–REVISED JULY 2006  
FEATURES  
DB, DW, OR PW PACKAGE  
•
ESD Protection for RS-232 Bus Pins  
(TOP VIEW)  
– ±15-kV Human-Body Model (HBM)  
EN  
C1+  
1
2
3
4
5
6
7
8
9
10  
20 FORCEOFF  
– ±8-kV IEC 61000-4-2, Contact Discharge  
– ±15-kV IEC 61000-4-2, Air-Gap Discharge  
19  
18  
17  
16  
15  
14  
13  
12  
11  
V
CC  
V+  
C1−  
C2+  
C2−  
GND  
DOUT1  
RIN1  
ROUT1  
FORCEON  
DIN1  
•
Meet or Exceed the Requirements of  
TIA/EIA-232-F and ITU v.28 Standards  
•
•
•
•
•
•
Operate With 3-V to 5.5-V VCC Supply  
Operate up to 1000 kbit/s  
V−  
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  
DIN2  
INVALID  
RHL PACKAGE  
(TOP VIEW)  
APPLICATIONS  
•
•
•
•
•
•
Battery-Powered Systems  
PDAs  
Notebooks  
Laptops  
Palmtop PCs  
Hand-Held Equipment  
1
24  
C1+  
NC  
V+  
C1–  
C2+  
V
CC  
2
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
NC  
3
4
GND  
DOUT1  
RIN1  
ROUT1  
FORCEON  
DIN1  
DESCRIPTION/ORDERING  
INFORMATION  
5
6
The SN65C3223E and SN75C3223E consist of two  
line drivers, two line receivers, and  
7
C2–  
V–  
a
dual  
8
charge-pump circuit with ±15-kV ESD protection pin  
to pin (serial-port connection pins, including GND).  
These devices meet the requirements of  
TIA/EIA-232-F and provide 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 devices operate at  
typical data signaling rates up to 1000 kbit/s.  
9
DOUT2  
NC  
RIN2  
10  
11  
NC  
DIN2  
12  
13  
NC − No internal connection  
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 devices do 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 devices are 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.  
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, 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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