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TRS3243IDWRG4 PDF预览

TRS3243IDWRG4

更新时间： 2024-11-13 12:16:19
品牌 Logo 应用领域
德州仪器 - TI 驱动器
页数 文件大小 规格书
19页 583K
描述
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER WITH ±15-kV ESD (HBM) PROTECTION

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TRS3243IDWRG4 数据手册

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TRS3243  
3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER  
WITH ±15-kV ESD (HBM) PROTECTION  
www.ti.com  
SLLS806–JUNE 2007  
FEATURES  
APPLICATIONS  
•
•
•
•
•
•
•
•
Battery-Powered  
Systems  
PDAs  
Notebooks  
Laptops  
Palmtop  
PCs  
Hand-Held Equipment  
•
•
•
Single-Chip and Single-Supply Interface  
for IBM™ PC/AT™ Serial Port  
RS-232 Bus-Pin ESD Protection Exceeds  
±15 kV Using Human-Body Model (HBM)  
Meets or Exceeds the Requirements of  
TIA/EIA-232-F and ITU v.28 Standards  
•
•
•
•
•
•
Operates With 3-V to 5.5-V VCC Supply  
Three Drivers and Five Receivers  
Low Standby Current . . . 1 mA Typical  
External Capacitors . . . 4 × 0.1 mF  
Accepts 5-V Logic Input With 3.3-V Supply  
DB, DW, OR PW PACKAGE  
(TOP VIEW)  
C2+  
C2−  
V−  
1
28 C1+  
Always-Active Noninverting Receiver  
Output (ROUT2B)  
2
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
V+  
3
V
CC  
•
Operating Speed  
4
RIN1  
RIN2  
RIN3  
RIN4  
RIN5  
DOUT1  
DOUT2  
DOUT3  
DIN3  
DIN2  
DIN1  
GND  
C1−  
–
–
TRS3243C, TRS3243I . . . 250 Kbit/s  
5
TRS3243FC, TRS3243FI . . . 1000 Kbit/s  
6
FORCEON  
FORCEOFF  
INVALID  
ROUT2B  
ROUT1  
ROUT2  
ROUT3  
ROUT4  
ROUT5  
7
•
Operating Temperature  
8
–
–
TRS3243C, TRS3243FC . . . 0°C to 70°C  
TRS3243I, TRS3243FI . . . –40°C to 85°C  
9
10  
11  
12  
13  
14  
•
•
Serial-Mouse Driveability  
Auto-Powerdown Feature to Disable Driver  
Outputs When No Valid RS-232 Signal Is  
Sensed  
DESCRIPTION/ORDERING INFORMATION  
The TRS3243 consists of three line drivers, five line receivers, and a dual charge-pump circuit with ±15-kV ESD  
(HBM) 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. This combination of drivers and receivers matches that needed for the typical serial port  
used in an IBM PC/AT or compatible. The charge pump and four small external capacitors allow operation from  
a single 3-V to 5.5-V supply. In addition, the device includes an always-active noninverting output (ROUT2B),  
which allows applications using the ring indicator to transmit data while the device is powered down.  
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, both drivers and receivers (except ROUT2B) are shut off, and the supply current is reduced to 1 μA.  
Disconnecting the serial port or turning off the peripheral drivers causes the auto-powerdown condition to occur.  
Auto-powerdown can be disabled when FORCEON and FORCEOFF are high and should be done when driving  
a serial mouse. 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 all receiver input  
voltages are between –0.3 V and 0.3 V for more than 30 μs. Refer to Figure 5 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.  
IBM, PC/AT are trademarks of IBM.  
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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TRS3243IDWRG4 替代型号

型号 品牌 替代类型 描述 数据表
TRS3243IPWR TI

完全替代

 3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/
TRS3243IPW TI

完全替代

 3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/
TRS3243CPW TI

完全替代

 3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/

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