SN65C3222PW RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SN65C3222PW is a full-duplex RS232 transceiver manufactured by Texas Instruments, featuring 2 drivers and 2 receivers in a 20-TSSOP surface mount package. This device operates across a 3V to 5.5V supply range with a 1Mbps data rate and is compliant with ROHS3 standards. The part is currently in Last Time Buy status, making equivalent and substitute parts essential for ongoing design support and procurement planning.

Key Parameters

Parameter	Value
Manufacturer Part Number	SN65C3222PW
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	1Mbps
Voltage Supply Range	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Receiver Hysteresis	300 mV
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution compatibility for the SN65C3222PW is determined by the following critical parameters:

Package / Case: All substitutes must use 20-TSSOP (0.173", 4.40mm Width) for PCB layout compatibility
Protocol & Configuration: RS232 full-duplex transceiver with 2 drivers and 2 receivers
Voltage Supply Range: 3V ~ 5.5V operation
Mounting Type: Surface mount only
Data Rate: Minimum 1Mbps capability
Operating Temperature Range: -40°C ~ 85°C support
Receiver Hysteresis: 300 mV or 500 mV acceptable
Compliance: ROHS3 compliant

Substitute parts are grouped into two categories based on operational temperature range and data rate specifications:

Group 1 - Full Industrial Range (-40°C ~ 85°C, 1Mbps): MAX3222EEUP+T, SP3222EUEY-L/TR, and SP3222EBEY-L/TR provide direct functional equivalence with the SN65C3222PW across the full industrial temperature range and 1Mbps data rate.

Group 2 - Commercial Range (0°C ~ 70°C) or Reduced Data Rate: MAX3222ECUP+, MAX3222ECUP+T, ICL3222EIVZ, ICL3222EIVZ-T, MAX3222EEUP/V+, and SP3222ECY-L/TR operate within commercial temperature ranges or at reduced data rates (250kbps or 235kbps), suitable for applications not requiring full industrial temperature specifications.

Parameter Comparison

Part Number	Manufacturer	Data Rate	Operating Temp	Receiver Hysteresis	Packaging	Product Status	Inventory
SN65C3222PW	Texas Instruments	1Mbps	-40°C ~ 85°C	300 mV	Tube	Last Time Buy	960 Pcs
MAX3222EEUP+T	Analog Devices Inc./Maxim Integrated	1Mbps	-40°C ~ 85°C	500 mV	Cut Tape & Digi-Reel	Active	45400 Pcs
MAX3222EEUP+	Analog Devices Inc./Maxim Integrated	1Mbps	-40°C ~ 85°C	500 mV	Tube	Active	2987 Pcs
MAX3222EEUP/V+	Analog Devices Inc./Maxim Integrated	250kbps	-40°C ~ 85°C	500 mV	Tube	Active	774 Pcs
SP3222EUEY-L/TR	MaxLinear, Inc.	1Mbps	-40°C ~ 85°C	300 mV	Tape & Reel	Active	4125 Pcs
SP3222EBEY-L/TR	MaxLinear, Inc.	250kbps	-40°C ~ 85°C	300 mV	Not Specified	Active	782 Pcs
SP3222ECY-L/TR	MaxLinear, Inc.	235kbps	0°C ~ 70°C	300 mV	Tape & Reel	Active	2170 Pcs
ICL3222EIVZ	Renesas Electronics Corporation	250kbps	-40°C ~ 85°C	500 mV	Tube	Active	1541 Pcs
ICL3222EIVZ-T	Renesas Electronics Corporation	250kbps	-40°C ~ 85°C	500 mV	Cut Tape & Digi-Reel	Active	6050 Pcs
MAX3222ECUP+	Analog Devices Inc./Maxim Integrated	1Mbps	0°C ~ 70°C	500 mV	Tube	Active	22335 Pcs
MAX3222ECUP+T	Analog Devices Inc./Maxim Integrated	1Mbps	0°C ~ 70°C	500 mV	Tape & Reel	Active	3120 Pcs

Engineering Selection Recommendations

For Direct Replacement (Full Industrial Temperature, 1Mbps)

MAX3222EEUP+T and SP3222EUEY-L/TR are the primary substitutes for applications requiring the full -40°C to 85°C operating range with 1Mbps data rate. Both parts maintain identical electrical specifications to the SN65C3222PW with ROHS3 compliance and unlimited moisture sensitivity. MAX3222EEUP+T offers the highest inventory availability (45400 Pcs) in Cut Tape & Digi-Reel packaging, while SP3222EUEY-L/TR provides equivalent performance in Tape & Reel format with 4125 Pcs in stock.

For Commercial Temperature Applications (0°C ~ 70°C)

MAX3222ECUP+ and MAX3222ECUP+T are suitable for designs operating within commercial temperature ranges. These parts maintain 1Mbps data rate capability with ROHS3 compliance. MAX3222ECUP+ provides 22335 Pcs in Tube packaging, representing the highest inventory level across all substitutes.

For Reduced Data Rate Applications (250kbps or Lower)

ICL3222EIVZ, ICL3222EIVZ-T, MAX3222EEUP/V+, SP3222EBEY-L/TR, and SP3222ECY-L/TR are suitable when application requirements do not exceed 250kbps or 235kbps data rates. These parts maintain full industrial temperature support (except SP3222ECY-L/TR) with ROHS3 compliance. ICL3222EIVZ-T offers the highest inventory (6050 Pcs) in this category.

Packaging Considerations

Tube packaging is available from MAX3222EEUP+, MAX3222ECUP+, ICL3222EIVZ, and MAX3222EEUP/V+. Cut Tape & Digi-Reel packaging is available from MAX3222EEUP+T and ICL3222EIVZ-T. Tape & Reel packaging is available from MAX3222ECUP+T, SP3222EUEY-L/TR, SP3222EBEY-L/TR, and SP3222ECY-L/TR.

Frequently Asked Questions (FAQ)

Q: Can MAX3222EEUP+T directly replace SN65C3222PW in all applications?

A: MAX3222EEUP+T is functionally equivalent for applications requiring 1Mbps data rate and -40°C to 85°C operation. The primary difference is receiver hysteresis (500 mV vs. 300 mV on the SN65C3222PW). Both parts use identical 20-TSSOP packaging, supply voltage range, and full-duplex 2/2 transceiver configuration. Packaging format differs (Cut Tape & Digi-Reel vs. Tube).

Q: What is the impact of different receiver hysteresis values?

A: Receiver hysteresis affects noise immunity during signal transitions. The SN65C3222PW and SP3222 series use 300 mV hysteresis, while MAX3222 and ICL3222 series use 500 mV. Higher hysteresis provides greater noise immunity but may reduce sensitivity to weak signals. Selection depends on signal integrity requirements in your application environment.

Q: Are all substitutes ROHS3 compliant?

A: All listed substitutes are ROHS3 compliant except SP3222EBEY-L/TR, which is listed as RoHS Compliant without specific ROHS3 designation. All parts meet REACH unaffected status where specified.

Q: Which substitute offers the best inventory availability?

A: MAX3222ECUP+ provides the highest inventory level at 22335 Pcs in Tube packaging. For applications requiring full industrial temperature range (-40°C ~ 85°C) and 1Mbps data rate, MAX3222EEUP+T offers 45400 Pcs in Cut Tape & Digi-Reel format.

Q: Can I use parts with reduced data rates (250kbps or 235kbps) as substitutes?

A: Reduced data rate parts (ICL3222EIVZ, ICL3222EIVZ-T, MAX3222EEUP/V+, SP3222EBEY-L/TR, SP3222ECY-L/TR) are suitable only if your application does not require 1Mbps operation. These parts maintain identical package, supply voltage, and transceiver configuration but operate at lower maximum data rates.

Q: What is the difference between Tube, Cut Tape & Digi-Reel, and Tape & Reel packaging?

A: Tube packaging is used for lower-volume orders and manual handling. Cut Tape & Digi-Reel provides tape format suitable for semi-automated assembly. Tape & Reel is optimized for high-volume automated pick-and-place assembly. All three formats use identical 20-TSSOP components with no electrical differences.

Q: Are there temperature range restrictions I should consider?

A: The SN65C3222PW operates -40°C to 85°C. Direct substitutes maintaining this range include MAX3222EEUP+, MAX3222EEUP+T, MAX3222EEUP/V+, SP3222EUEY-L/TR, SP3222EBEY-L/TR, ICL3222EIVZ, and ICL3222EIVZ-T. Commercial-grade alternatives (MAX3222ECUP+, MAX3222ECUP+T, SP3222ECY-L/TR) operate 0°C to 70°C and are suitable only for non-industrial applications.

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