TRSF3238E 具有 +/-15kV ESD (HBM) 保护的 3V 至 5.5V 多通道 RS-232 线路驱动器/接收器
The TRSF3238E consists of two line drivers, two 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. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. The TRSF3238E operates at typical data signaling rates up to 1000 kbit/s.
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 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 device is automatically activated 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 us. INVALID is low (invalid data) if the receiver input voltage is between -0.3 V and 0.3 V for more than 30 u
|
TRSF3238E |
| Data Rate(kbps) |
1000 |
| Drivers Per Package |
5 |
| Receivers Per Package |
3 |
| ESD HBM(kV) |
+/-15 |
| Supply Voltage(s)(V) |
3.3 or 5.0 |
| ICC(Max)(mA) |
2 |
| Operating Temperature Range(°C) |
-40 to 85,0 to 70 |
| Pin/Package |
28SOIC, 28SSOP |
| Approx. Price (US$) |
1.45 | 1ku |
| Rating |
Catalog |
| Footprint |
MAX3238 |
TRSF3238E 特性
- 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
- Operates up to 1000 kbit/s
- Five Drivers and Three Receivers
- Auto-Powerdown Plus Feature Enables Flexible Power-Down Mode
- Low Standby Current . . . 1 uA Typical
- External Capacitors . . . 4 × 0.1 uF
- Accept 5-V Logic Input With 3.3-V Supply
- Always-Active Noninverting Receiver Output (ROUT1B)
- ESD Protection for RS-232 Interface Pins
- ±15-kV Human-Body Model (HBM)
- ±8-kV IEC61000-4-2, Contact Discharge
- ±15-kV IEC61000-4-2, Air-Gap Discharge
- APPLICATIONS
- Battery-Powered Systems
- PDAs
- Notebooks
- Subnotebooks
- Laptops
TRSF3238E 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 |
| TRSF3238ECDB |
ACTIVE |
0 to 70 |
1.10 | 1ku |
SSOP (DB) | 28 |
80 | TUBE |
|
| TRSF3238ECDBG4 |
ACTIVE |
-40 to 85 |
1.10 | 1ku |
SSOP (DB) | 28 |
80 | TUBE |
|
| TRSF3238ECDBR |
ACTIVE |
0 to 70 |
0.90 | 1ku |
SSOP (DB) | 28 |
2000 | LARGE T&R |
|
| TRSF3238ECDBRG4 |
ACTIVE |
0 to 70 |
0.90 | 1ku |
SSOP (DB) | 28 |
2000 | LARGE T&R |
|
TRSF3238E 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 |
| TRSF3238ECDB |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TRSF3238ECDB |
TRSF3238ECDB |
| TRSF3238ECDBG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TRSF3238ECDBG4 |
TRSF3238ECDBG4 |
| TRSF3238ECDBR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TRSF3238ECDBR |
TRSF3238ECDBR |
| TRSF3238ECDBRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TRSF3238ECDBRG4 |
TRSF3238ECDBRG4 |
TRSF3238E 应用技术支持与电子电路设计开发资源下载
- TRSF3238E 数据资料 dataSheet 下载.PDF
- TI 德州仪器RS-232 产品选型与价格 . xls
- Analog Signal Chain Guide (8.62 MB)
- Industrial Interface IC Solutions (101 KB)