MA3221C

Product Summary

The MAX3221 is a single-channel RS-232 line driver/receiver consists of one line driver, one line receiver, 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. The MAX3221 operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/μs driver output slew rate.

Parametrics

MA3221C absolute maximum ratings: (1)Supply voltage range, VCC: -0.3 V to 6 V; (2)Positive output supply voltage range, V+: -0.3 V to 7 V; (3)Negative output supply voltage range, V-: -0.3 V to .7 V; (4)Supply voltage difference, V+ - V-: 13 V; (5)Input voltage range, VI: Driver (FORCEOFF, FORCEON, EN): -0.3 V to 6 V; Receiver: -25 V to 25 V; (6)Output voltage range, VO: Driver: -13.2 V to 13.2 V; Receiver (INVALID): 0.3 V to VCC + 0.3 V; (7)Package thermal impedance, θJA (see Notes 2 and 3): DB package: 82℃/W; PW package: 108℃/W; (8)Operating virtual junction temperature, TJ: 150℃; (9)Storage temperature range, Tstg: -65℃ to 150℃.

Features

MA3221C 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)One Driver and One Receiver; (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), SNx5C3221; (10)Auto-Powerdown Feature Automatically Disables Drivers for Power Savings; (11)Applications, Battery-Powered, Hand-Held, and Portable Equipment; PDAs and Palmtop PCs; Notebooks, Subnotebooks, and Laptops; Digital Cameras; Mobile Phones and Wireless Devices.

Diagrams