SP3232EHCT-L Equivalent & Substitute Parts

Part Overview

The SP3232EHCT-L is a 2/2 full-duplex RS232 transceiver manufactured by MaxLinear, Inc., housed in a 16-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The part operates across a 3V to 5.5V supply range with a 460 kbps data rate capability and is suitable for applications requiring RS232 serial communication interfaces.

Key Parameters

Parameter	SP3232EHCT-L
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS232
Drivers/Receivers	2/2
Duplex	Full
Package/Case	16-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Voltage Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Data Rate	460 kbps
Receiver Hysteresis	300 mV
Product Status	Obsolete
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the SP3232EHCT-L is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Protocol: RS232
Drivers/Receivers Configuration: 2/2
Duplex Mode: Full
Package/Case: 16-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount
Voltage Supply Range: Must encompass or be compatible with 3V ~ 5.5V
Pin-to-pin compatibility within 16-SOIC package

Acceptable Variation Parameters:

Data Rate: Substitute must meet or exceed 460 kbps requirement
Receiver Hysteresis: Variations acceptable if within RS232 specification compliance
Operating Temperature: May extend beyond 0°C ~ 70°C range
Product Status: Active status preferred for long-term availability
MSL Rating: May differ based on supplier packaging

Substitute parts are grouped into two categories: direct equivalents from Renesas Electronics Corporation (ICL3232 series) and manufacturer-recommended alternatives from Analog Devices Inc. (ADM202 and ADM232 series).

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Duplex	Package	Voltage Supply	Operating Temp	Data Rate	Receiver Hysteresis	Product Status
SP3232EHCT-L	MaxLinear, Inc.	RS232	2/2	Full	16-SOIC	3V ~ 5.5V	0°C ~ 70°C	460 kbps	300 mV	Obsolete
ICL3232ECBZ	Renesas Electronics	RS232	2/2	Full	16-SOIC	3V ~ 5.5V	0°C ~ 70°C	250 kbps	500 mV	Active
ICL3232ECBZ-T	Renesas Electronics	RS232	2/2	Full	16-SOIC	3V ~ 5.5V	0°C ~ 70°C	250 kbps	500 mV	Active
ADM202EARWZ	Analog Devices Inc.	RS232	2/2	Full	16-SOIC	4.5V ~ 5.5V	-40°C ~ 85°C	230 kbps	650 mV	Active
ADM202EARWZ-REEL	Analog Devices Inc.	RS232	2/2	Full	16-SOIC	4.5V ~ 5.5V	-40°C ~ 85°C	230 kbps	650 mV	Active
ADM202JRWZ	Analog Devices Inc.	RS232	2/2	Full	16-SOIC	4.5V ~ 5.5V	0°C ~ 70°C	—	400 mV	Active
ADM202JRWZ-REEL	Analog Devices Inc.	RS232	2/2	Full	16-SOIC	4.5V ~ 5.5V	0°C ~ 70°C	—	400 mV	Active
ADM232AARWZ	Analog Devices Inc.	RS232	2/2	Full	16-SOIC	4.5V ~ 5.5V	-40°C ~ 85°C	200 kbps	400 mV	Active
ADM232AARWZ-REEL	Analog Devices Inc.	RS232	2/2	Full	16-SOIC	4.5V ~ 5.5V	-40°C ~ 85°C	200 kbps	400 mV	Active
ADM232LARZ	Analog Devices Inc.	RS232	2/2	Full	16-SOIC	4.5V ~ 5.5V	-40°C ~ 85°C	120 kbps	650 mV	Active
ADM232LARZ-REEL	Analog Devices Inc.	RS232	2/2	Full	16-SOIC	4.5V ~ 5.5V	-40°C ~ 85°C	120 kbps	650 mV	Active

Engineering Selection Recommendations

Renesas ICL3232 Series (Direct Equivalents)

The ICL3232ECBZ and ICL3232ECBZ-T represent the closest functional equivalents to the SP3232EHCT-L. Both maintain identical voltage supply range (3V ~ 5.5V), operating temperature (0°C ~ 70°C), and package configuration. These parts are ROHS3 compliant and REACH unaffected, meeting modern environmental standards. The primary difference is packaging format: ICL3232ECBZ is supplied in tube packaging, while ICL3232ECBZ-T is supplied in tape and reel format. Data rate is reduced to 250 kbps, which remains suitable for most RS232 applications. Both parts carry active product status, ensuring long-term availability and supply chain stability.

Analog Devices ADM202 Series (Extended Temperature Range)

The ADM202EARWZ, ADM202EARWZ-REEL, ADM202JRWZ, and ADM202JRWZ-REEL variants offer extended operating temperature ranges (-40°C to 85°C for E-grade; 0°C to 70°C for J-grade) compared to the original part. These parts require a minimum supply voltage of 4.5V, which may necessitate circuit design review if 3V operation is required. All ADM202 variants are ROHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity), providing superior reliability in storage and handling. Data rates range from 230 kbps to unspecified, meeting or exceeding typical RS232 requirements.

Analog Devices ADM232 Series (Low Data Rate Variants)

The ADM232AARWZ, ADM232AARWZ-REEL, ADM232LARZ, and ADM232LARZ-REEL parts provide alternative configurations with data rates of 200 kbps and 120 kbps respectively. These variants are suitable for applications where lower data rates are acceptable. All ADM232 parts maintain 4.5V ~ 5.5V supply range and extended temperature operation (-40°C to 85°C). ROHS3 compliance and MSL rating of 1 ensure compliance with current manufacturing standards.

Packaging Considerations

Tube packaging (ECBZ, EARWZ, JRWZ, AARWZ, LARZ) is suitable for lower-volume applications and manual assembly. Tape and reel packaging (ECBZ-T, EARWZ-REEL, JRWZ-REEL, AARWZ-REEL, LARZ-REEL) is optimized for automated pick-and-place assembly and higher-volume production.

Frequently Asked Questions (FAQ)

Q: Can ICL3232ECBZ be used as a direct replacement for SP3232EHCT-L?

A: Yes, with verification of application requirements. The ICL3232ECBZ maintains identical electrical specifications for voltage supply (3V ~ 5.5V), operating temperature (0°C ~ 70°C), package type (16-SOIC), and functional configuration (2/2 full-duplex RS232). Data rate is reduced from 460 kbps to 250 kbps, which is acceptable for standard RS232 serial communication. Both parts are pin-compatible within the 16-SOIC package.

Q: What is the key difference between Renesas and Analog Devices substitutes?

A: Renesas ICL3232 parts maintain the original 3V ~ 5.5V supply voltage range, making them suitable for low-voltage applications. Analog Devices ADM202 and ADM232 series require minimum 4.5V supply voltage but offer extended operating temperature ranges (-40°C to 85°C) and superior moisture sensitivity ratings (MSL 1 vs. MSL 3). Selection depends on specific application voltage and temperature requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification and REACH unaffected status, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging contains individual components in a plastic tube, suitable for manual assembly and lower-volume applications. Tape and reel packaging presents components on continuous carrier tape wound on reels, optimized for automated assembly equipment and higher-volume production. Electrical and functional specifications are identical between packaging formats of the same part number.

Q: Can ADM202 or ADM232 parts operate at 3V supply voltage?

A: No. Analog Devices ADM202 and ADM232 series specify a minimum supply voltage of 4.5V. If 3V operation is required, the Renesas ICL3232ECBZ or ICL3232ECBZ-T must be selected, as these maintain the original 3V ~ 5.5V supply range.

Q: Which substitute offers the best long-term availability?

A: All substitute parts carry active product status from their respective manufacturers. Renesas ICL3232 and Analog Devices ADM202/ADM232 series are established, widely-used RS232 transceiver families with strong market presence and supply chain support. Selection should be based on specific application requirements rather than availability concerns.

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