SP3222EBCA-L RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SP3222EBCA-L is a 2/2 full-duplex RS232 transceiver manufactured by MaxLinear, Inc., housed in a 20-SSOP surface mount package. This interface IC operates across a 3V to 5.5V supply range with a 250kbps data rate and 300mV receiver hysteresis. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	SP3222EBCA-L
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS232
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	250kbps
Receiver Hysteresis	300mV
RoHS Status	RoHS Compliant
Product Status	Discontinued

Substitute Part Grouping Explanation

Substitution eligibility for the SP3222EBCA-L is determined by strict adherence to the following electrical and mechanical parameters:

Critical Compatibility Parameters:

Protocol: RS232
Drivers/Receivers: 2/2 configuration
Duplex: Full
Package/Case: 20-SSOP (0.209", 5.30mm Width)
Voltage Supply: 3V ~ 5.5V
Mounting Type: Surface Mount

Acceptable Variation Parameters:

Data Rate: Substitute parts may exceed 250kbps (backward compatible)
Receiver Hysteresis: Substitute parts may differ from 300mV (within RS232 specification tolerance)
Operating Temperature: Substitute parts may exceed 0°C ~ 70°C range (extended range acceptable)
Moisture Sensitivity Level: May vary based on packaging and storage requirements
Product Status: Active parts preferred over discontinued or obsolete

Substitute parts are grouped into three categories based on functional equivalence and availability status: Direct Substitutes (matching all critical parameters with active status), Upgrade Options (enhanced specifications with extended temperature range), and Manufacturer-Recommended Alternatives (functionally equivalent with different electrical characteristics within RS232 specification).

Parameter Comparison

Part Number	Manufacturer	Drivers/Receivers	Data Rate	Receiver Hysteresis	Operating Temperature	Package	Voltage Supply	Product Status	RoHS Status
SP3222EBCA-L	MaxLinear, Inc.	2/2	250kbps	300mV	0°C ~ 70°C	20-SSOP	3V ~ 5.5V	Discontinued	RoHS Compliant
MAX3222ECAP+	Analog Devices Inc./Maxim Integrated	2/2	1Mbps	500mV	0°C ~ 70°C	20-SSOP	3V ~ 5.5V	Active	ROHS3 Compliant
MAX3222ECAP+T	Analog Devices Inc./Maxim Integrated	2/2	1Mbps	500mV	0°C ~ 70°C	20-SSOP	3V ~ 5.5V	Active	ROHS3 Compliant
ST3222ECPR	STMicroelectronics	2/2	250kbps	500mV	0°C ~ 70°C	20-SSOP	3V ~ 5.5V	Active	ROHS3 Compliant
MAX3222EEAP+	Analog Devices Inc./Maxim Integrated	2/2	1Mbps	500mV	-40°C ~ 85°C	20-SSOP	3V ~ 5.5V	Active	ROHS3 Compliant
MAX3222EEAP+T	Analog Devices Inc./Maxim Integrated	2/2	1Mbps	500mV	-40°C ~ 85°C	20-SSOP	3V ~ 5.5V	Active	ROHS3 Compliant
MAX3222IDBR	Texas Instruments	2/2	250kbps	300mV	-40°C ~ 85°C	20-SSOP	3V ~ 5.5V	Obsolete	ROHS3 Compliant
ST3222EBPR	STMicroelectronics	2/2	250kbps	500mV	-40°C ~ 85°C	20-SSOP	3V ~ 5.5V	Active	ROHS3 Compliant
ADM3222ARSZ	Analog Devices Inc.	2/2	460Kbps	400mV	-40°C ~ 85°C	20-SSOP	3V ~ 5.5V	Active	ROHS3 Compliant
ADM3222ARSZ-REEL	Analog Devices Inc.	2/2	460Kbps	400mV	-40°C ~ 85°C	20-SSOP	3V ~ 5.5V	Active	ROHS3 Compliant
ADM3222ARSZ-REEL7	Analog Devices Inc.	2/2	460Kbps	400mV	-40°C ~ 85°C	20-SSOP	3V ~ 5.5V	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Substitutes (Preferred for Standard Applications):

ST3222ECPR is the primary direct substitute, maintaining identical 250kbps data rate and matching the original operating temperature range of 0°C to 70°C. This STMicroelectronics part is active and ROHS3 compliant, providing immediate availability with no functional compromise for applications operating within the original temperature specification.

MAX3222ECAP+ and MAX3222ECAP+T offer enhanced 1Mbps data rate capability while maintaining the 0°C to 70°C operating range. Both are active Analog Devices products with ROHS3 compliance. These parts are suitable for applications where higher data rate headroom is beneficial without requiring extended temperature operation.

Upgrade Options (Extended Temperature Applications):

MAX3222EEAP+ and MAX3222EEAP+T extend the operating temperature range to -40°C to 85°C while providing 1Mbps data rate. These Analog Devices parts are active and ROHS3 compliant, appropriate for industrial or automotive environments requiring wider temperature tolerance.

ST3222EBPR provides -40°C to 85°C operation at the original 250kbps data rate. This STMicroelectronics part maintains electrical compatibility while offering extended temperature capability and is active with ROHS3 compliance.

Manufacturer-Recommended Alternatives:

ADM3222ARSZ, ADM3222ARSZ-REEL, and ADM3222ARSZ-REEL7 are Analog Devices manufacturer-recommended alternatives with 460Kbps data rate and 400mV receiver hysteresis. All three variants are active, ROHS3 compliant, and operate across -40°C to 85°C. These parts provide intermediate data rate performance between the original 250kbps and the 1Mbps MAX3222 variants.

Parts to Avoid:

MAX3222IDBR is obsolete and should not be selected for new designs despite matching the original 250kbps data rate and 300mV hysteresis.

Frequently Asked Questions (FAQ)

Q: Can I use MAX3222ECAP+ as a direct replacement for SP3222EBCA-L?

A: Yes. MAX3222ECAP+ maintains all critical compatibility parameters: 2/2 RS232 transceiver configuration, full-duplex operation, 20-SSOP package, and 3V to 5.5V supply voltage. The enhanced 1Mbps data rate is backward compatible with applications designed for 250kbps operation. The part is active and ROHS3 compliant.

Q: What is the difference between MAX3222ECAP+ and MAX3222EEAP+?

A: Both are Analog Devices RS232 transceivers with identical 2/2 configuration, 1Mbps data rate, and 20-SSOP packaging. The primary difference is operating temperature range: MAX3222ECAP+ operates 0°C to 70°C, while MAX3222EEAP+ operates -40°C to 85°C. Select MAX3222EEAP+ for applications requiring extended temperature operation.

Q: Why do some substitute parts have different receiver hysteresis values?

A: Receiver hysteresis variation (300mV, 400mV, or 500mV) falls within RS232 specification tolerance and does not affect functional compatibility. All values ensure reliable signal detection across the RS232 voltage range. Selection should be based on application requirements and part availability.

Q: What is the difference between MAX3222ECAP+ and MAX3222ECAP+T packaging?

A: MAX3222ECAP+ is supplied in Tube packaging, while MAX3222ECAP+T is supplied in Tape & Reel (TR) format. Both parts are electrically identical. Select based on assembly process requirements: Tube for manual or small-batch assembly, Tape & Reel for automated high-volume production.

Q: Can I use ST3222ECPR instead of ST3222EBPR?

A: Both are STMicroelectronics RS232 transceivers with identical 2/2 configuration, 250kbps data rate, and 20-SSOP packaging. ST3222ECPR operates 0°C to 70°C, while ST3222EBPR operates -40°C to 85°C. Select based on your application's temperature requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, meeting current environmental and hazardous substance restrictions. The original SP3222EBCA-L was RoHS Compliant; all substitutes maintain or exceed this compliance level.

Q: What is the advantage of ADM3222ARSZ over MAX3222 variants?

A: ADM3222ARSZ provides 460Kbps data rate with 400mV receiver hysteresis and operates across -40°C to 85°C. This part offers a middle-ground option between the original 250kbps specification and the 1Mbps MAX3222 variants, suitable for applications requiring moderate data rate enhancement with extended temperature operation.

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