Overview
The MAX3232EUE+TG11 is a dual-channel RS-232 transceiver produced by Maxim Integrated, now a part of Analog Devices Inc. This device is designed to provide true RS-232 performance from a single 3.0V to 5.5V supply voltage, making it highly versatile for various communication applications. It features a proprietary low-dropout transmitter output stage and a dual charge pump, which requires only four small 0.1µF external capacitors to generate the necessary V+ and V- supplies.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply Voltage (VCC) | 3.0 | 5.5 | V | ||
| Maximum Data Rate | RL = 3kΩ, CL = 1000pF, one transmitter switching | 120 | 235 | kbps | |
| Receiver Propagation Delay | R_IN to R_OUT, CL = 150pF | 0.3 | 0.3 | μs | |
| Receiver Hysteresis | 300 | mV | |||
| Operating Temperature | -40 | 85 | °C | ||
| Output Short-Circuit Current | VOUT = ±12V, VCC = 0V or 3V to 5.5V, transmitters disabled | ±35 | ±60 | mA |
Key Features
- True RS-232 performance from a single 3.0V to 5.5V supply voltage.
- Proprietary low-dropout transmitter output stage and dual charge pump.
- Guaranteed data rate of 120kbps, with typical operation at 235kbps.
- Low power consumption and high efficiency.
- Shutdown mode with high impedance output stage.
- Pin, package, and functionally compatible with industry-standard MAX242 and MAX232.
- 300mV receiver hysteresis for improved noise immunity.
Applications
- PC-to-PC communication using software like LapLink™.
- Industrial control systems and automation.
- Point-of-sale terminals and other commercial equipment.
- Medical devices requiring reliable serial communication.
- Embedded systems and IoT devices.
Q & A
- What is the supply voltage range for the MAX3232EUE+TG11?
The supply voltage range is from 3.0V to 5.5V.
- What is the maximum guaranteed data rate for the MAX3232EUE+TG11?
The maximum guaranteed data rate is 120kbps.
- How many external capacitors are required for the charge pump?
Four small 0.1µF external capacitors are required.
- What is the operating temperature range for the MAX3232EUE+TG11?
The operating temperature range is from -40°C to 85°C.
- Is the MAX3232EUE+TG11 compatible with industry-standard RS-232 transceivers?
Yes, it is pin, package, and functionally compatible with industry-standard MAX242 and MAX232.
- What is the receiver hysteresis of the MAX3232EUE+TG11?
The receiver hysteresis is 300mV.
- Can the MAX3232EUE+TG11 operate in shutdown mode?
Yes, the device has a shutdown mode with a high impedance output stage.
- What is the typical propagation delay of the receiver?
The typical propagation delay of the receiver is 0.3μs.
- Can the transmitters be paralleled to drive multiple receivers?
Yes, the transmitters can be paralleled to drive multiple receivers or mice.
- What is the output short-circuit current of the MAX3232EUE+TG11?
The output short-circuit current is ±35mA to ±60mA.
