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SN75C3223 - 产品图解：
SN75C3223-3V 至 5V 多通道 RS-232 兼容线路驱动器/接收器
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TI产品 - SN75C3223介绍

SN75C3223 - 3V 至 5V 多通道 RS-232 兼容线路驱动器/接收器

SN75C3223是TI德州仪器公司的一款无产品，SN75C3223是3V 至 5V 多通道 RS-232 兼容线路驱动器/接收器，本站介绍了SN75C3223的封装应用图解、特点和优点、功能等，并给出了与SN75C3223相关的TI元器件型号供参考。

SN75C3223 - 3V 至 5V 多通道 RS-232 兼容线路驱动器/接收器 - 无 - RS-232收发器 - 德州仪器

产品描述

The SN65C3223 and SN75C3223 consist 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 devices provide 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 devices operate at data signaling rates up to 1 Mbit/s and a driver output slew rate of 24 V/µs to 150 V/µs.

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 µA. 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 µs. INVALID\ is low (invalid data) if the receiver input voltage is between –0.3 V and 0.3 V for more than 30 µs. Refer to Figure 4 for receiver input levels.

产品特性

  • Operate With 3-V to 5.5-V VCC Supply
  • Operate Up to 1 Mbit/s
  • Low Standby Current ...1 µA Typical
  • External Capacitors ...4 × 0.1 µF
  • Accept 5-V Logic Input With 3.3-V Supply
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human-Body Model (HBM)
  • Applications
    • Battery-Powered Systems, PDAs, Notebooks, Laptops, Palmtop PCs, and Hand-Held Equipment

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