MAX250CPD RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The MAX250CPD is a 2/2 full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 14-pin DIP package. This interface IC is designed for serial communication applications requiring bidirectional RS232 signal conversion. The MAX250CPD is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

MAX250CPD

Analog Devices Inc./Maxim IntegratedIn Stock: 5064MAX250CPD Datasheet

Current PartRFQ

MAX250CPD+

Analog Devices Inc./Maxim IntegratedIn Stock: 944MAX250CPD+ Datasheet

DirectRFQ

MAX251CPD+

Analog Devices Inc./Maxim IntegratedIn Stock: 3066MAX251CPD+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MAX250CPD is determined by strict equivalence across the following critical parameters:

• RS232 protocol compliance
• 2/2 driver/receiver configuration (2 drivers, 2 receivers)
• Full-duplex operation capability
• 600 mV receiver hysteresis specification
• 4.5V to 5.5V supply voltage range
• 0°C to 70°C operating temperature range
• 14-pin DIP package form factor (0.300", 7.62mm pitch)
• Through-hole mounting compatibility

The substitute parts identified—MAX250CPD+ and MAX251CPD+—maintain identical electrical and mechanical specifications to the original MAX250CPD, ensuring functional interchangeability in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

MAX250CPD+ is the direct substitute for the obsolete MAX250CPD. Both parts share identical part numbering conventions and electrical specifications. The MAX250CPD+ is currently in active production status and carries ROHS3 compliance certification, making it suitable for new designs and legacy system replacements where regulatory compliance is required.

MAX251CPD+ is a parametric equivalent offering identical electrical and mechanical performance. The base product number differs (MAX251 versus MAX250), but all critical interface parameters—protocol, driver/receiver count, duplex mode, hysteresis, voltage range, temperature range, and package form factor—are equivalent. MAX251CPD+ is also active production status with ROHS3 compliance.

Both substitute parts maintain unlimited moisture sensitivity level (MSL 1) and REACH unaffected status, consistent with the original MAX250CPD specifications.

Frequently Asked Questions (FAQ)

Q: Can MAX250CPD+ be used as a direct replacement for MAX250CPD in existing designs?

A: Yes. MAX250CPD+ is the direct substitute with identical electrical and mechanical specifications. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 compliant versus non-compliant).

Q: What is the difference between MAX250CPD+ and MAX251CPD+?

A: Both parts are parametric equivalents with identical RS232 transceiver specifications (2/2 configuration, full-duplex, 600 mV hysteresis, 4.5V–5.5V supply, 0°C–70°C operating range). The base product number differs (MAX250 versus MAX251), but electrical and mechanical parameters are equivalent. Both are active production and ROHS3 compliant.

Q: Are the package dimensions identical across all three parts?

A: Yes. All three parts use the 14-pin DIP package with 0.300" (7.62mm) pitch, suitable for through-hole PCB mounting. Pin configuration and mechanical footprint are identical.

Q: Can I use these substitutes in new designs?

A: Yes. MAX250CPD+ and MAX251CPD+ are both active production parts with ROHS3 compliance, making them suitable for new designs. The original MAX250CPD is obsolete and should not be specified for new applications.

Q: Are there any compliance differences between the substitute parts?

A: MAX250CPD+ and MAX251CPD+ are both ROHS3 compliant, while the original MAX250CPD is RoHS non-compliant. Both substitutes maintain REACH unaffected status and MSL 1 (unlimited) moisture sensitivity level.