Overview
The ST3232ECN, 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, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. It features a proprietary low-dropout transmitter output stage that ensures true RS-232 performance from 3 to 5 V supplies, utilizing a dual charge pump that requires only four small 0.1 μF external capacitors for operation from a 3 V supply. The ST3232ECN includes two receivers and two drivers, guaranteeing data rates of up to 250 kbps while maintaining RS-232 output levels.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Supply Voltage | 3 | - | 5.5 | V |
| Supply Current | 0.3 | 1 | - | mA |
| Data Rate | 250 | - | - | kbps |
| Slew Rate | 6 | - | - | V/μs |
| ESD Protection (Human Body Model) | ±15 | - | - | kV |
| ESD Protection (IEC 1000-4-2 Contact Discharge) | ±8 | - | - | kV |
| Operating Temperature | 0 | - | 70 | °C |
| Package Type | - | - | - | SO-16, TSSOP16 |
Key Features
- ESD protection for RS-232 I/O pins up to ±15 kV (human body model) and ±8 kV (IEC 1000-4-2 contact discharge).
- Low power consumption with a supply current of 300 μA.
- Guaranteed data rate of 250 kbps.
- Minimum guaranteed slew rate of 6 V/μs.
- 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 ST3232ECN? The ST3232ECN operates from 3 V to 5.5 V.
- How many drivers and receivers does the ST3232ECN have? The ST3232ECN has two drivers and two receivers.
- What is the maximum guaranteed data rate of the ST3232ECN? The maximum guaranteed data rate is 250 kbps.
- What level of ESD protection does the ST3232ECN offer? The ST3232ECN offers ESD protection up to ±15 kV (human body model) and ±8 kV (IEC 1000-4-2 contact discharge).
- What are the typical applications of the ST3232ECN? Typical applications include notebooks, subnotebooks, palmtop computers, battery-powered equipment, hand-held equipment, peripherals, and printers.
- What is the minimum guaranteed slew rate of the ST3232ECN? The minimum guaranteed slew rate is 6 V/μs.
- What packages is the ST3232ECN available in? The ST3232ECN is available in SO-16 and TSSOP16 packages.
- What is the supply current of the ST3232ECN? The supply current is 300 μA.
- Does the ST3232ECN meet EIA/TIA-232 specifications? Yes, the ST3232ECN meets EIA/TIA-232 specifications down to 3 V.
- What external components are required for the ST3232ECN to operate from a 3 V supply? The ST3232ECN requires four small 0.1 μF standard external capacitors for operation from a 3 V supply.
