MAX3222EEAP RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The MAX3222EEAP is a 2/2 full-duplex RS232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 20-SSOP surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates across a 3V to 5.5V supply range with a 1Mbps data rate and 500mV receiver hysteresis, suitable for legacy RS232 communication interfaces in industrial and embedded applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX3222EEAP
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Interface
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Package / Case	20-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
Voltage - Supply	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Data Rate	1Mbps
Receiver Hysteresis	500 mV
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX3222EEAP is determined by the following critical parameters:

Protocol & Configuration: RS232, 2/2 drivers/receivers, full-duplex operation
Package Compatibility: 20-SSOP surface mount form factor (0.209", 5.30mm width)
Electrical Specifications: Supply voltage range 3V ~ 5.5V, operating temperature -40°C ~ 85°C
Data Rate: Minimum 1Mbps capability
Receiver Hysteresis: 500mV (primary specification) or compatible alternatives with 300-400mV acceptable within RS232 tolerance margins

Substitute parts are grouped into three categories:

Parametric Equivalents (MAX3222EEAP+, MAX3225EAAP+, MAX3225EAP+, MAX3225EEAP+): Identical electrical specifications with active product status and improved RoHS compliance
Direct Substitutes (SN65C3222EDB, SN65C3222EDBR, SP3222EBEA-L/TR, ST3222EBPR): Alternative manufacturer implementations meeting core RS232 2/2 transceiver requirements with compatible packaging
Manufacturer Recommended (ADM3222ARSZ, ADM3222ARSZ-REEL): Analog Devices alternatives with enhanced specifications and active production status

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Package	Supply Voltage	Operating Temp	Data Rate	Receiver Hysteresis	Product Status	RoHS Status
MAX3222EEAP	Analog Devices/Maxim	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	1Mbps	500 mV	Obsolete	Non-compliant
MAX3222EEAP+	Analog Devices/Maxim	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	1Mbps	500 mV	Active	ROHS3 Compliant
MAX3225EAAP+	Analog Devices/Maxim	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	1Mbps	500 mV	Active	ROHS3 Compliant
MAX3225EAP+	Analog Devices/Maxim	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	1Mbps	500 mV	Active	ROHS3 Compliant
MAX3225EEAP+	Analog Devices/Maxim	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	1Mbps	500 mV	Active	ROHS3 Compliant
SN65C3222EDB	Texas Instruments	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	1Mbps	300 mV	Last Time Buy	ROHS3 Compliant
SN65C3222EDBR	Texas Instruments	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	1Mbps	300 mV	Last Time Buy	ROHS3 Compliant
SP3222EBEA-L/TR	MaxLinear, Inc.	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	250kbps	300 mV	Active	RoHS Compliant
ST3222EBPR	STMicroelectronics	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	250kbps	500 mV	Active	ROHS3 Compliant
ADM3222ARSZ	Analog Devices Inc.	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	460Kbps	400 mV	Active	ROHS3 Compliant
ADM3222ARSZ-REEL	Analog Devices Inc.	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	460Kbps	400 mV	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: MAX3222EEAP+ or MAX3225EAP+ for direct replacement. Both parts maintain identical electrical specifications to the original MAX3222EEAP while offering active product status and ROHS3 compliance. These parts are sourced from the same manufacturer (Analog Devices/Maxim Integrated) and provide the highest compatibility assurance.

Alternative from Same Manufacturer: ADM3222ARSZ or ADM3222ARSZ-REEL. These Analog Devices parts are actively produced with enhanced specifications (460Kbps data rate, 400mV receiver hysteresis) and full ROHS3 compliance. The increased data rate provides performance headroom for legacy RS232 applications.

Cross-Manufacturer Alternatives: SN65C3222EDB/EDBR (Texas Instruments) and ST3222EBPR (STMicroelectronics) are functionally equivalent with identical 2/2 RS232 configuration and 20-SSOP packaging. Both manufacturers' parts are ROHS3 compliant and actively supported. The Texas Instruments parts are in Last Time Buy status; STMicroelectronics maintains active production.

Limited Compatibility: SP3222EBEA-L/TR (MaxLinear) meets all core requirements but operates at reduced data rate (250kbps versus 1Mbps). This part is suitable only for applications where the lower data rate does not impact system performance.

Frequently Asked Questions (FAQ)

Q: Can MAX3222EEAP be directly replaced with MAX3222EEAP+?

A: Yes. The MAX3222EEAP+ is a direct parametric equivalent with identical electrical specifications (2/2 RS232, 1Mbps, 500mV hysteresis, 20-SSOP package). The primary difference is product status (Active versus Obsolete) and RoHS compliance (ROHS3 Compliant versus non-compliant). Pin-for-pin compatibility is guaranteed.

Q: What is the difference between MAX3225EAP+ and MAX3225EEAP+?

A: Both parts are parametric equivalents to MAX3222EEAP with identical electrical specifications and 20-SSOP packaging. The designation difference reflects internal Maxim product line variants. Both are ROHS3 compliant and actively produced. Selection between them depends on availability and packaging preference (Tube packaging for both).

Q: Are Texas Instruments SN65C3222 parts compatible with MAX3222EEAP?

A: Yes, with one specification variance. SN65C3222EDB and SN65C3222EDBR maintain 2/2 RS232 configuration, 1Mbps data rate, and 20-SSOP packaging. The receiver hysteresis is 300mV (versus 500mV on MAX3222EEAP), which remains within RS232 standard tolerance. Both parts are ROHS3 compliant. Note: Texas Instruments has designated these parts as Last Time Buy.

Q: Why is SP3222EBEA-L/TR listed as a substitute if it has lower data rate?

A: SP3222EBEA-L/TR meets all core substitution criteria (2/2 RS232, 20-SSOP, 3V-5.5V supply, -40°C to 85°C operation) and is actively produced by MaxLinear. The 250kbps data rate is lower than MAX3222EEAP's 1Mbps specification. This part is suitable only for applications where the reduced data rate does not create system constraints.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: Tube (MAX3222EEAP+, MAX3225 series, ADM3222ARSZ), Tape & Reel (SN65C3222EDBR, SP3222EBEA-L/TR, ADM3222ARSZ-REEL), and Cut Tape with Digi-Reel (ST3222EBPR). Selection depends on production volume and assembly requirements.

Q: Is ADM3222ARSZ recommended over MAX3222EEAP+ for new designs?

A: ADM3222ARSZ is manufacturer-recommended by Analog Devices with enhanced specifications (460Kbps data rate, 400mV receiver hysteresis) and active production status. For new designs, ADM3222ARSZ provides superior performance margin and long-term supply assurance. For legacy system maintenance requiring exact specification match, MAX3222EEAP+ is the appropriate choice.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts are RoHS compliant (ROHS3 or RoHS Compliant designation). The original MAX3222EEAP is RoHS non-compliant. This compliance improvement is a key advantage of substitution for new production runs or updated designs.

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