MAX239CNG Equivalent & Substitute Parts

Part Overview

The MAX239CNG is a full-duplex RS232 transceiver IC manufactured by Analog Devices Inc./Maxim Integrated, configured with 3 drivers and 5 receivers in a 24-pin DIP package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance, redesigns, and production continuity. The part operates across supply voltages of 5V and 7.5V to 13.2V with a maximum data rate of 120 Kbps and receiver hysteresis of 500 mV.

Substiute Parts

MAX239CNG

Analog Devices Inc./Maxim IntegratedIn Stock: 3807MAX239CNG Datasheet

Current PartRFQ

MAX239CNG+

Analog Devices Inc./Maxim IntegratedIn Stock: 2209MAX239CNG+ Datasheet

Parametric EquivalentRFQ

HIN239CPZ

Renesas Electronics CorporationIn Stock: 1382HIN239CPZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX239CNG is determined by strict parametric matching across the following critical criteria:

Protocol and Configuration: All substitute parts must implement RS232 protocol with identical 3 driver and 5 receiver configuration to ensure functional compatibility with existing circuit designs.

Electrical Performance: Supply voltage range (5V, 7.5V ~ 13.2V), data rate (120 Kbps), and receiver hysteresis (500 mV) must match exactly to maintain signal integrity and timing characteristics.

Physical Form Factor: Package type (24-DIP), pin count, and through-hole mounting requirement must be identical to allow direct board-level substitution without layout modifications.

Operating Environment: Temperature range (0°C ~ 70°C) must be met or exceeded by the substitute part.

The identified substitute parts—MAX239CNG+ and HIN239CPZ—satisfy all these parametric requirements and are therefore qualified as direct equivalents for the obsolete MAX239CNG.

Parameter Comparison

Engineering Selection Recommendations

For new designs and production continuity, MAX239CNG+ is the primary substitute. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

HIN239CPZ (Renesas Electronics Corporation) provides an alternative equivalent with identical parametric performance and ROHS3 compliance. However, this part carries obsolete product status, limiting its suitability for long-term applications despite current inventory availability.

The original MAX239CNG remains non-compliant with RoHS regulations. Designs requiring regulatory compliance must transition to either MAX239CNG+ or HIN239CPZ.

Frequently Asked Questions (FAQ)

Q: Can MAX239CNG+ be used as a direct replacement for MAX239CNG?

A: Yes. MAX239CNG+ is parametrically identical to MAX239CNG across all electrical specifications, pin configuration, and package form factor. The primary difference is product status (active vs. obsolete) and RoHS compliance level.

Q: What is the difference between MAX239CNG and MAX239CNG+?

A: Both parts share identical RS232 transceiver functionality, 3/5 driver/receiver configuration, and 24-DIP package. MAX239CNG+ is the active production variant with ROHS3 compliance, while MAX239CNG is obsolete and RoHS non-compliant.

Q: Is HIN239CPZ compatible with MAX239CNG?

A: Yes. HIN239CPZ meets all parametric requirements for substitution, including RS232 protocol, 3/5 configuration, 120 Kbps data rate, and 24-DIP package. However, HIN239CPZ carries obsolete product status.

Q: Does package type affect substitution eligibility?

A: Yes. All substitute parts must use the 24-DIP (0.300", 7.62mm) through-hole package to ensure board-level compatibility without layout modifications.

Q: Are there voltage or temperature derating considerations for substitutes?

A: No. All qualified substitutes operate within the specified voltage range (5V, 7.5V ~ 13.2V) and temperature range (0°C ~ 70°C) without derating requirements.

Q: Which substitute part should be selected for new designs?

A: MAX239CNG+ is recommended for new designs due to active product status and ROHS3 compliance, ensuring long-term supply chain stability and regulatory compliance.