MAX3318CDBR

Overview

The MAX3318CDBR is a low-power RS-232 transceiver manufactured by Texas Instruments, designed for operation with a single supply voltage ranging from 2.25 V to 3 V. It integrates two drivers and two receivers within a 20-pin SSOP package, supporting full-duplex communication at data rates up to 460 kbps. The device operates within an industrial temperature range of 0°C to 70°C and features a shutdown mode that reduces power consumption significantly. Key electrical specifications include a typical operating supply current of 2 mA and receiver hysteresis of 300 mV to ensure noise immunity.

Feature Summary

• Integrates dual drivers and dual receivers for full-duplex RS-232 communication in a compact surface-mount package.
• Operates on a single low-voltage supply ranging from 2.25 V to 3 V, suitable for battery-powered applications.
• Includes a dedicated shutdown pin to minimize power consumption during idle periods.
• Features receiver hysteresis to improve signal integrity and noise rejection in noisy environments.

Applications

• Portable devices requiring low-power serial communication interfaces
• Battery-operated equipment with strict power constraints
• Industrial control systems utilizing RS-232 protocols

Procurement Notes

Verify the specific suffix CDBR indicates the commercial temperature grade (0°C to 70°C) and SSOP-20 packaging. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure the ordering quantity matches the standard reel size of 2,000 units if bulk procurement is required. Cross-reference the datasheet revision date to confirm technical specifications have not changed.

Selection Notes

Select this component when a low-voltage (2.25 V to 3 V) RS-232 interface is required for space-constrained designs. The commercial temperature range limits suitability for harsh environments compared to the I-grade variant. Verify that the 460 kbps data rate meets system requirements. Consider the SSOP-20 footprint compatibility during PCB layout planning.

Part Context

The MAX3318 belongs to the MAX3318 family of low-power RS-232 transceivers. This series is characterized by its ability to operate from a single low-voltage supply while providing standard RS-232 output levels. The CDBR variant specifically denotes the commercial temperature range and SSOP package, distinguishing it from other temperature grades or package options within the same functional family.

Replacement Considerations

MAX3318IDBR: Industrial temperature grade (-40°C to 85°C) with identical electrical characteristics and package.

FAQ

What is the maximum data rate supported by the MAX3318CDBR?

The device supports data rates up to 460 kbps.

Does the MAX3318CDBR support full-duplex communication?

Yes, it integrates two drivers and two receivers, enabling full-duplex operation.

What is the operating supply voltage range for this component?

The MAX3318CDBR operates with a single supply voltage between 2.25 V and 3 V.