ST ST3232EB ST3232EC handbook

About this manual

The ST3232E is a 3 V powered communication interface designed for notebook computers, subnotebooks, palmtops, and hand-held equipment. It features two drivers and two receivers that meet EIA/TIA-232 specifications down to 3 V supplies using a proprietary low dropout transmitter output stage with a dual charge pump.

The device offers enhanced electrostatic discharge (ESD) protection, rated at +15 kV for the human body model and +8 kV for IEC 1000-4-2 contact discharge. It guarantees a minimum data rate of 250 kbps with a slew rate of 6 V/us while maintaining RS-232 output levels.

What's inside

• Pin configuration
• Absolute maximum ratings
• Electrical characteristics
• Application circuits
• Typical performance characteristics
• Package mechanical data

Specifications

Frequently asked questions

Does this chip support RS-232 standards at low voltages?

Yes, it meets EIA/TIA-232 specifications down to 3 V.

What is the minimum guaranteed data rate for the ST3232EB and ST3232EC?

The device is guaranteed to run at data rates of 250 kbps while maintaining RS-232 output levels.

What is the maximum supply voltage for the ST3232EB and ST3232EC?

The maximum supply voltage is 6 V.

What capacitance values are required for the charge pump capacitors when the supply voltage is between 3.0 V and 3.6 V?

The required capacitance values for C1, C2, C3, C4, and Cbypass are all 0.1 uF.