TRSF3221E Datasheet | Texas Instruments

SLLS822B - JULY 2007 - REVISED JULY 2021 TRSF3221E 3-V to 5.5-V Single-Channel RS-232 1-Mbit Line Driver and Receiver With ±15-k V IEC ESD Protection in Small Package 1 Features - ESD protection for RS-232 pins - ±15-k V Human-body model (HBM) - ±8-k V IEC 61000-4-2 Contact discharge - ±15-k V IEC 61000-4-2 Air-gap discharge - Operates with 3-V to 5.5-V VCC supply - Operates up to 1 Mbit/s - Low-speed pin-patible device (250 kbit/s) - TRS3221E - Available in near chip-scale package, 16-pin VQFN (RGT, 82% smaller than TSSOP package) - Low standby current: 1 μA typical - External capacitors : 4 × 0.1 μF - Accepts 5-V logic input with 3.3-V supply - Auto-powerdown feature automatically disables drivers for power savings 2 Applications - Industrial PCs - Wired networking - Data center and enterprise puting - Battery-powered systems - PDAs - Notebooks - Laptops - Palmtop PCs - Hand-held equipment 3 Description The TRSF3221E 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 TRSF3221E 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 TRSF3221E operates at data signaling rates up to 1 Mbit/s and a driver output slew rate of 24 V/μs to 150...