MAX3248EEAI RS232 Transceiver - Equivalent & Substitute Parts

Part Overview

The MAX3248EEAI is a full-duplex RS232 transceiver with 5 drivers and 3 receivers, designed for serial communication applications requiring 3V to 5.5V supply operation. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement capability.

Key Parameters

Parameter	Specification
Manufacturer Part Number	MAX3248EEAI
Manufacturer	Analog Devices Inc./Maxim Integrated
Product Category	Interface - RS232 Transceiver
Type	Transceiver
Protocol	RS232
Drivers/Receivers Configuration	5/3 (5 Drivers, 3 Receivers)
Duplex Mode	Full
Data Rate	250 kbps
Supply Voltage Range	3V to 5.5V
Receiver Hysteresis	600 mV
Operating Temperature Range	-40°C to 85°C
Package Type	28-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the MAX3248EEAI is determined by strict equivalence across the following critical parameters:

Protocol Compatibility: RS232 full-duplex transceiver
Channel Configuration: 5 drivers and 3 receivers
Electrical Performance: 250 kbps data rate, 600 mV receiver hysteresis
Supply Voltage: 3V to 5.5V operation
Temperature Range: -40°C to 85°C
Package Specification: 28-SSOP form factor with identical pin pitch and dimensions
Mounting Technology: Surface mount compatibility

All identified substitute parts meet these criteria and are available in active production status, providing direct functional and mechanical replacement capability.

Parameter Comparison

Parameter	MAX3248EEAI	MAX3248EEAI+	MAX3238EEAI+	ICL3238EIAZ
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Renesas Electronics Corporation
Product Status	Obsolete	Active	Active	Active
Protocol	RS232	RS232	RS232	RS232
Drivers/Receivers	5/3	5/3	5/3	5/3
Duplex Mode	Full	Full	Full	Full
Data Rate	250 kbps	250 kbps	250 kbps	250 kbps
Supply Voltage	3V to 5.5V	3V to 5.5V	3V to 5.5V	3V to 5.5V
Receiver Hysteresis	600 mV	600 mV	600 mV	600 mV
Operating Temperature	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C
Package	28-SSOP	28-SSOP	28-SSOP	28-SSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)

Engineering Selection Recommendations

Primary Substitutes (Maxim Integrated):

MAX3248EEAI+ and MAX3238EEAI+ are direct functional equivalents manufactured by Analog Devices Inc./Maxim Integrated. Both parts are in active production status and maintain identical electrical and mechanical specifications. These parts offer ROHS3 compliance, addressing regulatory requirements not met by the obsolete MAX3248EEAI. MSL rating of 1 (Unlimited) provides superior moisture handling characteristics suitable for extended storage and handling cycles.

Alternative Substitute (Renesas Electronics):

ICL3238EIAZ from Renesas Electronics Corporation provides full parametric equivalence with identical channel configuration, data rate, and package specifications. This part is actively manufactured and ROHS3 compliant. The MSL rating of 3 (168 Hours) requires controlled storage conditions and shorter shelf life management compared to MSL 1 rated alternatives.

Selection Basis:

Component selection should prioritize active production status and regulatory compliance. All three substitute parts satisfy functional requirements. Maxim Integrated parts offer superior moisture sensitivity ratings. Renesas part selection is appropriate where supply chain diversification or existing Renesas component qualification is established.

Frequently Asked Questions (FAQ)

Q: Can MAX3248EEAI be directly replaced with MAX3248EEAI+ or MAX3238EEAI+?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, channel configuration (5/3), data rate (250 kbps), supply voltage range (3V to 5.5V), and 28-SSOP package. Pin-for-pin compatibility is maintained.

Q: What is the difference between MAX3248EEAI+ and MAX3238EEAI+?

A: Both parts are functionally identical RS232 transceivers with 5/3 channel configuration. The primary difference is the base product number designation (MAX3248 versus MAX3238). Electrical performance and package specifications are equivalent.

Q: Is ICL3238EIAZ a suitable replacement?

A: Yes. ICL3238EIAZ meets all parametric requirements for direct substitution. The primary consideration is MSL rating of 3 (168 Hours) versus MSL 1 (Unlimited) for Maxim parts, requiring stricter moisture control during storage and handling.

Q: Are there package or pinout differences between substitute parts?

A: No. All substitute parts use identical 28-SSOP surface mount packaging with 0.209" width and 5.30mm dimensions. Pinout and mechanical compatibility are maintained across all listed equivalents.

Q: What compliance advantages do substitute parts offer?

A: All active substitute parts (MAX3248EEAI+, MAX3238EEAI+, ICL3238EIAZ) are ROHS3 compliant, addressing environmental and regulatory requirements. The obsolete MAX3248EEAI does not meet current RoHS standards.

Q: How should MSL rating differences be considered?

A: MSL 1 (Unlimited) rated parts require no special moisture control. MSL 3 (168 Hours) rated parts must be stored in controlled humidity environments and used within specified timeframes after packaging opening. Maxim parts offer simplified supply chain handling.

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