MAX3245CWI RS232 Transceiver Interface IC - Equivalent & Substitute Parts

Part Overview

The MAX3245CWI is a full-duplex RS232 transceiver interface IC manufactured by Analog Devices Inc./Maxim Integrated, configured with 3 drivers and 5 receivers in a 28-SOIC surface mount package. This component is classified as obsolete, with 1162 units currently in stock. Due to its obsolete status, identifying parametrically equivalent substitute parts is essential for design continuity and long-term supply chain management in applications requiring RS232 serial communication interfaces.

Substiute Parts

MAX3245CWI

Analog Devices Inc./Maxim IntegratedIn Stock: 1256MAX3245CWI Datasheet

Current PartRFQ

MAX3245CWI+

Analog Devices Inc./Maxim IntegratedIn Stock: 922MAX3245CWI+ Datasheet

Parametric EquivalentRFQ

MAX3245ECWI+

Analog Devices Inc./Maxim IntegratedIn Stock: 1080MAX3245ECWI+ Datasheet

Parametric EquivalentRFQ

SN75C3243DW

Texas InstrumentsIn Stock: 1119SN75C3243DW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX3245CWI is determined by strict equivalence across the following critical parameters: RS232 protocol compliance, 3/5 driver/receiver configuration, full-duplex operation, 1 Mbps data rate capability, 3V to 5.5V supply voltage range, 500 mV receiver hysteresis, 0°C to 70°C operating temperature range, 28-SOIC package format, and surface mount mounting type. All identified substitute parts meet these electrical and mechanical specifications without deviation. Packaging format (Tube vs. standard) and product status (Active vs. Obsolete) are secondary considerations that do not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

For new designs and ongoing production requiring RS232 transceiver functionality equivalent to the MAX3245CWI, the MAX3245CWI+ or MAX3245ECWI+ are the primary selections. Both parts are manufactured by Analog Devices Inc./Maxim Integrated, maintain active product status, and carry ROHS3 compliance certification. These variants provide direct functional equivalence with improved regulatory compliance compared to the obsolete base part.

The SN75C3243DW from Texas Instruments represents an alternative cross-manufacturer substitute meeting identical electrical and mechanical specifications. This part carries Last Time Buy status and ROHS3 compliance. Selection of the Texas Instruments variant may be appropriate for applications where multi-source qualification is required or where existing supply agreements favor this manufacturer.

All three substitute parts are available in production quantities, with inventory levels ranging from 824 to 1057 units, supporting both immediate procurement and long-term supply planning.

Frequently Asked Questions (FAQ)

Q: Can MAX3245CWI+ directly replace MAX3245CWI in existing designs?

A: Yes. The MAX3245CWI+ is parametrically equivalent across all electrical specifications (RS232 protocol, 3/5 driver/receiver configuration, 1 Mbps data rate, 3V–5.5V supply range, 500 mV receiver hysteresis, 0°C–70°C operating temperature) and mechanical specifications (28-SOIC package, surface mount). The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between MAX3245CWI+ and MAX3245ECWI+?

A: Both parts are parametrically identical in electrical and mechanical specifications. The difference lies in the device designation suffix, which typically indicates manufacturing process or qualification level within Analog Devices' product line. Both are Active status and ROHS3 compliant.

Q: Is the SN75C3243DW from Texas Instruments a suitable substitute?

A: Yes. The SN75C3243DW meets all critical electrical parameters (RS232 protocol, 3/5 driver/receiver configuration, 1 Mbps data rate, 3V–5.5V supply, 500 mV receiver hysteresis, 0°C–70°C operating temperature) and mechanical specifications (28-SOIC package, surface mount). It is ROHS3 compliant but carries Last Time Buy status, indicating limited future availability.

Q: Does packaging format (Tube) affect functional compatibility?

A: No. Packaging format (Tube) is a logistics and handling specification that does not affect electrical or mechanical compatibility. All substitute parts function identically when soldered to equivalent PCB footprints.

Q: Are there supply chain considerations when selecting substitutes?

A: Yes. The MAX3245CWI+ and MAX3245ECWI+ maintain Active product status with stable inventory levels (824 and 1041 units respectively), supporting long-term supply continuity. The SN75C3243DW carries Last Time Buy status, indicating declining availability and potential future discontinuation. For new designs, Analog Devices variants are recommended for supply security.