Product Summary

The MA3222C is a 3V to 5.5V multichannel RS-232 line driver/receiver with ±15kV ESD protection. The MA3222C consists of two line drivers, two line receivers, and a dual charge-pump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). The MA3222C 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. The device operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/μs driver output slew rate. The applications of the MA3222C include Battery-Powered Systems, PDAs, Notebooks, Laptops, Palmtop PCs, and Hand-Held Equipment.

Parametrics

MA3222C absolute maximum ratings: (1)Supply voltage range, VCC (see Note 1): -0.3 V to 6 V; (2)Positive output supply voltage range, V+ (see Note 1): -0.3 V to 7 V ; (3)Negative output supply voltage range, V- (see Note 1): 0.3 V to -7 V; (4)Supply voltage difference, V+ -V- (see Note 1): 13 V; (5)Input voltage range, VI : Drivers, EN, PWRDOWN : -0.3 V to 6 V; (6)Receivers: -25 V to 25 V; (7)Output voltage range, VO: Drivers: -13.2 V to 13.2 V; (8)Receivers: -0.3 V to VCC + 0.3 V; (9)Package thermal impedance, θJA (see Notes 2 and 3): DB package 70 ℃/W; (10)DW package: 58℃/W; (11)PW package: 83℃/W; (12)Operating virtual junction temperature, TJ: 150℃; (13)Storage temperature range, Tstg: -65 to 150℃.

Features

MA3222C features: (1)RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human-Body Model (HBM); (2)Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU v.28 Standards; (3)Operates With 3-V to 5.5-V VCC Supply; (4)Operates Up To 250 kbit/s; (5)Two Drivers and Two Receivers; (6)Low Standby Current: 1 μA Typical; (7)External Capacitors: 4 × 0.1 μF; (8)Accepts 5-V Logic Input With 3.3-V Supply; (9)Alternative High-Speed Pin-Compatible Device (1 Mbit/s) SNx5C3222.

Diagrams

MA3222C block diagram