TRSF23243 3V 至 5.5V 双路 RS-232 端口

The TRSF23243 consists of two ports, each containing three line drivers and five line receivers, and a dual charge-pump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). This 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 two typical serial ports 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, this device includes an always-active noninverting output (ROUT2) per port, which allows applications using the ring indicator to transmit data while the device is powered down. The device operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew-rate.

Flexible control options for power management are available when either or both serial ports are 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 of its respective port are disabled. If FORCEOFF is set low, both drivers and receivers (except ROUT2) 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 RS-232 port is activated automatically when a valid signal is applied to any respective receiver input. The INV output is used to notify the user if an RS-232 signal is present at any receiver input. INV 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. INV is low (invalid data) if all receiver input voltages are between -0.3 V and 0.3 V for more than 30 µs.

TRSF23243
Data Rate(kbps) 250  
Drivers Per Package 6  
Receivers Per Package 10  
ESD HBM(kV) +/-15  
Supply Voltage(s)(V) 3.3 or 5.0  
ICC(Max)(mA) 2  
Operating Temperature Range(°C) 0 to 70  
Pin/Package 48SSOP, 48TSSOP  
Approx. Price (US$) 3.05 | 1ku  
Rating Catalog
TRSF23243 特性
TRSF23243 芯片订购指南
器件 状态 温度 价格 封装 | 引脚 封装数量 | 封装载体 丝印标记
TRSF23243CDB ACTIVE 0 to 70 1.10 | 1ku SSOP (DB) | 28 80 | TUBE  
TRSF23243CDBG4 ACTIVE -40 to 85 1.10 | 1ku SSOP (DB) | 28 80 | TUBE  
TRSF23243CDBR ACTIVE 0 to 70 0.90 | 1ku SSOP (DB) | 28 2000 | LARGE T&R  
TRSF23243CDBRG4 ACTIVE 0 to 70 0.90 | 1ku SSOP (DB) | 28 2000 | LARGE T&R  
TRSF23243 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
TRSF23243CDB Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM TRSF23243CDB TRSF23243CDB
TRSF23243CDBG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM TRSF23243CDBG4 TRSF23243CDBG4
TRSF23243CDBR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM TRSF23243CDBR TRSF23243CDBR
TRSF23243CDBRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM TRSF23243CDBRG4 TRSF23243CDBRG4
TRSF23243 应用技术支持与电子电路设计开发资源下载
  1. TRSF23243 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器RS-232 产品选型与价格 . xls
  3. Analog Signal Chain Guide (8.62 MB)
  4. Industrial Interface IC Solutions (101 KB)