MAX3223CPWR RS232 Transceiver Interface IC Equivalent & Substitute Parts

Part Overview

The MAX3223CPWR is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments, housed in a 20-TSSOP surface mount package. This component operates across a 3V to 5.5V supply range with a 250kbps data rate and 500mV receiver hysteresis. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain compatibility across electrical specifications, mechanical packaging, and functional protocol requirements.

Key Parameters

Parameter	MAX3223CPWR
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Drivers/Receivers	2/2
Duplex	Full
Data Rate	250kbps
Voltage Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Receiver Hysteresis	500mV
Package/Case	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the MAX3223CPWR is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Protocol: RS232
Drivers/Receivers Configuration: 2/2
Duplex Mode: Full
Package/Case: 20-TSSOP (0.173", 4.40mm Width)
Mounting Type: Surface Mount
Voltage Supply Range: 3V ~ 5.5V (minimum overlap required)

Allowable Parameter Variations:

Data Rate: Equal to or greater than 250kbps
Receiver Hysteresis: 300mV to 500mV
Operating Temperature: Extended range acceptable (e.g., -40°C ~ 85°C)
Product Status: Active preferred over obsolete
Packaging Format: Cut Tape (CT), Digi-Reel, Tube, or Tape & Reel (TR)
MSL Rating: 1 or 3 acceptable
RoHS Compliance: ROHS3 or equivalent

Substitute parts are grouped by manufacturer and functional tier: MFR Recommended (direct equivalents with active status), Direct Manufacturer (compatible alternatives), and Upgrade (enhanced specifications with extended temperature range).

Parameter Comparison

Part Number	Manufacturer	Data Rate	Receiver Hysteresis	Operating Temp	Product Status	Packaging	Inventory
MAX3223CPWR	Texas Instruments	250kbps	500mV	0°C ~ 70°C	Obsolete	Cut Tape (CT)	3,200 Pcs
MAX3223EIPWR	Texas Instruments	500kbps	500mV	-40°C ~ 85°C	Active	Cut Tape (CT) & Digi-Reel	32,100 Pcs
ICL3223IVZ-T	Renesas Electronics	250kbps	300mV	-40°C ~ 85°C	Active	Tape & Reel (TR)	985 Pcs
MAX3223ECUP+	Analog Devices Inc./Maxim	250kbps	500mV	0°C ~ 70°C	Active	Tube	2,100 Pcs
MAX3224ECUP+	Analog Devices Inc./Maxim	250kbps	500mV	0°C ~ 70°C	Active	Tube	813 Pcs
MAX3225ECUP+	Analog Devices Inc./Maxim	1Mbps	500mV	0°C ~ 70°C	Active	Tube	2,000 Pcs
MAX3223EEUP+	Analog Devices Inc./Maxim	120Kbps	300mV	-40°C ~ 85°C	Active	Tube	2,188 Pcs
MAX3223EEUP+T	Analog Devices Inc./Maxim	120Kbps	300mV	-40°C ~ 85°C	Active	Cut Tape (CT) & Digi-Reel	5,400 Pcs
SP3223EBEY-L/TR	MaxLinear, Inc.	250kbps	300mV	-40°C ~ 85°C	Active	Tape & Reel (TR)	3,321 Pcs
ICL3223EIVZ	Renesas Electronics	250kbps	500mV	-40°C ~ 85°C	Active	Tube	1,978 Pcs
ICL3223EIVZ-T	Renesas Electronics	250kbps	500mV	-40°C ~ 85°C	Active	Tape & Reel (TR)	1,500 Pcs

Engineering Selection Recommendations

Primary Recommendation: MAX3223EIPWR This Texas Instruments part maintains manufacturer continuity while offering active product status, extended operating temperature range (-40°C ~ 85°C), and doubled data rate capability (500kbps). It is available in Cut Tape and Digi-Reel packaging with substantial inventory (32,100 units). ROHS3 compliance and MSL 1 rating match the original specification.

Secondary Recommendation: ICL3223EIVZ-T Renesas Electronics ICL3223EIVZ-T provides active status with identical 2/2 RS232 transceiver configuration, 250kbps data rate, and extended temperature range. Tape & Reel packaging supports high-volume production. MSL 3 rating (168 hours) requires controlled storage conditions. ROHS3 compliance confirmed.

Alternative for Extended Temperature Applications: SP3223EBEY-L/TR MaxLinear SP3223EBEY-L/TR delivers -40°C ~ 85°C operating range with 250kbps data rate and 300mV receiver hysteresis. Tape & Reel packaging and RoHS compliance support production requirements. Inventory availability (3,321 units) supports medium-volume applications.

High-Speed Alternative: MAX3225ECUP+ For applications requiring higher data rates, MAX3225ECUP+ operates at 1Mbps while maintaining all other electrical and mechanical compatibility parameters. Tube packaging and active status provide design flexibility.

Selection should prioritize active product status, compliance certifications (ROHS3), and packaging format alignment with production processes.

Frequently Asked Questions (FAQ)

Q: Can MAX3223EEUP+T replace MAX3223CPWR in existing designs? A: Yes. MAX3223EEUP+T maintains the 20-TSSOP package, 3V ~ 5.5V supply range, and 2/2 RS232 transceiver configuration. The 120Kbps data rate is lower than the original 250kbps specification, but this represents a conservative design margin. Extended temperature range (-40°C ~ 85°C) provides additional operational headroom. Cut Tape & Digi-Reel packaging supports production continuity.

Q: What is the difference between ICL3223EIVZ and ICL3223EIVZ-T? A: Both parts are functionally identical Renesas Electronics RS232 transceivers with 250kbps data rate and 500mV receiver hysteresis. The primary difference is packaging: ICL3223EIVZ is supplied in Tube format, while ICL3223EIVZ-T is supplied in Tape & Reel (TR) format. Selection depends on production assembly requirements and volume.

Q: Is MAX3225ECUP+ a direct substitute for MAX3223CPWR? A: MAX3225ECUP+ is mechanically and electrically compatible with identical package, supply voltage, and 2/2 RS232 configuration. The 1Mbps data rate exceeds the original 250kbps specification, providing enhanced performance capability. Tube packaging differs from the original Cut Tape format. This part is suitable for designs requiring higher communication speeds.

Q: What does MSL 3 (168 hours) mean for ICL3223EIVZ parts? A: MSL 3 indicates the component requires moisture control during storage and handling. The 168-hour specification means the part can be exposed to ambient conditions (30°C, 60% relative humidity) for a maximum of 168 hours before soldering. Proper storage in dry-pack conditions with desiccant is required. MSL 1 parts (MAX3223EIPWR, MAX3223ECUP+) have unlimited shelf life under standard conditions.

Q: Can I use MAX3223ECUP+ in production if my original design specified MAX3223CPWR? A: Yes. MAX3223ECUP+ is manufactured by Analog Devices Inc./Maxim Integrated and provides identical electrical specifications (250kbps, 500mV hysteresis, 3V ~ 5.5V supply) and 20-TSSOP packaging. The part is active with ROHS3 compliance. Tube packaging requires adjustment to assembly processes designed for Cut Tape format.

Q: Why does SP3223EBEY-L/TR have 300mV receiver hysteresis instead of 500mV? A: Receiver hysteresis is a design parameter that affects noise immunity and switching threshold characteristics. The 300mV specification in SP3223EBEY-L/TR is within acceptable substitution tolerance and may provide improved noise rejection in certain applications. Both 300mV and 500mV hysteresis values are compatible with standard RS232 signal levels and protocol requirements.

Q: What inventory considerations should guide part selection? A: MAX3223EIPWR offers the highest inventory availability (32,100 units), supporting large-scale production. MAX3223EEUP+T (5,400 units) and SP3223EBEY-L/TR (3,321 units) provide substantial stock for medium-volume applications. ICL3223IVZ-T (985 units) and MAX3224ECUP+ (813 units) are suitable for lower-volume or prototype applications. Inventory levels should be verified with suppliers for current availability.

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