The MAX3221CAE is a single-channel RS-232 transceiver IC that offers a 250kbps data rate and low-power shutdown mode. It is designed to convert TTL/CMOS logic levels to RS-232 voltage levels and vice versa, making it ideal for interfacing microcontrollers with RS-232 devices.
MAX3221CAE Key Features
- Single-Channel RS-232 Transceiver: Provides one channel for bi-directional communication.
- Data Rate: Supports data rates up to 250kbps, suitable for various serial communication applications.
- Low-Power Shutdown Mode: Features a low-power shutdown mode for power-saving applications.
- Wide Operating Voltage Range: Operates from a single +3.0V to +5.5V supply, making it compatible with a wide range of systems.
- ESD Protection: Includes ±15kV ESD protection on the RS-232 pins, ensuring robust operation in harsh environments.
- Small Package: Available in a space-saving 16-pin SSOP package.
MAX3221CAE Applications
- Microcontroller Interface: Ideal for interfacing microcontrollers with RS-232 devices.
- Industrial Control Systems: Suitable for use in industrial control systems requiring RS-232 communication.
- Serial Communication: Used in various serial communication applications requiring RS-232 compatibility.
MAX3221CAE Functionality
The MAX3221CAE is a single-channel RS-232 transceiver that converts TTL/CMOS logic levels to RS-232 voltage levels and vice versa.
It provides reliable and efficient communication between microcontrollers and RS-232 devices.
MAX3221CAE Usage Guides
- Power Supply: Connect VCC (Pin 12) to the supply voltage (3.0V to 5.5V).
- Data Connections: Connect the Cap1+/Cap1- and Cap2+/Cap2- pins to the RS-232 data lines.
- Shutdown Control: Use the SHDN (Pin 7) pin to enable or disable the device's low-power shutdown mode.
MAX3221CAE Equivalents
For similar functionalities, consider these alternatives to the MAX3221CAE:
- MAX3222CAE: This is a similar IC from Maxim Integrated, offering similar functionality to the MAX3221CAE with different package options or slight variations in specifications.
- ST3232C: This is an RS-232 transceiver IC from STMicroelectronics, which is pin-compatible with the MAX3221CAE and provides similar functionality.
MAX3221CAE Specifications
| Product Category |
RS-232 Interface IC |
RoHS |
Details |
| Mounting Style |
SMD/SMT |
Package / Case |
SSOP-16 |
| Series |
MAX3221 |
Function |
Transceiver |
| Data Rate |
235 kb/s |
Number of Drivers |
1 Driver |
| Number of Receivers |
1 Receiver |
Duplex |
Full Duplex |
| Supply Voltage - Max |
5.5 V |
Supply Voltage - Min |
3 V |
| Operating Supply Current |
1 mA |
Minimum Operating Temperature |
0 C |
| Maximum Operating Temperature |
+ 70 C |
ESD Protection |
Without ESD Protection |
| Brand |
Analog Devices / Maxim Integrated |
Height |
1.78 mm |
| Length |
6.33 mm |
Operating Supply Voltage |
3 V to 5.5 V |
| Product |
RS-232 Transceivers |
Product Type |
RS-232 Interface IC |
| Propagation Delay Time |
0.3 us |
Shutdown |
With Shutdown |
| Factory Pack Quantity |
76 |
Subcategory |
Interface ICs |
| Supply Type |
Single Supply |
Width |
5.38 mm |
| Part # Aliases |
MAX3221 |
Unit Weight |
0.004586 oz |
MAX3221CAE Frequently Asked Questions
Q: Can the MAX3221CAE operate at higher data rates?
A: The MAX3221CAE is designed to operate at data rates up to 250kbps. For higher data rates, consider using alternative devices with higher-speed capabilities.
Q: Is the MAX3221CAE suitable for battery-powered applications?
A: Yes, the MAX3221CAE features a low-power shutdown mode, making it suitable for battery-powered applications requiring RS-232 communication.
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