Key facts
- Brand
- STMicroelectronics
- Model
- 400KBPS
- Industry
- Industrial
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- 5
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- EN
- Last added
- 2012-06-15
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ST ST3243 3 TO 5.5V 400KBPS RS-232 TRANSCEIVER WITH AUTO-POWERDOWN handbook
The ST3243 is an RS-232 transceiver designed to operate from a 3.0V to 5.5V supply voltage, achieving a minimum guaranteed data rate of 250kbps and a slew rate range of 6V/µs. The device integrates three drivers, five receivers, and a dual charge-pump circuit to meet EIA/TIA-232 specifications without requiring external capacitors for basic operation.
A key feature is the auto-powerdown function, which reduces supply current to 1mA when no valid RS-232 signal is detected on the receiver inputs. The device includes a dedicated wake-up receiver (R2) that remains active even in power-down modes to detect incoming signals. It is available in SO-28, SSOP-28, and TSSOP28 packages.
STMicroelectronics 400KBPS specifications
| Supply Voltage Range | 3.0V to 5.5V |
|---|---|
| Maximum Data Rate | 400 Kbps |
| Minimum Guaranteed Data Rate | 250kbps |
| Supply Current (Auto-powerdown) | 1mA |
| Slew Rate Range | 6V/µs |
| Number of Drivers and Receivers | 3 drivers, 5 receivers |
Source: ST ST3243 3 TO 5.5V 400KBPS RS-232 TRANSCEIVER WITH AUTO-POWERDOWN handbook
All STMicroelectronics 400KBPS documents by type
Ratings, dimensions and ordering codes, for selection and design work.
- ST ST3243 3 TO 5.5V 400KBPS RS-232 TRANSCEIVER WITH AUTO-POWERDOWN handbook 11 p
- ST ST3243E ±15KV ESD PROTECTED 3 TO 5.5V 400KBPS RS-232 TRANSCEIVER WITH AUTO-POWERDOWN handbook(1) 14 p
- ST ST3243E 15KV ESD PROTECTED 3 TO 5.5V 400KBPS RS-232 TRANSCEIVER WITH AUTO-POWERDOWN handbook 18 p
- ST ST3241E ±15KV ESD PROTECTED 3 TO 5.5V 400KBPS RS-232 TRANSCEIVER WITH AUTO-POWERDOWN handbook 10 p
- ST ST3232 3 TO 5.5V LOW POWER UP TO 400KBPS RS-232 DRIVERS AND RECEIVERS handbook 11 p
Questions answered in these manuals
What is the supply voltage range for the ST3243?
The device operates with a supply voltage ranging from 3.0V to 5.5V.
From: ST ST3243 3 TO 5.5V 400KBPS RS-232 TRANSCEIVER WITH AUTO-POWERDOWN handbook
Which receiver input is always active?
Receiver R2 is always active to implement a wake-up feature for the serial port.
From: ST ST3243 3 TO 5.5V 400KBPS RS-232 TRANSCEIVER WITH AUTO-POWERDOWN handbook
What is the minimum supply voltage for the ST3243E?
The device operates with a supply voltage ranging from 3.0V to 5.5V.
What packages are available for the ST3243E?
The device is available in SO-28, SSOP-28, TSSOP28, and Flip-Chip28 packages.
What is the supply voltage range for the ST3243E?
The device operates from a 3.0V to 5.5V supply.
From: ST ST3243E 15KV ESD PROTECTED 3 TO 5.5V 400KBPS RS-232 TRANSCEIVER WITH AUTO-POWERDOWN handbook
What packages is the ST3243E available in?
It is available in SO-28, SSOP-28, TSSOP28 and Flip-Chip28 packages.
From: ST ST3243E 15KV ESD PROTECTED 3 TO 5.5V 400KBPS RS-232 TRANSCEIVER WITH AUTO-POWERDOWN handbook