特長
- IEC61000 ESD protection (RS-485 inputs): ±16.5kV
- Class 3 ESD on all other pins: >8kV HBM
- Wide supply range: 3.0V to 5.5V
- Wide common-mode range: -7V to +12V
- Low part-to-part propagation delay tolerance: 8ns (maximum)
- Specified for +125°C operation
- Fail-safe open Rx inputs
- 1/4 unit load allows 128 devices on the bus
- Available in industry standard pinout
- High data rate of up to 80Mbps
- Low shutdown supply current: 15µA
- Tri-statable Rx outputs
- 5V tolerant logic inputs when VCC = 3.3V
- RoHS Compliant
説明
The RAA7884QR is a ±16.5kV IEC61000-4-2 ESD protected, 3.0V to 5.5V powered, quad receiver designed for balanced communication using the RS-485 and RS-422 standards. With low input currents (±200µA), the receiver presents a 1/4 unit load to the RS-485 bus and allows up to 128 receivers on the bus.
The RAA7884QR is a high data rate receiver that operates at data rates up to 80Mbps. With an 8ns maximum propagation delay skew (tolerance), it ensures excellent part-to-part matching. The receiver outputs are tri-statable and include a hot plug feature to keep them disabled during power-up and power-down.
パラメータ
| 属性 | 値 |
|---|---|
| Transmitters (#) | 0 |
| Receivers (#) | 4 |
| Devices Allowed on Bus | 128 |
| Half/Full Duplex | N/A |
| Supply Voltage Vcc Range | 3.0 to 5.5 |
| High ESD Protection | Yes-IEC61000-4-2 |
| Hot Plug | Yes |
| Data Rate (Mbps) | 80 |
| Slew Rate Limited | No |
| Tx/Rx Enable | Yes - Group Enables |
| IS Enabled/Disabled | 15000 µA |
| SHDN ICC | 15 µA |
| VL Pin | No |
| Advanced Features | High Speed |
パッケージオプション
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| SOICN | 9.9 x 3.9 x 0.00 | 16 | 1.3 |
アプリケーション
- Telecom equipment
- Motor controllers/encoders
- Programmable logic controllers
- Industrial/process control networks