TRS3227 具有 +/-15-kV IEC ESD 保护的 3V 至 5.5V 单通道 RS-232 线路驱动器/接收器
The TRS3227 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). 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. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. The device operates at typical data signaling rates up to 500 kbit/s and a maximum of 30-V/us driver output slew rate.
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 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 us. INVALID is low (invalid data) if the receiver input voltage is between -0.3 V and 0.3 V for more than 30 us. Refer to Figure 4 for receiver input levels
|
TRS3227 |
| Data Rate(kbps) |
1000 |
| Drivers Per Package |
1 |
| Receivers Per Package |
1 |
| 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 |
16SSOP |
| Approx. Price (US$) |
1.40 | 1ku |
| Rating |
Catalog |
| Footprint |
MAX3227 |
TRS3227 特性
- 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 at Least 1 Mbit/s
- Low Standby Current . . . 1 uA Typ
- External Capacitors . . . 4 × 0.1 uF
- Accepts 5-V Logic Input With 3.3-V Supply
- Designed to Be Interchangeable With industry Standard '3227 Devices
- Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
- ESD Protection for RS-232 I/O Pins
- ±15 kV - Human-Body Model
- ±8 kV - IEC61000-4-2, Contact Discharge
- ±8 kV - IEC61000-4-2, Air-Gap Discharge
- Auto-Powerdown Plus Feature Automatically Disables Drivers for Power Savings
- Packaged in Plastic Shrink Small-Outline Package
- APPLICATIONS
- Battery-Powered, Hand-Held, and Portable Equipment
- PDAs and Palmtop PCs
- Notebooks, Sub-Notebooks, and Laptops
- Digital Cameras
- Mobile Phones and Wireless Devices
TRS3227 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 |
| TRS3227CDBR |
ACTIVE |
0 to 70 |
1.00 | 1ku |
SSOP (DB) | 16 |
2000 | LARGE T&R |
|
| TRS3227CDBRG4 |
ACTIVE |
0 to 70 |
1.00 | 1ku |
SSOP (DB) | 16 |
2000 | LARGE T&R |
|
TRS3227 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 |
| TRS3227CDBR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TRS3227CDBR |
TRS3227CDBR |
| TRS3227CDBRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TRS3227CDBRG4 |
TRS3227CDBRG4 |
TRS3227 应用技术支持与电子电路设计开发资源下载
- TRS3227 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)