MAX3222CPWR UART Interface ICc RS-232 Interface IC 3-5.5V Mult-Ch RS232
uart level shifter ic
,usb serial converter chip
MAX3222CPWR UART Interface ICc RS-232 Interface IC 3-5.5V Mult-Ch RS232
1 Features
- RS-232 Bus-Pin ESD Protection Exceeds ±15 kV 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 kbps
-
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
-
Alternative High-Speed Pin-Compatible Device (1 Mbps)
– SNx5C3222
2 Applications
-
Battery-Powered Systems
-
PDAs
-
Notebooks
-
Laptops
-
Palmtop PCs
-
Hand-held Equipment
3 Description
The MAX3222 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 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 data signaling rates up to 250 kbit/s and a maximum of 30-V/μs driver output slew rate.
The MAX3222 can be placed in the power-down mode by setting PWRDOWN 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 the high-impedance state. Receiver outputs also can be placed in the high- impedance state by setting EN high.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
MAX3222CDW, MAX322IDW |
SOIC (20) |
12.80 mm × 7.50 mm |
|
MAX3222CDB, MAX322IDB |
SSOP (20) |
7.20 mm × 5.30 mm |
|
MAX3222CPW, MAX322IPW |
TSSOP (20) |
6.50 mm × 4.40 mm |
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