MAX3222E
www. ti. com. . . SLLS708A – JANUARY 2006 – REVISED SEPTEMBER 2009
3-V TO 5. 5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER WITH ±15-kV ESD PROTECTION
Check for Samples: MAX3222E
FEATURES
1
• ESD Protection for RS-232 Bus Pins – ±15-kV Human-Body Model (HBM) – ±8-kV IEC61000-4-2, Contact Discharge – ±15-kV IEC61000-4-2, Air-Gap Discharge
• 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 500 kbit/s • Two Drivers and Two Receivers • Low Standby Current . . . 1 μA Typ • External Capacitors . . . 4 × 0. 1 μF • Accepts 5-V Logic Input With 3. 3-V Supply • Alternative High-Speed Pin-Compatible Device
(1 Mbit/s) for SNx5C3222E
APPLICATIONS
• Battery-Powered Systems • PDAs • Notebooks • Laptops • Palmtop PCs • Hand-Held Equipment
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 device operates at typical data signaling rates up to 500 kbit/s and a maximum of 30-V/μs driver output slew rate.
DB, DW, OR PW PACKAGE (TOP VIEW)
EN C1+
V+ C1− C2+ C2−
V− DOUT2
RIN2 ROUT2
1 2 3 4 5 6 7 8 9 10
20 PWRDOWN 19 VCC 18 GND 17 DOUT1 16 RIN1 15 ROUT1 14 NC 13 DIN1 12 DIN2 11 NC
NC − No internal connection
DESCRIPTION/ORDERING INFORMATION
The MAX3222E 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 MAX3222E can be placed in the power-down mode by setting the power-down (PWRDOWN) input low,
which draws only 1 μA from the power supply. When the device is powered down, the receivers remain active
while the drivers are placed in t...
MAX3222E PDF File
