MAX3227CAE+T

Overview

The MAX3227CAE+T is a single-driver, single-receiver RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +3.0V to +5.5V supply and achieves a typical supply current of 1µA through the AutoShutdown Plus feature. The device guarantees a data rate of 1Mbps for high-speed applications. It utilizes a dual charge pump requiring four small capacitors for operation. The component is housed in a 16-pin SSOP package and supports full-duplex communication.

Feature Summary

• AutoShutdown Plus technology automatically reduces power consumption when the interface is idle or disconnected.
• MegaBaud capability ensures reliable 1Mbps transmission speeds for demanding serial communications.
• Integrated dual charge pump generates required voltage levels from low-voltage supplies using minimal external components.

Applications

• Notebook, Subnotebook, and Palmtop Computers
• Cellular Phones
• Battery-Powered Equipment

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration. Confirm the 'C' designation aligns with the commercial temperature range requirements for the target application environment. Ensure compatibility with existing board layouts utilizing the 16-SSOP footprint.

Selection Notes

Select this model for designs requiring ultra-low standby power without BIOS modifications. The 1Mbps speed rating distinguishes it from lower-speed variants like the MAX3224. Verify that the single driver/receiver count matches the system's serial port architecture needs.

Part Context

This component belongs to the MAX3224–MAX3227 family of EIA/TIA-232 interfaces. It shares core features such as AutoShutdown Plus and MegaBaud operation with siblings like the MAX3225 and MAX3245, differing primarily in the number of drivers and receivers provided within the same package style.

Replacement Considerations

MAX3227CAE+ (Tube Packaging)

FAQ

How does the AutoShutdown Plus feature function?

It monitors receiver and transmitter inputs. If no valid signal transition occurs for more than 30 seconds, the device enters a low-power shutdown mode with 1µA supply current. It wakes up upon detecting a valid edge.

What is the purpose of the READY output pin?

The READY output asserts high when the internal charge pumps are regulating and the device has reached stable operating voltages, indicating it is ready to begin transmitting data.