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1. Description
The MAX3232EIDR device consists of two line drivers, two-line receivers, and a dual charge-pump circuit with ±15-kV IEC ESD protection pin to pin (serial-port connection pins, including GND). The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. The devices operate at data signaling rates up to 250 kbit/s and a maximum of 30-V/μs driver output slew rate.
2. Features
1. ESD Protection for RS-232 Bus Pins
– ±15 kV (HBM)
– ±8 kV (IEC61000-4-2, Contact Discharge)
– ±15 kV (IEC61000-4-2, Air-Gap Discharge)
2. Meets or Exceeds the Requirements of TIA/EIA232-F and ITU V.28 Standards
3. Operates With 3-V to 5.5-V VCC Supply
4. Operates up to 250 kbit/s
5. Two Drivers and Two Receivers
6. Low Supply Current: 300 μA (Typical)
7. External Capacitors: 4 × 0.1 μF
8. Accepts 5-V Logic Input With 3.3-V Supply
9. Pin Compatible to Alternative High-Speed Devices (1 Mbit/s)
– SN65C3232E (–40°C to +85°C)
– SN75C3232E (0°C to 70°C)
3. Applications
1. Battery-Powered Systems
2. Notebooks
3. Laptops
4. Palmtop PCs
5. Hand-Held Equipment
4. Simplified Diagram
5. Pin Configuration and Functions
6. Typical Application
