SP3224ECY-L RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SP3224ECY-L is a 2/2 full-duplex RS232 transceiver manufactured by MaxLinear, Inc., housed in a 20-TSSOP surface mount package. This device operates across a 3V to 5.5V supply range with a 250kbps data rate and 500mV receiver hysteresis, designed for serial communication applications requiring bidirectional RS232 signal conversion. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing system support, redesigns, and new production runs.

Key Parameters

Parameter	SP3224ECY-L Value
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	250kbps
Voltage - Supply	3V ~ 5.5V
Receiver Hysteresis	500 mV
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the SP3224ECY-L is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Package / Case: 20-TSSOP (0.173", 4.40mm Width)
Mounting Type: Surface Mount
Voltage - Supply: 3V ~ 5.5V (minimum requirement)
Receiver Hysteresis: 500 mV
Data Rate: 250kbps (minimum requirement)

Substitute parts are grouped into two categories:

MFR Recommended Substitutes: Parts from Analog Devices Inc./Maxim Integrated that maintain identical electrical specifications and are in active production status. These include MAX13234EEUP+, MAX13234EEUP+T, MAX13235EEUP+, MAX13235EEUP+T, MAX3224ECUP+T, and MAX3225EUP/V+.

Parametric Equivalents: Parts that meet the core electrical and mechanical requirements but may have extended operating temperature ranges or higher data rates. These include ICL3222ECVZ from Renesas Electronics Corporation and MAX3223ECUP+ from Analog Devices Inc./Maxim Integrated.

Limited Compatibility Substitute: MAX3316ECUP+ operates within a narrower supply voltage range (2.25V ~ 3V) and lower data rate (460Kbps), making it suitable only for applications that do not require the full 3V ~ 5.5V supply range of the original part.

Parameter Comparison

Part Number	Manufacturer	Data Rate	Voltage - Supply	Operating Temperature	Receiver Hysteresis	Product Status	Packaging
SP3224ECY-L	MaxLinear, Inc.	250kbps	3V ~ 5.5V	0°C ~ 70°C	500 mV	Obsolete	-
MAX13234EEUP+	Analog Devices Inc./Maxim Integrated	250kbps	3V ~ 5.5V	-40°C ~ 85°C	500 mV	Active	Tube
MAX13234EEUP+T	Analog Devices Inc./Maxim Integrated	250kbps	3V ~ 5.5V	-40°C ~ 85°C	500 mV	Active	Tape & Reel (TR)
MAX13235EEUP+	Analog Devices Inc./Maxim Integrated	3Mbps	3V ~ 5.5V	-40°C ~ 85°C	500 mV	Active	Tube
MAX13235EEUP+T	Analog Devices Inc./Maxim Integrated	3Mbps	3V ~ 5.5V	-40°C ~ 85°C	500 mV	Active	Cut Tape (CT) & Digi-Reel®
MAX3224ECUP+T	Analog Devices Inc./Maxim Integrated	250kbps	3V ~ 5.5V	0°C ~ 70°C	500 mV	Active	Tape & Reel (TR)
MAX3225EUP/V+	Analog Devices Inc./Maxim Integrated	1Mbps	3V ~ 5.5V	-40°C ~ 85°C	500 mV	Active	Tube
MAX3316ECUP+	Analog Devices Inc./Maxim Integrated	460Kbps	2.25V ~ 3V	0°C ~ 70°C	300 mV	Active	Tube
ICL3222ECVZ	Renesas Electronics Corporation	250kbps	3V ~ 5.5V	0°C ~ 70°C	500 mV	Active	Tube
MAX3223ECUP+	Analog Devices Inc./Maxim Integrated	250kbps	3V ~ 5.5V	0°C ~ 70°C	500 mV	Active	Tube

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

MAX13234EEUP+ and MAX13234EEUP+T are the preferred substitutes. Both maintain identical electrical specifications to the SP3224ECY-L while offering extended operating temperature range (-40°C ~ 85°C) and active product status. The choice between tube (EEUP+) and tape & reel (EEUP+T) packaging depends on procurement and assembly requirements. Both are ROHS3 compliant and REACH unaffected.

MAX3224ECUP+T provides an exact operating temperature match (0°C ~ 70°C) to the original part with identical electrical parameters and active status. This part is suitable for applications with temperature constraints matching the original specification.

Secondary Substitutes (Extended Performance):

MAX13235EEUP+ and MAX13235EEUP+T offer higher data rate capability (3Mbps) while maintaining all other electrical parameters and supply voltage range. These parts are suitable for applications requiring higher bandwidth than the original 250kbps specification. Both are active and ROHS3 compliant.

MAX3225EUP/V+ provides intermediate data rate (1Mbps) with extended operating temperature range (-40°C ~ 85°C) and active status. This part bridges performance and temperature requirements for applications needing higher data rates than 250kbps.

Parametric Equivalent:

ICL3222ECVZ from Renesas Electronics Corporation matches all electrical specifications and operating temperature range of the original part. This part is active and ROHS3 compliant, offering an alternative source from a different manufacturer.

Limited Compatibility:

MAX3316ECUP+ operates within a narrower supply voltage range (2.25V ~ 3V) and does not support the full 3V ~ 5.5V range of the original part. This substitute is suitable only for applications operating exclusively within the 2.25V ~ 3V window.

Frequently Asked Questions (FAQ)

Q: Can MAX13235EEUP+ replace SP3224ECY-L in all applications?

A: MAX13235EEUP+ is electrically compatible with SP3224ECY-L for all core RS232 transceiver functions. The higher data rate (3Mbps vs. 250kbps) and extended operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C) make it suitable for applications requiring these enhanced specifications. No design changes are required for pin-compatible substitution in the 20-TSSOP package.

Q: What is the difference between MAX13234EEUP+ and MAX13234EEUP+T?

A: Both parts are electrically identical. The difference is packaging: EEUP+ is supplied in tube packaging, while EEUP+T is supplied in tape & reel format. Selection depends on procurement volume and assembly line requirements. Tape & reel packaging is typically preferred for high-volume automated assembly.

Q: Is ICL3222ECVZ a direct replacement for SP3224ECY-L?

A: ICL3222ECVZ from Renesas Electronics Corporation is a parametric equivalent with identical electrical specifications, operating temperature range, and package type. It is pin-compatible and functionally equivalent. The primary difference is manufacturer source, which may be relevant for supply chain diversification or regional availability.

Q: Why does MAX3316ECUP+ have different supply voltage specifications?

A: MAX3316ECUP+ is designed for low-voltage applications and operates within 2.25V ~ 3V supply range, compared to the SP3224ECY-L range of 3V ~ 5.5V. This part is not suitable as a direct replacement unless your application operates exclusively within the 2.25V ~ 3V window. Verify your system's supply voltage requirements before selecting this substitute.

Q: Can I use MAX3225EUP/V+ in place of SP3224ECY-L?

A: MAX3225EUP/V+ is compatible with SP3224ECY-L for all core RS232 transceiver functions. The higher data rate (1Mbps vs. 250kbps) and extended operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C) provide enhanced performance. No design changes are required for pin-compatible substitution in the 20-TSSOP package.

Q: What does ROHS3 compliance mean for these parts?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting the use of specific hazardous materials in electrical and electronic equipment. All active substitute parts listed are ROHS3 compliant, ensuring regulatory compliance for new designs and production.

Q: Are all substitute parts available in the same 20-TSSOP package?

A: Yes. All substitute parts listed are housed in the 20-TSSOP (0.173", 4.40mm Width) surface mount package, ensuring mechanical and electrical pin compatibility with the SP3224ECY-L. No PCB layout modifications are required for substitution.

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