TRS3222CPWR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS3222CPWR 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 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates across a 3V to 5.5V supply range with a 250kbps data rate and 300mV receiver hysteresis, suitable for legacy serial communication applications requiring RS232 protocol compliance.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS3222CPWR
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Data Rate	250kbps
Receiver Hysteresis	300 mV
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the TRS3222CPWR is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Package / Case: 20-TSSOP (0.173", 4.40mm Width)
Mounting Type: Surface Mount
Voltage - Supply: 3V ~ 5.5V
RoHS Status: ROHS3 Compliant or equivalent

Allowable Variations:

Data Rate: Substitute parts may exceed 250kbps (backward compatible)
Receiver Hysteresis: Substitute parts may differ (300mV or 500mV acceptable)
Operating Temperature: Substitute parts may exceed 0°C ~ 70°C range (extended range acceptable)
Product Status: Active status preferred over obsolete
Moisture Sensitivity Level: MSL 1 or MSL 3 acceptable

Substitute parts are grouped by their relationship to the main part: parametric equivalents maintain identical electrical specifications, upgrade parts offer enhanced performance characteristics, and manufacturer-recommended parts provide direct functional replacement with potential specification improvements.

Parameter Comparison

Part Number	Manufacturer	Product Status	Data Rate	Receiver Hysteresis	Operating Temperature	Packaging	Inventory (Pcs)
TRS3222CPWR	Texas Instruments	Obsolete	250kbps	300 mV	0°C ~ 70°C	-	2300
MAX3222CPWR	Texas Instruments	Active	250kbps	300 mV	0°C ~ 70°C	Cut Tape (CT) & Digi-Reel®	2307
MAX3222EEUP+	Analog Devices Inc./Maxim Integrated	Active	1Mbps	500 mV	-40°C ~ 85°C	Tube	2987
MAX3222EEUP+T	Analog Devices Inc./Maxim Integrated	Active	1Mbps	500 mV	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	45400
SP3222EBEY-L/TR	MaxLinear, Inc.	Active	250kbps	300 mV	-40°C ~ 85°C	-	782
ST3222EBTR	STMicroelectronics	Active	250kbps	500 mV	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	1256
MAX3222CUP+	Analog Devices Inc./Maxim Integrated	Active	120Kbps	300 mV	0°C ~ 70°C	Tube	2266
MAX3222CUP+T	Analog Devices Inc./Maxim Integrated	Active	120Kbps	300 mV	0°C ~ 70°C	Cut Tape (CT)	4517
MAX3222ECUP+	Analog Devices Inc./Maxim Integrated	Active	1Mbps	500 mV	0°C ~ 70°C	Tube	22335
MAX3222ECUP+T	Analog Devices Inc./Maxim Integrated	Active	1Mbps	500 mV	0°C ~ 70°C	Tape & Reel (TR)	3120
MAX3222EUP+	Analog Devices Inc./Maxim Integrated	Active	120Kbps	300 mV	-40°C ~ 85°C	Tube	2000

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement): MAX3222CPWR is the primary parametric equivalent, maintaining identical electrical specifications while offering active product status and improved supply availability. This part is recommended for designs requiring no specification changes from the original TRS3222CPWR.

Upgrade Options (Enhanced Performance): MAX3222EEUP+T and MAX3222ECUP+T provide 1Mbps data rate capability with extended operating temperature range (-40°C ~ 85°C), suitable for applications requiring higher bandwidth or broader thermal operating conditions. These parts maintain ROHS3 compliance and MSL 1 rating.

Alternative Equivalents (Same Specifications, Different Manufacturers): SP3222EBEY-L/TR (MaxLinear) and ST3222EBTR (STMicroelectronics) maintain the 250kbps data rate and 3V ~ 5.5V supply range. SP3222EBEY-L/TR offers extended temperature range (-40°C ~ 85°C). ST3222EBTR carries MSL 3 rating, requiring controlled moisture handling during storage and assembly.

Manufacturer-Recommended Parts: MAX3222CUP+T and MAX3222EUP+ are manufacturer-recommended alternatives with active product status and full ROHS3 compliance. Selection between these options depends on operating temperature requirements and packaging preferences.

Frequently Asked Questions (FAQ)

Q: Can MAX3222EEUP+T replace TRS3222CPWR in all applications? A: MAX3222EEUP+T is electrically compatible as a 2/2 full-duplex RS232 transceiver in the 20-TSSOP package. The higher data rate (1Mbps vs. 250kbps) and extended temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C) are backward compatible. Verify your application does not depend on the lower hysteresis specification of the original part (300mV vs. 500mV).

Q: What is the difference between Cut Tape (CT) and Tube packaging? A: Cut Tape (CT) & Digi-Reel® packaging is suitable for automated pick-and-place assembly. Tube packaging is used for manual handling and lower-volume applications. Both contain identical die and electrical specifications; packaging selection depends on assembly process requirements.

Q: Why does ST3222EBTR have MSL 3 instead of MSL 1? A: MSL 3 indicates a 168-hour moisture sensitivity level, requiring controlled storage conditions (typically 30°C / 60% RH or lower). MSL 1 parts have unlimited shelf life under standard conditions. Select MSL 1 parts for applications with less stringent moisture control requirements.

Q: Is MAX3222CUP+T suitable if my application only requires 120Kbps? A: Yes. MAX3222CUP+T operates at 120Kbps, which is lower than the original 250kbps specification. This part maintains identical supply voltage (3V ~ 5.5V), operating temperature (0°C ~ 70°C), and receiver hysteresis (300mV) as the TRS3222CPWR, making it functionally compatible for lower-speed applications.

Q: Are all substitute parts ROHS3 compliant? A: All listed substitute parts carry ROHS3 compliance or equivalent RoHS certification, meeting environmental regulatory requirements for lead-free manufacturing and restricted substance limitations.

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