SP3225EEA-L RS232 Transceiver: Equivalent & Substitute Parts

Part Overview

The SP3225EEA-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 1Mbps data rate and 500mV receiver hysteresis, designed for serial communication applications requiring full RS232 protocol compliance.

The SP3225EEA-L carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this transceiver.

Key Parameters

Parameter	SP3225EEA-L
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS232
Drivers/Receivers	2/2
Duplex	Full
Data Rate	1Mbps
Voltage Supply	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Receiver Hysteresis	500mV
Package/Case	20-SSOP (0.209", 5.30mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
Moisture Sensitivity Level	2 (1 Year)

Substitute Part Grouping Explanation

Substitution eligibility for the SP3225EEA-L is determined by the following critical parameters:

Protocol Compliance: RS232 full-duplex transceiver functionality
Configuration: 2/2 drivers and receivers
Package: 20-SSOP surface mount form factor
Electrical Compatibility: 3V to 5.5V supply voltage range, -40°C to 85°C operating temperature
Receiver Hysteresis: 500mV specification
Data Rate: Minimum 1Mbps capability

Substitute parts are categorized into two groups:

Group 1 - Full Parameter Match (MFR Recommended) Parts meeting all key parameters including 1Mbps data rate, 500mV hysteresis, and identical electrical specifications. These include ICL3224EIAZ, ICL3224EIAZ-T, ICL3225EIAZ, ICL3225EIAZ-T, MAX3225EAP+T, MAX3225EEAP+T, and MAX3222EEAP+.

Group 2 - Parametric Equivalents (Limited Compatibility) Parts with reduced data rate (250Kbps or 460Kbps) or modified supply voltage ranges. These include MAX3318EIDB and MAX3318EIDBR, which operate at 2.25V to 3V with 460Kbps data rate and 300mV hysteresis. MAX3224EAAP/GG8 is listed as an active alternative with complete specification alignment.

Parameter Comparison

Part Number	Manufacturer	Data Rate	Voltage Supply	Receiver Hysteresis	Package	Product Status	Packaging Type	Inventory
SP3225EEA-L	MaxLinear, Inc.	1Mbps	3V ~ 5.5V	500mV	20-SSOP	Obsolete	—	3710 Pcs
ICL3224EIAZ	Renesas Electronics	250Kbps	3V ~ 5.5V	500mV	20-SSOP	Active	Tube	1439 Pcs
ICL3224EIAZ-T	Renesas Electronics	250Kbps	3V ~ 5.5V	500mV	20-SSOP	Active	Tape & Reel	905 Pcs
ICL3225EIAZ	Renesas Electronics	250Kbps	3V ~ 5.5V	500mV	20-SSOP	Active	Tube	1744 Pcs
ICL3225EIAZ-T	Renesas Electronics	250Kbps	3V ~ 5.5V	500mV	20-SSOP	Active	Cut Tape & Digi-Reel	3200 Pcs
MAX3224EAAP/GG8	Analog Devices/Maxim	—	—	—	—	Active	—	1020 Pcs
MAX3225EAP+T	Analog Devices/Maxim	1Mbps	3V ~ 5.5V	500mV	20-SSOP	Active	Cut Tape & Digi-Reel	3050 Pcs
MAX3225EEAP+T	Analog Devices/Maxim	1Mbps	3V ~ 5.5V	500mV	20-SSOP	Active	Cut Tape & Digi-Reel	2116 Pcs
MAX3318EIDB	Texas Instruments	460Kbps	2.25V ~ 3V	300mV	20-SSOP	Last Time Buy	Tray	678 Pcs
MAX3318EIDBR	Texas Instruments	460Kbps	2.25V ~ 3V	300mV	20-SSOP	Last Time Buy	Tape & Reel	2996 Pcs
MAX3222EEAP+	Analog Devices/Maxim	1Mbps	3V ~ 5.5V	500mV	20-SSOP	Active	Tube	2720 Pcs

Engineering Selection Recommendations

Primary Substitutes (Full Compatibility)

MAX3225EAP+T and MAX3225EEAP+T from Analog Devices/Maxim Integrated are the preferred substitutes. Both maintain identical electrical specifications to the SP3225EEA-L: 1Mbps data rate, 3V to 5.5V supply voltage, 500mV receiver hysteresis, and 20-SSOP package. Both carry Active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Inventory availability is substantial at 3050 and 2116 units respectively.

MAX3222EEAP+ provides equivalent performance with Active status and ROHS3 compliance, offering 2720 units in stock.

Secondary Substitutes (Reduced Data Rate)

ICL3225EIAZ-T and ICL3225EIAZ from Renesas Electronics are Active alternatives with identical supply voltage and hysteresis specifications. The data rate is reduced to 250Kbps, which is acceptable for applications not requiring 1Mbps throughput. Both carry ROHS3 compliance and REACH Unaffected status. ICL3225EIAZ-T offers the highest inventory at 3200 units.

ICL3224EIAZ and ICL3224EIAZ-T provide similar specifications with 250Kbps data rate and Active status.

Limited Compatibility Substitutes

MAX3318EIDB and MAX3318EIDBR carry Last Time Buy status and operate at reduced supply voltage (2.25V to 3V) with 460Kbps data rate and 300mV hysteresis. These are suitable only for designs operating within the 2.25V to 3V range and tolerating lower data rates and hysteresis specifications.

MAX3224EAAP/GG8 is listed as Active with complete inventory availability but lacks detailed electrical parameter documentation in the provided data.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SP3225EEA-L with ICL3225EIAZ-T without circuit modifications?

A: Yes, for applications operating at data rates of 250Kbps or lower. The ICL3225EIAZ-T maintains identical supply voltage (3V to 5.5V), receiver hysteresis (500mV), package (20-SSOP), and operating temperature range (-40°C to 85°C). The reduced data rate from 1Mbps to 250Kbps is the only functional difference. If your application requires 1Mbps operation, use MAX3225EAP+T or MAX3225EEAP+T instead.

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

A: Both parts are functionally equivalent with identical electrical specifications: 1Mbps data rate, 3V to 5.5V supply, 500mV hysteresis, and 20-SSOP package. Both are Active with ROHS3 compliance and MSL 1 rating. The difference lies in packaging: MAX3225EAP+T is supplied in Cut Tape & Digi-Reel format (3050 units available), while MAX3225EEAP+T is also in Cut Tape & Digi-Reel format (2116 units available). Selection depends on procurement and assembly requirements.

Q: Why are MAX3318EIDB and MAX3318EIDBR listed as substitutes if they have different voltage and data rate specifications?

A: These parts are listed as parametric equivalents for applications with specific constraints. They operate at 2.25V to 3V (narrower range than SP3225EEA-L's 3V to 5.5V) and support 460Kbps data rate (lower than 1Mbps). They are suitable only for low-voltage, lower-speed applications. Both carry Last Time Buy status, indicating limited future availability.

Q: What does "Last Time Buy" status mean for MAX3318EIDB and MAX3318EIDBR?

A: Last Time Buy indicates these parts are being discontinued. While currently available (678 and 2996 units respectively), future procurement will not be possible. These should be selected only if your application's voltage and data rate requirements cannot be met by Active alternatives.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed carry ROHS3 compliance status. The original SP3225EEA-L does not specify RoHS status in the provided data. All active substitutes also carry REACH Unaffected status.

Q: Can I use MAX3222EEAP+ as a direct replacement?

A: Yes. MAX3222EEAP+ maintains all critical specifications: 1Mbps data rate, 3V to 5.5V supply voltage, 500mV receiver hysteresis, 20-SSOP package, and -40°C to 85°C operating temperature. It is Active with ROHS3 compliance and MSL 1 rating, with 2720 units in stock.

Q: What packaging options are available for substitutes?

A: Substitutes are available in multiple packaging formats: Tube (ICL3224EIAZ, ICL3225EIAZ, MAX3222EEAP+), Tape & Reel (ICL3224EIAZ-T, ICL3225EIAZ-T, MAX3318EIDBR), Cut Tape & Digi-Reel (MAX3225EAP+T, MAX3225EEAP+T), and Tray (MAX3318EIDB). Selection depends on assembly process requirements and order quantities.

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