SP3222ECA-L RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SP3222ECA-L is a 2/2 full-duplex RS232 transceiver manufactured by MaxLinear, Inc., housed in a 20-SSOP surface mount package. This device operates across a 3V to 5.5V supply range and supports data rates up to 235 Kbps with a receiver hysteresis of 300 mV. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, production continuity, and system maintenance.

Key Parameters

Parameter	SP3222ECA-L
Manufacturer	MaxLinear, Inc.
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	0°C ~ 70°C
Data Rate	235 Kbps
Receiver Hysteresis	300 mV
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the SP3222ECA-L is determined by the following critical parameters:

Protocol: RS232 (mandatory match)
Number of Drivers/Receivers: 2/2 (mandatory match)
Duplex: Full (mandatory match)
Package / Case: 20-SSOP (mandatory match)
Mounting Type: Surface Mount (mandatory match)
Voltage - Supply: 3V ~ 5.5V (mandatory match)

Substitute parts are grouped into two categories based on product status and operational temperature range:

Category A - Active Status with Extended Temperature Range: ADM3222ARSZ, ADM3222ARSZ-REEL, ADM3222ARSZ-REEL7, ICL3222EIAZ, ICL3222EIAZ-T. These parts offer active product status and extended operating temperature ranges (-40°C to 85°C), providing superior long-term availability and broader environmental performance.

Category B - Active Status with Standard Temperature Range: ICL3222ECAZ, ICL3222ECAZ-T, MAX3222CAP+, MAX3222CAP+T. These parts maintain active product status with standard operating temperature ranges (0°C to 70°C), matching the original part's thermal specifications.

Category C - Obsolete Status: MAX3222CDB. This part shares obsolete status with the original SP3222ECA-L and is included for reference only.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Package	Voltage Supply	Operating Temp	Data Rate	Receiver Hysteresis	Product Status	Packaging Type
SP3222ECA-L	MaxLinear, Inc.	RS232	2/2	20-SSOP	3V ~ 5.5V	0°C ~ 70°C	235 Kbps	300 mV	Obsolete	—
ADM3222ARSZ	Analog Devices Inc.	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	460 Kbps	400 mV	Active	Tube
ADM3222ARSZ-REEL	Analog Devices Inc.	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	460 Kbps	400 mV	Active	Cut Tape & Digi-Reel
ADM3222ARSZ-REEL7	Analog Devices Inc.	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	460 Kbps	400 mV	Active	Cut Tape & Digi-Reel
ICL3222ECAZ	Renesas Electronics Corporation	RS232	2/2	20-SSOP	3V ~ 5.5V	0°C ~ 70°C	250 Kbps	500 mV	Active	Tube
ICL3222ECAZ-T	Renesas Electronics Corporation	RS232	2/2	20-SSOP	3V ~ 5.5V	0°C ~ 70°C	250 Kbps	500 mV	Active	Tape & Reel
ICL3222EIAZ	Renesas Electronics Corporation	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	250 Kbps	500 mV	Active	Tube
ICL3222EIAZ-T	Renesas Electronics Corporation	RS232	2/2	20-SSOP	3V ~ 5.5V	-40°C ~ 85°C	250 Kbps	500 mV	Active	Tape & Reel
MAX3222CAP+	Analog Devices Inc./Maxim Integrated	RS232	2/2	20-SSOP	3V ~ 5.5V	0°C ~ 70°C	120 Kbps	300 mV	Active	Tube
MAX3222CAP+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	20-SSOP	3V ~ 5.5V	0°C ~ 70°C	120 Kbps	300 mV	Active	Cut Tape & Digi-Reel
MAX3222CDB	Texas Instruments	RS232	2/2	20-SSOP	3V ~ 5.5V	0°C ~ 70°C	250 Kbps	300 mV	Obsolete	Tube

Engineering Selection Recommendations

For applications requiring immediate production support and long-term component availability, the ADM3222ARSZ series (ADM3222ARSZ, ADM3222ARSZ-REEL, ADM3222ARSZ-REEL7) from Analog Devices Inc. is the primary recommendation. All three variants are ROHS3 compliant and carry active product status with unlimited moisture sensitivity level (MSL 1). The ADM3222ARSZ-REEL7 variant offers the highest inventory availability at 28,600 pieces. These parts support extended operating temperatures from -40°C to 85°C and deliver superior data rate performance at 460 Kbps.

For applications constrained to the original operating temperature range (0°C to 70°C), the ICL3222ECAZ and ICL3222ECAZ-T variants from Renesas Electronics Corporation provide active product status with ROHS3 compliance. The ICL3222EIAZ and ICL3222EIAZ-T variants extend the temperature range to -40°C to 85°C while maintaining the same electrical characteristics.

The MAX3222CAP+ and MAX3222CAP+T variants from Analog Devices Inc./Maxim Integrated are suitable for applications with lower data rate requirements (120 Kbps) and standard temperature ranges. Both variants are ROHS3 compliant with active product status.

The MAX3222CDB from Texas Instruments shares obsolete status with the original SP3222ECA-L and should be considered only when existing inventory is available and long-term supply is not a concern.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SP3222ECA-L with any of the listed substitute parts?

A: Direct replacement is possible only if the substitute part maintains identical electrical and mechanical specifications. All listed substitutes share the same protocol (RS232), driver/receiver configuration (2/2), package type (20-SSOP), supply voltage range (3V to 5.5V), and mounting type (surface mount). However, differences in data rate, receiver hysteresis, operating temperature range, and product status must be evaluated against your specific application requirements.

Q: What is the difference between ADM3222ARSZ, ADM3222ARSZ-REEL, and ADM3222ARSZ-REEL7?

A: These three part numbers represent the same device with different packaging configurations. ADM3222ARSZ is supplied in Tube packaging. ADM3222ARSZ-REEL and ADM3222ARSZ-REEL7 are both supplied in Cut Tape and Digi-Reel format, with ADM3222ARSZ-REEL7 offering significantly higher inventory availability (28,600 pieces versus 1,900 pieces). The electrical specifications are identical across all three variants.

Q: Why do some substitutes have higher data rates than the original SP3222ECA-L?

A: The ADM3222ARSZ series supports 460 Kbps compared to the SP3222ECA-L's 235 Kbps. Higher data rate capability does not prevent substitution; it indicates enhanced performance. Applications operating at or below 235 Kbps will function correctly with these higher-rated devices.

Q: What does "Product Status: Obsolete" mean for the SP3222ECA-L?

A: Obsolete status indicates that the manufacturer has discontinued production and support for this part. New inventory may be limited, and long-term availability cannot be guaranteed. Substitution with active-status parts ensures continued supply chain access and manufacturer technical support.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification. The original SP3222ECA-L does not specify RoHS status in the provided data.

Q: What is the significance of operating temperature range differences?

A: The SP3222ECA-L operates from 0°C to 70°C. Substitutes with extended ranges (-40°C to 85°C) provide broader environmental performance for applications in extreme temperature conditions. Substitutes with matching temperature ranges (0°C to 70°C) are functionally equivalent within the original specification envelope.

Q: Can I use MAX3222CAP+ as a substitute if my application requires 235 Kbps data rate?

A: The MAX3222CAP+ is rated for 120 Kbps maximum data rate, which is below the SP3222ECA-L's 235 Kbps specification. This part is not suitable for applications requiring the original part's data rate performance.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in Tube, Cut Tape & Digi-Reel, and Tape & Reel packaging formats. Selection depends on your procurement and assembly process requirements. Tube packaging is suitable for lower-volume applications, while reel formats support automated assembly and higher-volume production.

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