TRS3227E Datasheet | Texas Instruments

FEATURES - 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 '3227E Devices - Latch-Up Performance Exceeds 100 m A Per JESD 78, Class II - ESD Protection for RS-232 I/O Pins - ±15 k V - Human-Body Model - ±8 k V - IEC61000-4-2, Contact Discharge - ±15 k V - 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 DB PACKAGE (TOP VIEW) READY 1 C1+ 2 V+ 3 C1- 4 C2+ 5 C2- 6 V- 7 RIN 8 16 FORCEOFF 15 VCC 14 GND 13 DOUT 12 FORCEON 11 DIN 10 INVALID 9 ROUT DESCRIPTION /ORDERING INFORMATION The TRS3227E consists of one line driver, one line receiver, and a dual charge-pump circuit with ±15-k V IEC 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 munication 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 TRS3227E 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...