MAX3221CDBR MAX3221CPWR UART Interface IC RS-232 Interface IC 1-Channel RS-232
uart multiplexer ic
,uart level shifter ic
MAX3221CDBR MAX3221CPWR UART Interface IC RS-232 Interface IC 1-Channel RS-232
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
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Operates With 3-V to 5.5-V VCC Supply
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Operates up to 250 kbps
-
One Driver and One Receiver
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Low Standby Current: 1 μA Typical
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External Capacitors: 4 × 0.1 μF
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Accepts 5-V Logic Input With 3.3-V Supply
-
Alternative High-Speed Pin-Compatible Device (1 Mbps)
– SNx5C3221
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Automatic Power-Down Feature Automatically Disables Drivers for Power Savings
2 Applications
-
Battery-Powered, Hand-Held, and Portable Equipment
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Notebooks, Subnotebooks, and Laptops
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Digital Cameras
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Mobile Phones and Wireless Devices
3 Description
The MAX3221 device consists of one line driver, one line receiver with dedicated enable pin, 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. These devices operate at data signaling rates up to 250 kbps and a maximum of 30-V/μs driver output slew rate.
Flexible control options for power management are available when the serial port is inactive. The automatic power-down feature functions when FORCEON is low and FORCEOFF is high. During this mode of operation, if the device does not sense a valid
RS-232 signal on the receiver input, the driver output is disabled and the supply current is reduced to 1 μA. The INVALID output notifies the user if an RS-232 signal is present at the receiver input.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
MAX3221xDB |
SSOP (32) |
6.20 mm × 5.30 mm |
|
MAX3221xPW |
TSSOP (32) |
5.00 mm × 4.40 mm |
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