TRS3221 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 TRS3221 consists of one line driver, one line receiver, 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. These devices operate 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 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 on the receiver input, the driver output is disabled. If FORCEOFF is set low and EN is high, both the driver and receiver 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. With auto-powerdown enabled, the device is activated automatically when a valid signal is applied to the receiver input. The INVALID output notifies the user if an RS-232 signal is present at the receiver input. INVALID is high (valid data) if the 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 the receiver input voltage is between -0.3 V and 0.3 V for more than 30 µ
|
TRS3221 |
| Data Rate(kbps) |
250 |
| Drivers Per Package |
1 |
| Receivers Per Package |
1 |
| ESD HBM(kV) |
+/-15 |
| Supply Voltage(s)(V) |
3.3 or 5.0 |
| ICC(Max)(mA) |
1 |
| Operating Temperature Range(°C) |
-40 to 85,0 to 70 |
| Pin/Package |
16SSOP, 16TSSOP |
| Approx. Price (US$) |
0.90 | 1ku |
| Rating |
Catalog |
| Footprint |
MAX3221 |
TRS3221 特性
- RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human-Body Model (HBM)
- Meets or Exceeds the Requirements ofTIA/EIA-232-F and ITU v.28 Standards
- Operates With 3-V to 5.5-V VCC Supply
- Operates Up To 250 kbit/s
- One Driver and One Receiver
- Low Standby Current . . . 1 µA Typical
- External Capacitors . . . 4 × 0.1 µF
- Accepts 5-V Logic Input With 3.3-V Supply
- Alternative High-Speed Pin-Compatible Device (1 Mbit/s)
- Auto-Powerdown Feature Automatically Disables Drivers for Power Savings
- APPLICATIONS
- Battery-Powered, Hand-Held, and Portable Equipment
- PDAs and Palmtop PCs
- Notebooks, Subnotebooks, and Laptops
- Digital Cameras
- Mobile Phones and Wireless Devices
TRS3221 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 |
| TRS3221CDB |
ACTIVE |
0 to 70 |
1.10 | 1ku |
SSOP (DB) | 16 |
80 | TUBE |
|
| TRS3221CDBG4 |
ACTIVE |
-40 to 85 |
1.10 | 1ku |
SSOP (DB) | 16 |
80 | TUBE |
|
| TRS3221CDBR |
ACTIVE |
0 to 70 |
0.90 | 1ku |
SSOP (DB) | 16 |
2000 | LARGE T&R |
|
| TRS3221CDBRG4 |
ACTIVE |
0 to 70 |
0.90 | 1ku |
SSOP (DB) | 16 |
2000 | LARGE T&R |
|
TRS3221 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 |
| TRS3221CDB |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TRS3221CDB |
TRS3221CDB |
| TRS3221CDBG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TRS3221CDBG4 |
TRS3221CDBG4 |
| TRS3221CDBR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TRS3221CDBR |
TRS3221CDBR |
| TRS3221CDBRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TRS3221CDBRG4 |
TRS3221CDBRG4 |
TRS3221 应用技术支持与电子电路设计开发资源下载
- h 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)
