SP3225ECA-L RS232 Transceiver: Equivalent & Substitute Parts

Part Overview

The SP3225ECA-L is a 2/2 full-duplex RS232 transceiver manufactured by MaxLinear, Inc., housed in a 20-SSOP surface mount package. This component operates across a 3V to 5.5V supply range with a 1Mbps data rate and 500mV receiver hysteresis. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.

Key Parameters

Parameter	SP3225ECA-L Value
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	1Mbps
Voltage Supply Range	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Receiver Hysteresis	500 mV
Package / Case	20-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	2 (1 Year)

Substitute Part Grouping Explanation

Substitution for the SP3225ECA-L is determined by the following critical parameters:

RS232 protocol compliance
2/2 driver/receiver configuration
Full-duplex operation
20-SSOP package footprint and pinout compatibility
Voltage supply range: 3V ~ 5.5V
Receiver hysteresis: 500 mV
Operating temperature range: 0°C ~ 70°C (minimum requirement)
Data rate capability: minimum 1Mbps

Substitute parts are grouped into two categories:

MFR Recommended Substitutes: Parts meeting all critical parameters with active product status and full compliance certifications.

Parametric Equivalents: Parts meeting core electrical and mechanical parameters with minor variations in data rate or temperature range, suitable for applications where the original specifications are not fully required.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Voltage Supply	Operating Temp	Receiver Hysteresis	Package	Product Status	Packaging Type
SP3225ECA-L	MaxLinear, Inc.	RS232	2/2	1Mbps	3V ~ 5.5V	0°C ~ 70°C	500 mV	20-SSOP	Obsolete	Tube
ICL3224EIAZ	Renesas Electronics	RS232	2/2	250kbps	3V ~ 5.5V	-40°C ~ 85°C	500 mV	20-SSOP	Active	Tube
ICL3224EIAZ-T	Renesas Electronics	RS232	2/2	250kbps	3V ~ 5.5V	-40°C ~ 85°C	500 mV	20-SSOP	Active	Tape & Reel (TR)
ICL3225ECAZ	Renesas Electronics	RS232	2/2	250kbps	3V ~ 5.5V	0°C ~ 70°C	500 mV	20-SSOP	Active	Tube
ICL3225ECAZ-T	Renesas Electronics	RS232	2/2	250kbps	3V ~ 5.5V	0°C ~ 70°C	500 mV	20-SSOP	Active	Cut Tape (CT) & Digi-Reel®
MAX3224EAAP/GG8	Analog Devices Inc./Maxim Integrated	RS232	2/2	Not specified	Not specified	Not specified	Not specified	Not specified	Active	Not specified
MAX3225CAP+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	1Mbps	3V ~ 5.5V	0°C ~ 70°C	500 mV	20-SSOP	Active	Tape & Reel (TR)
MAX3225ECAP+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	1Mbps	3V ~ 5.5V	0°C ~ 70°C	500 mV	20-SSOP	Active	Tape & Reel (TR)
MAX3318ECDBR	Texas Instruments	RS232	2/2	460Kbps	2.25V ~ 3V	0°C ~ 70°C	300 mV	20-SSOP	Last Time Buy	Tape & Reel (TR)
MAX3222ECAP+	Analog Devices Inc./Maxim Integrated	RS232	2/2	1Mbps	3V ~ 5.5V	0°C ~ 70°C	500 mV	20-SSOP	Active	Tube
MAX3225CAP+	Analog Devices Inc./Maxim Integrated	RS232	2/2	1Mbps	3V ~ 5.5V	0°C ~ 70°C	500 mV	20-SSOP	Active	Tube

Engineering Selection Recommendations

Primary Substitutes (Full Compatibility):

MAX3225ECAP+T and MAX3225CAP+T from Analog Devices Inc./Maxim Integrated provide direct electrical and mechanical equivalence to the SP3225ECA-L. Both maintain 1Mbps data rate, 500mV receiver hysteresis, 3V to 5.5V supply range, and 0°C to 70°C operating temperature. These parts carry active product status and ROHS3 compliance with unlimited moisture sensitivity rating (MSL 1).

Secondary Substitutes (Parametric Equivalence):

ICL3225ECAZ and ICL3225ECAZ-T from Renesas Electronics Corporation match the operating temperature range (0°C ~ 70°C) and core electrical parameters but operate at 250kbps data rate. These parts are suitable for applications where the full 1Mbps capability is not required. Both carry active product status and ROHS3 compliance.

ICL3224EIAZ and ICL3224EIAZ-T from Renesas Electronics Corporation extend the operating temperature range to -40°C ~ 85°C but maintain 250kbps data rate. These are appropriate for extended temperature applications.

Limited Substitutes:

MAX3318ECDBR from Texas Instruments carries Last Time Buy status and operates within a narrower voltage range (2.25V ~ 3V) with reduced data rate (460Kbps) and lower receiver hysteresis (300mV). This part is not recommended for new designs.

MAX3222ECAP+ and MAX3225CAP+ provide parametric equivalence with active status and full compliance but differ in packaging type (Tube vs. Tape & Reel).

Frequently Asked Questions (FAQ)

Q: Can ICL3224EIAZ replace SP3225ECA-L in existing designs?

A: ICL3224EIAZ is mechanically and electrically compatible in the 20-SSOP package with matching 2/2 RS232 configuration and 500mV hysteresis. However, the data rate is reduced to 250kbps compared to the original 1Mbps. Substitution is valid only if the application does not require the full 1Mbps bandwidth.

Q: What is the difference between ICL3225ECAZ and ICL3225ECAZ-T?

A: Both parts are electrically identical. ICL3225ECAZ is supplied in Tube packaging, while ICL3225ECAZ-T is supplied in Cut Tape (CT) & Digi-Reel® format. Selection depends on assembly process requirements and volume.

Q: Why is MAX3318ECDBR not recommended as a primary substitute?

A: MAX3318ECDBR operates within a narrower voltage supply range (2.25V ~ 3V) compared to the SP3225ECA-L (3V ~ 5.5V), has a lower data rate (460Kbps), and carries Last Time Buy status. It is not suitable for new designs requiring the original specifications.

Q: Are MAX3225ECAP+T and MAX3225CAP+T interchangeable?

A: Both parts are electrically identical with matching 1Mbps data rate, 500mV hysteresis, and 3V to 5.5V supply range. The difference is packaging: MAX3225ECAP+T is supplied in Tape & Reel (TR), while MAX3225CAP+ is supplied in Tube. Selection depends on assembly process and volume requirements.

Q: What compliance certifications apply to substitute parts?

A: All active substitute parts listed carry ROHS3 compliance and REACH Unaffected status. Moisture sensitivity levels vary: Analog Devices/Maxim parts carry MSL 1 (Unlimited), while Renesas parts carry MSL 2 (1 Year). Verify MSL requirements for your storage and assembly conditions.

Q: Can MAX3222ECAP+ be used instead of MAX3225ECAP+?

A: MAX3222ECAP+ maintains the same electrical specifications (1Mbps, 500mV hysteresis, 3V ~ 5.5V, 0°C ~ 70°C) and 20-SSOP package. Substitution is valid based on parametric equivalence, though MAX3225 variants are preferred for direct replacement.

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