MAX3223IPW RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The MAX3223IPW is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments, housed in a 20-TSSOP surface mount package. This part operates across a 3V to 5.5V supply range with a 250kbps data rate and -40°C to 85°C temperature range. The MAX3223IPW is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. Substitute parts must maintain functional compatibility across electrical specifications, mechanical packaging, and protocol requirements.

Key Parameters

Parameter	MAX3223IPW
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	250kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	20-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution compatibility for the MAX3223IPW is determined by the following critical parameters:

Protocol: RS232 (mandatory match)
Number of Drivers/Receivers: 2/2 (mandatory match)
Duplex: Full (mandatory match)
Voltage Supply Range: 3V ~ 5.5V (mandatory match)
Operating Temperature Range: -40°C ~ 85°C (mandatory match)
Mounting Type: Surface Mount (mandatory match)
Package Type: 20-TSSOP or 20-SSOP (compatible package families)

Secondary parameters including receiver hysteresis, data rate, and MSL rating may vary within acceptable ranges while maintaining functional compatibility. Parts are grouped by package type (20-TSSOP vs. 20-SSOP) and product status (active vs. obsolete).

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Receiver Hysteresis	Voltage Supply	Operating Temp	Package	Product Status	Inventory
MAX3223IPW	Texas Instruments	RS232	2/2	250kbps	500 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Obsolete	5855 Pcs
MAX3223EIPWR	Texas Instruments	RS232	2/2	500kbps	500 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	32100 Pcs
MAX3223EEUP+	Analog Devices Inc./Maxim Integrated	RS232	2/2	120Kbps	300 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	2188 Pcs
MAX3223EEUP+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	120Kbps	300 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	5400 Pcs
MAX3225EEUP+	Analog Devices Inc./Maxim Integrated	RS232	2/2	1Mbps	500 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	77900 Pcs
SP3223EBEY-L/TR	MaxLinear, Inc.	RS232	2/2	250kbps	300 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	3321 Pcs
ICL3223EIVZ-T	Renesas Electronics Corporation	RS232	2/2	250kbps	500 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	1500 Pcs
ICL3223IAZ	Renesas Electronics Corporation	RS232	2/2	250kbps	300 mV	3V ~ 5.5V	-40°C ~ 85°C	20-SSOP	Active	1416 Pcs
ICL3223IAZ-T	Renesas Electronics Corporation	RS232	2/2	250kbps	300 mV	3V ~ 5.5V	-40°C ~ 85°C	20-SSOP	Active	2037 Pcs
ICL3223IVZ	Renesas Electronics Corporation	RS232	2/2	250kbps	300 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	3754 Pcs
ICL3223IVZ-T	Renesas Electronics Corporation	RS232	2/2	250kbps	300 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	985 Pcs

Engineering Selection Recommendations

All substitute parts listed maintain full electrical and mechanical compatibility with the MAX3223IPW across the mandatory parameters: RS232 protocol, 2/2 driver/receiver configuration, full-duplex operation, 3V to 5.5V supply voltage, and -40°C to 85°C operating temperature range.

For direct pin-compatible replacement in 20-TSSOP packages, select from MAX3223EIPWR, MAX3223EEUP+, MAX3223EEUP+T, MAX3225EEUP+, SP3223EBEY-L/TR, ICL3223EIVZ-T, ICL3223IVZ, or ICL3223IVZ-T. All are active products with current manufacturing status and ROHS3 compliance.

For applications requiring 20-SSOP package format, ICL3223IAZ and ICL3223IAZ-T are available as active alternatives. These parts maintain identical electrical specifications while accommodating different PCB layout requirements.

MAX3223EIPWR (Texas Instruments) offers the highest data rate at 500kbps with matching receiver hysteresis of 500 mV, providing direct manufacturer continuity. MAX3225EEUP+ supports 1Mbps data rate for higher-speed applications. Parts with 120Kbps data rates (MAX3223EEUP+, MAX3223EEUP+T) are suitable for lower-speed legacy systems.

All substitute parts carry ROHS3 compliance and EAR99 export classification matching the original part. Moisture sensitivity levels range from MSL 1 (unlimited) to MSL 3 (168 hours), with higher MSL ratings requiring appropriate storage and handling protocols.

Frequently Asked Questions (FAQ)

Q: Can MAX3223EIPWR directly replace MAX3223IPW?

A: Yes. MAX3223EIPWR maintains identical electrical specifications (RS232 protocol, 2/2 configuration, 3V-5.5V supply, -40°C to 85°C operation) and package format (20-TSSOP). The higher 500kbps data rate is backward compatible with 250kbps applications. MAX3223EIPWR is an active product from Texas Instruments with higher inventory availability.

Q: What is the difference between 20-TSSOP and 20-SSOP packages?

A: Both are 20-pin surface mount packages with identical electrical compatibility. The 20-TSSOP measures 0.173" width (4.40mm), while 20-SSOP measures 0.209" width (5.30mm). Package selection depends on PCB layout constraints. Pin assignments and electrical function remain identical between formats.

Q: Are parts with different receiver hysteresis values compatible?

A: Yes. The MAX3223IPW specifies 500 mV receiver hysteresis, while several substitutes offer 300 mV. Both values fall within RS232 specification tolerances and maintain functional compatibility. Lower hysteresis (300 mV) provides tighter noise margins; higher hysteresis (500 mV) offers greater noise immunity. Selection depends on system noise environment.

Q: Can I use MAX3225EEUP+ as a substitute?

A: Yes. MAX3225EEUP+ is fully compatible across all mandatory parameters and operates at 1Mbps, exceeding the 250kbps requirement. It is suitable for applications requiring higher data rates while maintaining backward compatibility with 250kbps systems.

Q: What does MSL rating mean for these parts?

A: Moisture Sensitivity Level (MSL) indicates storage and handling requirements. MSL 1 (unlimited) parts like MAX3223IPW and MAX3223EIPWR have no moisture exposure restrictions. MSL 3 (168 hours) parts like ICL3223 variants require baking before reflow if exposed to moisture for more than 168 hours. Verify storage conditions match your supply chain requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original MAX3223IPW specification. All are also EAR99 classified for export purposes.

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