MAX3318CDB

Overview

The MAX3318CDB is a low-power RS-232 transceiver manufactured by Texas Instruments, designed for portable applications requiring extended battery life. It operates within a supply voltage range of 2.25 V to 3 V and supports data rates up to 460 kbps. The device integrates two drivers and two receivers in a full-duplex configuration. It features a shutdown mode that reduces power consumption significantly. The component is housed in a 20-pin SSOP package and includes 15 kV ESD protection on all pins. It functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrated charge pump eliminates the need for external capacitors
• Shutdown mode provides ultra-low power consumption for battery-operated devices
• High ESD protection rating ensures robustness against electrostatic discharge events

Applications

• Portable medical instruments
• Handheld data collection terminals
• Industrial control systems with limited power budgets

Procurement Notes

Verify the specific suffix 'CDB' corresponds to the commercial temperature grade (-40°C to +85°C) and the 20-SSOP package variant. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets before procurement. Ensure the ordering part number matches the required pinout and thermal specifications for the target PCB layout.

Selection Notes

Select this component when designing systems powered by single-cell lithium or nickel-metal hydride batteries. It serves as a direct replacement for higher-voltage RS-232 transceivers in space-constrained designs. Verify that the 460 kbps data rate meets application requirements. Consider the 20-SSOP footprint during schematic capture to ensure compatibility with existing board layouts.

Part Context

This part belongs to the MAX3318 family of low-power RS-232 transceivers. It shares functional similarities with other Maxim Integrated/Texas Instruments parts like the MAX3232 but differs in operating voltage and capacitor requirements. The 'CDB' suffix denotes the commercial temperature range and SSOP packaging, distinguishing it from industrial grade or TSSOP variants.

Replacement Considerations

MAX3318IDBR: Industrial temperature grade version in SSOP-20 package. MAX3318IPWR: Industrial temperature grade version in TSSOP-20 package. MAX3318CPWR: Commercial temperature grade version in TSSOP-20 package.