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TRS3318EIPWG4

更新时间： 2024-11-13 03:58:31
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德州仪器 - TI /
页数 文件大小 规格书
19页 314K
描述
2.5-V 460-kbps RS-232 TRANSCEIVER WITH 【15-kV ESD PROTECTION

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TRS3318EIPWG4 数据手册

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TRS3318E  
2.5-V 460-kbps RS-232 TRANSCEIVER  
WITH ±15-kV ESD PROTECTION  
www.ti.com  
SLLS805–APRIL 2007  
FEATURES  
DB OR PW PACKAGE  
(TOP VIEW)  
•
ESD Protection for RS-232 I/O Pins  
–
–
–
±15 kV (Human-Body Model)  
READY  
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
GND  
CC  
V+  
•
•
300-µA Operating Supply Current  
C1−  
C2+  
DOUT1  
RIN1  
1-µA Low-Power Standby Mode (With  
Receivers Active)  
C2−  
ROUT1  
FORCEON  
DIN1  
V−  
•
•
•
•
Designed to Transmit at a Data Rate of  
460 kbps  
DOUT2  
RIN2  
ROUT2  
DIN2  
INVALID  
Auto-Powerdown Plus Option Features  
Flexible Power-Saving Mode  
Operates From a Single 2.25-V to 3-V VCC  
Supply  
Designed to be Interchangeable With Industry  
Standard '3318 Devices  
APPLICATIONS  
•
•
•
•
•
•
Battery-Powered Systems  
PDAs  
Cellular Phones  
Notebooks  
Hand-Held Equipment  
Pagers  
DESCRIPTION/ORDERING INFORMATION  
The TRS3318E is  
a dual-driver, dual-receiver, RS-232-compatible transceiver. The device features  
auto-powerdown plus and enhanced electrostatic discharge (ESD) protection integrated into the chip. Driver  
output and receiver input are protected to ±15 kV using the IEC 61000-4-2 Air-Gap Discharge method, ±8 kV  
using the IEC 61000-4-2 Contact Discharge method, and ±15 kV using the Human-Body Model (HBM).  
The device operates at a data rate of 460 kbps. The transceiver has a proprietary low-dropout driver output  
stage, enabling RS-232-compatible operation from a 2.25-V to 3-V supply with a dual charge pump. The charge  
pump requires only four 0.1-µF capacitors and features a logic-level output (READY) that asserts when the  
charge pump is regulating and the device is ready to begin transmitting.  
The TRS3318E achieves a 1-µA supply current using the auto-powerdown feature. This device automatically  
enters a low-power power-down mode when the RS-232 cable is disconnected or the drivers of the connected  
peripherals are inactive for more than 30 s. The device turns on again when it senses a valid transition at any  
driver or receiver input. Auto-powerdown saves power without changes to the existing BIOS or operating  
system.  
This device is available in two space-saving packages: 20-pin SSOP and 20-pin TSSOP.  
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 © 2007, 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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