TRS3237E

具有 +/-15kV IEC-ESD 保护的 3V 至 5.5V 多通道 1Mbps RS-232 线路驱动器/接收器; • Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU v.28 Standards\n• Operates With 3-V to 5.5-V VCC Supply\n• Operates From 250 kbits/s to 1 Mbit/s\n• Low Standby Current . . . 1 µA Typical\n• External Capacitors . . . 4 × 0.1 µF\n• Accepts 5-V Logic Input With 3.3-V Supply\n• Designed to Be Interchangeable With Industry Standard ’3237E Devices\n• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II\n• ESD Protection for RS-232 I/O Pins \n• ±15 kV – Human-Body Model (HBM)\n• ±8 kV – IEC61000-4-2, Contact Discharge\n• ±15 kV – IEC61000-4-2, Air-Gap Discharge\n \n• APPLICATIONS \n• Battery-Powered, Hand-Held, and Portable Equipment\n• PDAs and Palmtop PCs\n• Notebooks, Sub-Notebooks, and Laptops\n• Digital Cameras\n• Mobile Phones and Wireless Devices;

The TRS3237E consists of five line drivers, three 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. This device operates at data signaling rates of 250 kbit/s in normal operating mode (MBAUD = GND) and 1Mbit/s when MBAUD = VCC. The driver output slew rate is a maximum of 30 V/µs. The TRS3237E transmitters are disabled and the outputs are forced into high-impedance state when the device is in shutdown mode (SHDN = GND) and the supply current falls to less than 1 µA. Also, during shutdown, 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 enable (EN) high. ROUT1B remains active all the time, regardless of the EN and SHDN condition. The TRS3237EC is characterized for operation from 0°C to 70°C. The TRS3237EI is characterized for operation from –40°C to 85°C.

TRS3237E

3-V TO 5.5-V MULTICHANNEL RS-232 1-MBit/s LINE DRIVER/RECEIVER

TRS3237E_1

3-V TO 5.5-V MULTICHANNEL RS-232 1-MBit/s LINE DRIVER/RECEIVER

TRS3237ECDB

3-V TO 5.5-V MULTICHANNEL RS-232 1-MBit/s LINE DRIVER/RECEIVER

TRS3237ECDBG4

3-V TO 5.5-V MULTICHANNEL RS-232 1-MBit/s LINE DRIVER/RECEIVER

TRS3237ECDBR

3-V TO 5.5-V MULTICHANNEL RS-232 1-MBit/s LINE DRIVER/RECEIVER

TRS3237ECDBRG4

3-V TO 5.5-V MULTICHANNEL RS-232 1-MBit/s LINE DRIVER/RECEIVER

TRS3237ECDW

3-V TO 5.5-V MULTICHANNEL RS-232 1-MBit/s LINE DRIVER/RECEIVER

TRS3237ECDWG4

3-V TO 5.5-V MULTICHANNEL RS-232 1-MBit/s LINE DRIVER/RECEIVER

TRS3237ECDWR

3-V TO 5.5-V MULTICHANNEL RS-232 1-MBit/s LINE DRIVER/RECEIVER