TRS3227 - 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

TRS3227是TI德州仪器公司的一款无产品，TRS3227是具有 +/-15-kV IEC ESD 保护的 3V 至 5.5V 单通道 RS-232 线路驱动器/接收器，本站介绍了TRS3227的封装应用图解、特点和优点、功能等，并给出了与TRS3227相关的TI元器件型号供参考。

TRS3227 - 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 - 无 - RS-232收发器 - 德州仪器

产品描述

产品特性

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 at Least 1 Mbit/s
Low Standby Current . . . 1 µA Typ
External Capacitors . . . 4 × 0.1 µF
Accepts 5-V Logic Input With 3.3-V Supply
Designed to Be Interchangeable With industry Standard '3227 Devices
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
ESD Protection for RS-232 I/O Pins
- ±15 kV - Human-Body Model
- ±8 kV - IEC61000-4-2, Contact Discharge
- ±8 kV - IEC61000-4-2, Air-Gap Discharge
Auto-Powerdown Plus Feature Automatically Disables Drivers for Power Savings
Packaged in Plastic Shrink Small-Outline Package
APPLICATIONS
- Battery-Powered, Hand-Held, and Portable Equipment
- PDAs and Palmtop PCs
- Notebooks, Sub-Notebooks, and Laptops
- Digital Cameras
- Mobile Phones and Wireless Devices

DESCRIPTION/ORDERING INFORMATION

The TRS3227 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. This device operates at data-signaling rates of 1 Mbit/s in normal operating mode and a maximum of 30-V/µs driver output slew rate. This device also features a logic-level output (READY) that asserts when the charge pump is regulating and the device is ready to begin transmitting.

The TRS3227 achieves a 1-µA supply current using the auto-powerdown plus feature. This device automatically enters a low-power powerdown mode when the RS-232 cable is disconnected or the drivers of the connected peripherals are inactive for more than 30 s. It turns on again when it senses a valid transition at any driver or receiver input. Auto-powerdown saves power without changes to the existing BIOS or operating system.

The TRS3227C is characterized for operation from 0°C to 70°C. The TRS3227I is characterized for operation from -40°C to 85°C.

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