Key facts
- Brand
- STMicroelectronics
- Model
- ST3222
- Category
- Other Electronics
- Documents
- 4
- Languages
- EN
- Last added
- 2012-08-08
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ST ST3222B ST3222C handbook
The ST3222 is a 3 V powered EIA/TIA-232 and V.28/V.24 communications interface with low power requirements and high data-rate capabilities. ST3222 has a proprietary low dropout transmitter output stage providing true RS-232 performance from 3 to 3.6 V power supplies. The device requires only four small 0.1 mF standard external capacitors for operating from 3 V supply. The ST3222 has two receivers and two drivers. The ST3222 features a 1 mA shutdown mode that reduces power consumption and extends battery life in portable systems. Its receivers can remain active in shutdown mode, allowing external devices such as modems to be monitored using only 1 mA supply current. The device is guaranteed to run at data rates of 250 Kbps while maintaining RS-232 output levels. Typical applications are notebooks, sub- notebooks and palmtop computers, battery powered equipment, hand-held equipment, peripherals and printers.
Read onlineSTMicroelectronics ST3222 specifications
| Supply Voltage Range | 3 to 3.6 V |
|---|---|
| Maximum Supply Current (No Load) | 1 mA |
| Shutdown Mode Current (No Load) | 1 µA |
| Minimum Guaranteed Data Rate | 250 Kbps |
| Maximum Slew Rate | 6 V/µs |
| Receiver Input Voltage Range | ± 25 V |
| Operating Temperature (Industrial) | -40 to 85 °C |
Source: STMicroelectronics ST3222 RS-232 Drivers and Receivers Datasheet
All STMicroelectronics ST3222 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the minimum supply voltage for the ST3222?
The device operates from a power supply of 3V.
From: STMicroelectronics ST3222 RS-232 Drivers and Receivers Datasheet
How many external capacitors are required for operation?
The device requires only four small 0.1 µF standard external capacitors.
From: STMicroelectronics ST3222 RS-232 Drivers and Receivers Datasheet
What is the minimum guaranteed data rate?
The device guarantees a minimum data rate of 250Kbps.
From: STMicroelectronics ST3222E RS-232 Driver and Receiver Datasheet
How many external capacitors are required for the charge pump?
The charge pump requires only four small 0.1µF external capacitors.
From: STMicroelectronics ST3222E RS-232 Driver and Receiver Datasheet