Overview
The ST3232ECDR, produced by STMicroelectronics, is a 3 V powered EIA/TIA-232 and V.28/V.24 communication interface. This device is designed with low power requirements and high data-rate capabilities, making it suitable for a variety of applications. It features enhanced electrostatic discharge (ESD) protection and a proprietary low-dropout transmitter output stage, ensuring true RS-232 performance from 3 to 5 V supplies. The ST3232ECDR includes two receivers and two drivers, and it is guaranteed to operate at data rates of up to 250 kbps while maintaining RS-232 output levels.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | -0.3 to 6 | V |
| Doubled Voltage Terminal (V+) | (VCC - 0.3) to 7 | V |
| Inverted Voltage Terminal (V-) | 0.3 to -7 | V |
| Transmitter Input Voltage Range (TIN) | -0.3 to 6 | V |
| Receiver Input Voltage Range (RIN) | ± 25 | V |
| Transmitter Output Voltage Range (TOUT) | ± 13.2 | V |
| Receiver Output Voltage Range (ROUT) | -0.3 to (VCC + 0.3) | V |
| Supply Current (ISUPPLY) | 0.3 to 1 | mA |
| Data Transfer Rate | Up to 250 | kbps |
| ESD Protection Voltage (Human Body Model) | ±15 kV | |
| ESD Protection Voltage (IEC 1000-4-2 Contact Discharge) | ±8 kV | |
| Maximum Junction Temperature (Tj) | 150 | °C |
| Thermal Resistance Junction-to-Case (Rth-jc) | 30 (SO-16), 25 (TSSOP16) | °C/W |
| Thermal Resistance Junction-to-Ambient (Rth-ja) | 95 (SO-16 and TSSOP16) | °C/W |
Key Features
- Enhanced electrostatic discharge (ESD) protection: ±15 kV human body model and ±8 kV IEC 1000-4-2 contact discharge.
- Low power consumption: 300 µA supply current.
- High data-rate capabilities: Up to 250 kbps.
- True RS-232 performance from 3 to 5 V supplies using a proprietary low-dropout transmitter output stage.
- Dual charge pump requiring only four small 0.1 µF external capacitors.
- Two receivers and two drivers.
- Meets EIA/TIA-232 specifications down to 3 V.
- Available in SO-16 and TSSOP16 packages.
Applications
- Notebook, subnotebook, and palmtop computers.
- Battery-powered equipment.
- Hand-held equipment.
- Peripherals and printers.
Q & A
- What is the operating voltage range of the ST3232ECDR?
The ST3232ECDR operates from a supply voltage (VCC) of 3 to 5.5 V.
- What is the maximum data transfer rate of the ST3232ECDR?
The device is guaranteed to operate at data rates of up to 250 kbps.
- What kind of ESD protection does the ST3232ECDR offer?
The ST3232ECDR offers ±15 kV human body model and ±8 kV IEC 1000-4-2 contact discharge ESD protection.
- How many receivers and drivers does the ST3232ECDR have?
The ST3232ECDR has two receivers and two drivers.
- What are the package options for the ST3232ECDR?
The device is available in SO-16 and TSSOP16 packages.
- What is the typical supply current of the ST3232ECDR?
The typical supply current is 300 µA.
- Does the ST3232ECDR meet EIA/TIA-232 specifications?
Yes, the ST3232ECDR meets EIA/TIA-232 specifications down to 3 V.
- What is the maximum junction temperature for the ST3232ECDR?
The maximum junction temperature is 150 °C.
- What are some typical applications for the ST3232ECDR?
Typical applications include notebook and hand-held devices, battery-powered equipment, and peripherals.
- How many external capacitors are required for the charge pump operation?
The charge pump requires only four small 0.1 µF external capacitors.
