TRS3223-Q1 Datasheet | Texas Instruments

FEATURES - Qualified for Automotive Applications - RS-232 Bus-Pin ESD Protection Exceeds ±15 k V Using Human-Body Model (HBM) - 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 up to 250 kbit/s - Two Drivers and Two Receivers - Low Standby Current . . . 1 µA Typical - External Capacitors . . . 4 × 0.1 µF - Accepts 5-V Logic Input With 3.3-V Supply PW PACKAGE (TOP VIEW) EN 1 C1+ 2 V+ 3 C1- 4 C2+ 5 C2- 6 V- 7 DOUT2 8 RIN2 9 ROUT2 10 20 FORCEOFF 19 VCC 18 GND 17 DOUT1 16 RIN1 15 ROUT1 14 FORCEON 13 DIN1 12 DIN2 11 INVALID DESCRIPTION /ORDERING INFORMATION The TRS3223 consists of two line drivers, two line receivers, and a dual charge-pump circuit with ±15-k V 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. The device operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew rate. 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....