MAX3222是TI公司的一款无产品,MAX3222是3V 至 5.5V 多通道 RS-232 线路驱动器/接收器,本页介绍了MAX3222的产品说明、应用、特性等,并给出了与MAX3222相关的TI元器件型号供参考。
MAX3222 - 3V 至 5.5V 多通道 RS-232 线路驱动器/接收器 - 无 - RS-232收发器 - TI公司(Texas Instruments,德州仪器)
The MAX3222 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 data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew rate.
The MAX3222 can be placed in the power-down mode by setting PWRDOWN\ low, which draws only 1 µA from the power supply. When the device is powered down, the receivers remain active while the drivers are placed in the high-impedance state. Also, during power down, the onboard charge pump is disabled; V+ is lowered to VCC, and V is raised toward GND. Receiver outputs also can be placed in the high-impedance state by setting EN\ high.
- 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 250 kbit/s
- Two Drivers and Two Receivers
- 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)
- SNx5C3222
- Applications
- Battery-Powered Systems, PDAs, Notebooks, Laptops, Palmtop PCs, and Hand-Held Equipment