Overview
The ST3243ECTR-E is a high-performance RS-232 transceiver designed by STMicroelectronics. This device is part of the ST3243E series, which includes 3 drivers and 5 receivers, along with a dual charge-pump circuit. It is engineered to meet the requirements of EIA/TIA and V.28/V.24 communication standards, ensuring reliable and efficient data transmission. The ST3243ECTR-E operates within a voltage range of 3 to 5.5 V and supports data rates up to 400 kbps, making it suitable for a variety of applications, including notebook computers, handheld devices, and peripherals.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Drivers/Receivers | 3/5 | - |
| Protocol | RS-232 | - |
| Data Rate | Up to 400 kbps | - |
| Voltage - Supply | 3 V to 5.5 V | - |
| Operating Temperature | 0°C to 70°C | - |
| Package | 28-TSSOP | - |
| ESD Protection | ± 15 kV (Human Body Model), ± 8 kV (IEC 1000-4-2 contact discharge) | - |
| Auto Power-Down Current | 1 µA | - |
| Receiver Hysteresis | 500 mV | - |
Key Features
- ESD Protection: The device offers robust ESD protection for RS-232 I/O pins, with ± 15 kV human body model and ± 8 kV IEC 1000-4-2 contact discharge.
- Auto Power-Down: The ST3243ECTR-E features an auto power-down mode that reduces supply current to 1 µA when the device does not sense a valid RS-232 signal.
- Low Power Consumption: The device achieves a low supply current of 1 µA in auto power-down mode.
- High Data Rate Capability: Guaranteed data rate of 250 kbps with the ability to support up to 400 kbps.
- True RS-232 Performance: Maintains RS-232 output levels from a 3.0 V to 5.5 V supply using a proprietary low-dropout transmitter output stage.
- Wake-Up Feature: The receiver R2 is always active to implement a wake-up feature for the serial port.
Applications
The ST3243ECTR-E is suitable for various applications, including:
- Notebook, subnotebook, and palmtop computers.
- Battery-powered equipment.
- Handheld devices and peripherals.
- Printers and other serial communication devices.
Q & A
- What is the operating voltage range of the ST3243ECTR-E?
The ST3243ECTR-E operates within a voltage range of 3 to 5.5 V. - What is the maximum data rate supported by the ST3243ECTR-E?
The device supports data rates up to 400 kbps. - What type of ESD protection does the ST3243ECTR-E offer?
The device offers ± 15 kV human body model and ± 8 kV IEC 1000-4-2 contact discharge ESD protection. - How does the auto power-down feature work?
The auto power-down feature reduces supply current to 1 µA when the device does not sense a valid RS-232 signal. - What is the typical supply current in auto power-down mode?
The typical supply current in auto power-down mode is 1 µA. - What is the package type of the ST3243ECTR-E?
The device is available in a 28-TSSOP package. - Is the ST3243ECTR-E RoHS compliant?
Yes, the ST3243ECTR-E is ROHS3 compliant. - What is the operating temperature range of the ST3243ECTR-E?
The operating temperature range is from 0°C to 70°C. - Does the ST3243ECTR-E support wake-up functionality?
Yes, the receiver R2 is always active to implement a wake-up feature for the serial port. - What are some typical applications of the ST3243ECTR-E?
Typical applications include notebook computers, handheld devices, peripherals, and printers.
