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TRS3318IDB PDF预览

TRS3318IDB

更新时间： 2024-11-13 03:11:47
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
17页 342K
描述
2.5-V 460-kbps RS-232 TRANSCEIVER WITH 【15-kV ESD PROTECTION

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中文翻译

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TRS3318IDB 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：SSOP
包装说明：SSOP, SSOP20,.3针数：20
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.26
差分输出：NO驱动器位数：2
输入特性：SCHMITT TRIGGER接口集成电路类型：LINE TRANSCEIVER
接口标准：EIA-232JESD-30 代码：R-PDSO-G20
长度：7.2 mm功能数量：2
端子数量：20最高工作温度：85 °C
最低工作温度：-40 °C最小输出摆幅：7.4 V
最大输出低电流：0.0005 A封装主体材料：PLASTIC/EPOXY
封装代码：SSOP封装等效代码：SSOP20,.3
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：NOT SPECIFIED电源：2.25/3 V
认证状态：Not Qualified最大接收延迟：
接收器位数：2座面最大高度：2 mm
子类别：Line Driver or Receivers最大压摆率：2 mA
最大供电电压：3 V最小供电电压：2.25 V
标称供电电压：2.5 V表面贴装：YES
温度等级：INDUSTRIAL端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：5.3 mm
Base Number Matches：1

TRS3318IDB 数据手册

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TRS3318  
2.5-V 460-kbps RS-232 TRANSCEIVER  
WITH ±15-kV ESD PROTECTION  
www.ti.com  
SLLS820–AUGUST 2007  
1
FEATURES  
DB OR PW PACKAGE  
(TOP VIEW)  
•
ESD Protection for RS-232 I/O Pins  
–
–
–
±15 kV Human-Body Model (HBM)  
READY  
C1+  
1
2
3
4
5
6
7
8
9
10  
20 FORCEOFF  
±8 kV IEC 61000-4-2, Contact Discharge  
±8 kV IEC 61000-4-2, Air-Gap Discharge  
19  
18  
17  
16  
15  
14  
13  
12  
11  
VCC  
GND  
V+  
•
•
300-μA Operating Supply Current  
C1−  
C2+  
DOUT1  
RIN1  
1-μA Low-Power Standby (With Receivers  
Active) Mode  
C2−  
ROUT1  
FORCEON  
DIN1  
•
•
•
Designed to Transmit at a Data Rate of  
460 kbps  
V−  
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  
APPLICATIONS  
•
•
•
•
•
•
Battery-Powered Systems  
PDAs  
Cellular Phones  
Notebooks  
Hand-Held Equipment  
Pagers  
DESCRIPTION/ORDERING INFORMATION  
The TRS3318 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 ±8 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 TRS3318 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.  
Flexible control options for power management are featured when the serial port and driver inputs are inactive.  
The auto-powerdown plus feature functions when FORCEON is low and FORCEOFF is high. During this mode of  
operation, if the device does not sense valid signal transitions on all receiver and driver inputs for approximately  
30 s, the built-in charge pump and drivers are powered down, reducing the supply current to 1 μA. By  
disconnecting the serial port or placing the peripheral drivers off, auto-powerdown plus can be disabled when  
FORCEON and FORCEOFF are high. With auto-powerdown plus enabled, the device activates automatically  
when a valid signal is applied to any receiver or driver 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  
(typical number). INVALID is low (invalid data) if all receiver input voltage are between –0.3 V and 0.3 V for more  
than 30 μs (typical number).  
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 © 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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