SP3232ECY-L RS232 Transceiver: Equivalent & Substitute Parts

Part Overview

The SP3232ECY-L is a full-duplex RS232 transceiver manufactured by MaxLinear, Inc., designed for serial communication applications requiring 2 drivers and 2 receivers in a 16-TSSOP surface mount package. The device operates across a 3V to 5.5V supply voltage range with a maximum data rate of 235 Kbps and is rated for 0°C to 70°C operating temperature. This part is currently in active production status with RoHS compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when the original SP3232ECY-L becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when extended operating temperature ranges or higher data rates are needed for specific application requirements.

Key Parameters

Parameter	SP3232ECY-L
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	300 mV
Data Rate	235 Kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	16-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SP3232ECY-L is determined by the following critical parameters:

Protocol: RS232 (all substitutes must maintain RS232 compatibility)
Package / Case: 16-TSSOP form factor (physical and electrical compatibility)
Number of Drivers/Receivers: 2/2 configuration (functional equivalence)
Duplex: Full-duplex operation (communication capability)
Voltage - Supply: 3V ~ 5.5V range (power supply compatibility)
Mounting Type: Surface Mount (assembly process compatibility)

Substitute parts are grouped into two categories based on operating temperature range:

Category 1 - Standard Temperature Range (0°C ~ 70°C): ST3232ECTR and ICL3232CVZ/ICL3232CVZ-T maintain the original operating temperature specification, making them direct functional equivalents for applications with standard temperature requirements.

Category 2 - Extended Temperature Range (-40°C ~ 85°C): ADM202EARUZ-REEL, ADM202EARUZ-REEL7, ADM3202ARUZ, ADM3202ARUZ-REEL, ADM3202ARUZ-REEL7, ADM3232EARUZ, and ADM3232EARUZ-REEL7 provide extended operating temperature capability, suitable for industrial and automotive applications requiring wider temperature performance.

Parameter Comparison

Part Number	Manufacturer	Drivers/Receivers	Data Rate	Receiver Hysteresis	Voltage - Supply	Operating Temperature	Package	RoHS Status	Packaging Format
SP3232ECY-L	MaxLinear, Inc.	2/2	235 Kbps	300 mV	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	RoHS Compliant	Tube
ST3232ECTR	STMicroelectronics	2/2	250 Kbps	500 mV	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel®
ADM202EARUZ-REEL	Analog Devices Inc.	2/2	230 Kbps	650 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	ROHS3 Compliant	Tape & Reel (TR)
ADM202EARUZ-REEL7	Analog Devices Inc.	2/2	230 Kbps	650 mV	4.5V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel®
ADM3202ARUZ	Analog Devices Inc.	2/2	460 Kbps	400 mV	3V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	ROHS3 Compliant	Tube
ADM3202ARUZ-REEL	Analog Devices Inc.	2/2	460 Kbps	400 mV	3V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel®
ADM3202ARUZ-REEL7	Analog Devices Inc.	2/2	460 Kbps	400 mV	3V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel®
ADM3232EARUZ	Analog Devices Inc.	2/2	460 Kbps	500 mV	3V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	ROHS3 Compliant	Tube
ADM3232EARUZ-REEL7	Analog Devices Inc.	2/2	460 Kbps	500 mV	3V ~ 5.5V	-40°C ~ 85°C	16-TSSOP	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel®
ICL3232CVZ	Renesas Electronics Corporation	2/2	250 Kbps	300 mV	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	ROHS3 Compliant	Tube
ICL3232CVZ-T	Renesas Electronics Corporation	2/2	250 Kbps	300 mV	3V ~ 5.5V	0°C ~ 70°C	16-TSSOP	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

For Standard Temperature Applications (0°C ~ 70°C):

ST3232ECTR from STMicroelectronics and ICL3232CVZ/ICL3232CVZ-T from Renesas Electronics Corporation are functionally equivalent substitutes. Both maintain the original operating temperature range and 3V to 5.5V supply voltage specification. ST3232ECTR offers slightly higher data rate capability (250 Kbps vs. 235 Kbps) and is available in Cut Tape & Digi-Reel® packaging. ICL3232CVZ maintains identical receiver hysteresis (300 mV) to the original part and is available in both Tube and Cut Tape formats. All three options carry ROHS3 compliance certification.

For Extended Temperature Applications (-40°C ~ 85°C):

Analog Devices ADM3202 and ADM3232 series parts provide extended temperature operation. ADM3202ARUZ and ADM3202ARUZ-REEL variants support the full 3V to 5.5V supply range with 460 Kbps data rate capability. ADM3232EARUZ and ADM3232EARUZ-REEL7 offer identical supply voltage and data rate performance with 500 mV receiver hysteresis. ADM202EARUZ-REEL and ADM202EARUZ-REEL7 operate within a narrower 4.5V to 5.5V supply range and are suitable only for applications with fixed 5V power supplies.

All substitute parts maintain 16-TSSOP package compatibility, full-duplex RS232 operation, and 2/2 driver/receiver configuration. Selection should be based on required operating temperature range, supply voltage constraints, data rate requirements, and preferred packaging format for manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can ST3232ECTR replace SP3232ECY-L in a standard temperature application?

A: Yes. ST3232ECTR maintains the same 0°C to 70°C operating temperature range, 3V to 5.5V supply voltage, 2/2 driver/receiver configuration, and 16-TSSOP package. The higher data rate (250 Kbps vs. 235 Kbps) and increased receiver hysteresis (500 mV vs. 300 mV) do not prevent substitution in applications designed for the original part.

Q: What is the key difference between ADM3202 and ADM3232 series parts?

A: Both series provide identical 460 Kbps data rate and -40°C to 85°C extended temperature operation. The primary difference is receiver hysteresis: ADM3202 variants specify 400 mV while ADM3232 variants specify 500 mV. Selection depends on application noise immunity requirements.

Q: Why do some ADM202 parts specify 4.5V to 5.5V supply voltage instead of 3V to 5.5V?

A: ADM202EARUZ-REEL and ADM202EARUZ-REEL7 are designed for fixed 5V supply applications and do not support 3V operation. These parts are suitable only for applications with dedicated 5V power supplies. For 3V to 5.5V compatibility, select ADM3202 or ADM3232 series alternatives.

Q: Does packaging format affect electrical performance?

A: No. Tube, Cut Tape (CT) & Digi-Reel®, and Tape & Reel (TR) packaging formats are manufacturing and logistics variations only. Electrical specifications and performance remain identical across packaging options for the same base part number.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, meeting current environmental and hazardous substance restrictions. The original SP3232ECY-L carries RoHS Compliant status, which is superseded by ROHS3 certification on all substitute options.

Q: Can ICL3232CVZ replace SP3232ECY-L in high-speed applications?

A: ICL3232CVZ supports 250 Kbps data rate, which exceeds the original SP3232ECY-L specification of 235 Kbps. It maintains identical receiver hysteresis (300 mV) and operating temperature range (0°C to 70°C), making it suitable for applications requiring the original performance envelope.

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