MAX3226ECUE+

Overview

The MAX3226ECUE+ is a single-channel RS-232 transceiver manufactured by Analog Devices (Maxim Integrated). It operates on a +3.0V to +5.5V supply and guarantees a data rate of 250kbps. The device features AutoShutdown Plus technology, reducing supply current to 1μA when idle. It includes ±15kV ESD protection on transmitter outputs and receiver inputs. The component utilizes a dual charge pump requiring four 0.1μF capacitors for operation. It is housed in a 16-pin TSSOP package with an operating temperature range of -40°C to +85°C.

Feature Summary

• AutoShutdown Plus functionality automatically reduces power consumption during periods of inactivity or cable disconnection.
• Integrated dual charge pump generates internal voltage rails from a single low-voltage supply using minimal external components.
• Enhanced electrostatic discharge protection ensures robustness against high-voltage static events on all signal lines.

Applications

• Notebook, subnotebook, and palmtop computers
• Cellular phones and battery-powered equipment
• Hand-held devices and peripherals such as printers

Procurement Notes

Verify the specific suffix 'EE' confirms the extended industrial temperature range (-40°C to +85°C) required for your design environment. Confirm that the 'U' package designation matches the 16-TSSOP footprint specifications in your PCB layout. Ensure the '+' suffix indicates lead-free and RoHS compliance status according to current manufacturing standards.

Selection Notes

Select this component when a single full-duplex RS-232 channel is sufficient for the interface requirements. The 250kbps data rate supports standard serial communication speeds without the higher power consumption associated with MegaBaud rates. Verify that the system can accommodate the required four external 0.1μF capacitors for the charge pump circuitry within the available board space.

Part Context

This part belongs to the MAX3224E through MAX3245E family of 3V-powered RS-232 transceivers. While other members like the MAX3225E offer 1Mbps speeds, the MAX3226E specifically provides one driver and one receiver at 250kbps. It shares the same core AutoShutdown Plus architecture and ESD protection levels as its siblings but differs in channel count and maximum guaranteed baud rate.

Replacement Considerations

The MAX3223ECAP+ serves as a functional alternative offering two drivers and receivers in a 20-pin SSOP package. For applications requiring identical pinouts and single-channel performance, verify compatibility with the MAX3226EEAE variant which utilizes a 16-SSOP package instead of TSSOP.