SN75C3222 - 3V 至 5.5V 多通道 RS-232 兼容线路驱动器/接收器

SN75C3222是TI德州仪器公司的一款无产品，SN75C3222是3V 至 5.5V 多通道 RS-232 兼容线路驱动器/接收器，本站介绍了SN75C3222的封装应用图解、特点和优点、功能等，并给出了与SN75C3222相关的TI元器件型号供参考。

SN75C3222 - 3V 至 5.5V 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 SN65C3222 and SN75C3222 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.

The SN65C3222 and SN75C3222 can be placed in the power-down mode by setting PWRDOWN\ low, which draws only 1 µA from the power supply. When the devices are 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.

产品特性

Operates With 3-V to 5.5-V VCC Supply
Operates up to 1 Mbit/s
Low Standby Current ...1 µA Typical
External Capacitors ...4 × 0.1 µF
Accepts 5-V Logic Input With 3.3-V Supply
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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