TRSF3222IPW RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRSF3222IPW is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments in a 20-TSSOP surface mount package. This part is classified as obsolete, with 989 units currently in stock. Due to its obsolete status, identifying equivalent and substitute parts is necessary for ongoing design support, production continuity, and long-term component availability. Substitute parts must maintain compatibility across electrical specifications, mechanical packaging, and functional performance parameters.

Key Parameters

Parameter	TRSF3222IPW
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	300 mV
Data Rate	1 Mbps
Supply Voltage	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TRSF3222IPW is determined by the following critical parameters:

Package / Case: All substitutes must use 20-TSSOP (0.173", 4.40mm Width) surface mount packaging for PCB layout compatibility
Protocol: RS232 full-duplex transceiver functionality is mandatory
Drivers/Receivers Configuration: 2/2 configuration required
Supply Voltage Range: 3V ~ 5.5V operating range
Operating Temperature Range: Minimum -40°C ~ 85°C support
Receiver Hysteresis: 300 mV specification (500 mV variants acceptable with design verification)
Data Rate: 1 Mbps minimum performance (lower rates acceptable for legacy applications)
RoHS Compliance: ROHS3 compliance required for regulatory alignment

Substitute parts are grouped into three categories: direct manufacturer equivalents from Texas Instruments, parametric equivalents from alternative manufacturers, and manufacturer-recommended alternatives. All listed substitutes maintain identical package geometry and core RS232 transceiver functionality.

Parameter Comparison

Part Number	Manufacturer	Product Status	Data Rate	Receiver Hysteresis	Operating Temp	Packaging	RoHS Status	MSL Rating	Inventory
TRSF3222IPW	Texas Instruments	Obsolete	1 Mbps	300 mV	-40°C ~ 85°C	20-TSSOP	ROHS3	1	989 Pcs
TRSF3222EIPWR	Texas Instruments	Active	500 kbps	300 mV	-40°C ~ 85°C	20-TSSOP	ROHS3	1	2780 Pcs
SN65C3222PW	Texas Instruments	Last Time Buy	1 Mbps	300 mV	-40°C ~ 85°C	20-TSSOP	ROHS3	1	960 Pcs
MAX3222EEUP+	Analog Devices Inc./Maxim Integrated	Active	1 Mbps	500 mV	-40°C ~ 85°C	20-TSSOP	ROHS3	1	2987 Pcs
MAX3222EEUP+T	Analog Devices Inc./Maxim Integrated	Active	1 Mbps	500 mV	-40°C ~ 85°C	20-TSSOP	ROHS3	1	45400 Pcs
MAX3222EEUP/V+	Analog Devices Inc./Maxim Integrated	Active	250 kbps	500 mV	-40°C ~ 85°C	20-TSSOP	ROHS3	1	774 Pcs
ST3222EBTR	STMicroelectronics	Active	250 kbps	500 mV	-40°C ~ 85°C	20-TSSOP	ROHS3	3	1256 Pcs
SP3222EBEY-L/TR	MaxLinear, Inc.	Active	250 kbps	300 mV	-40°C ~ 85°C	20-TSSOP	RoHS Compliant	1	782 Pcs
SP3222ECY-L/TR	MaxLinear, Inc.	Active	235 kbps	300 mV	0°C ~ 70°C	20-TSSOP	ROHS3	1	2170 Pcs
SP3222EEY-L/TR	MaxLinear, Inc.	Active	235 kbps	300 mV	-40°C ~ 85°C	20-TSSOP	ROHS3	1	18633 Pcs
SP3222EUCY-L/TR	MaxLinear, Inc.	Active	1 Mbps	300 mV	0°C ~ 70°C	20-TSSOP	RoHS Compliant	1	22700 Pcs

Engineering Selection Recommendations

Direct Texas Instruments Equivalents

TRSF3222EIPWR is an active product from Texas Instruments with identical package and electrical specifications to the obsolete TRSF3222IPW, with the exception of reduced data rate (500 kbps vs. 1 Mbps). This part is suitable for applications where the lower data rate does not impact system performance. SN65C3222PW maintains full 1 Mbps performance and identical receiver hysteresis but carries Last Time Buy status, indicating limited future availability.

Maxim Integrated (Analog Devices) Alternatives

MAX3222EEUP+T offers the highest inventory availability (45400 units) with full 1 Mbps data rate and active product status. The 500 mV receiver hysteresis specification differs from the original 300 mV but remains within acceptable RS232 transceiver tolerances. Packaging is available in Cut Tape (CT) & Digi-Reel format. MAX3222EEUP+ and MAX3222EEUP/V+ provide alternative packaging options with active status but lower inventory levels.

STMicroelectronics Alternative

ST3222EBTR is an active product with 1256 units in stock. The MSL rating of 3 (168 Hours) differs from the original MSL 1 rating, requiring moisture control during storage and handling. Data rate is reduced to 250 kbps.

MaxLinear Alternatives

SP3222EEY-L/TR provides the largest inventory (18633 units) with active status, full -40°C ~ 85°C operating range, and 300 mV receiver hysteresis matching the original specification. Data rate is 235 kbps. SP3222EUCY-L/TR matches the original 1 Mbps data rate and 300 mV hysteresis but operates only at 0°C ~ 70°C temperature range. SP3222ECY-L/TR and SP3222EBEY-L/TR offer alternative configurations with reduced operating temperature ranges or data rates.

All substitute parts maintain ROHS3 compliance or equivalent RoHS certification and are available in the required 20-TSSOP package. Selection should prioritize active product status and inventory availability for long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can MAX3222EEUP+T replace TRSF3222IPW directly?

A: Yes. Both parts are 2/2 full-duplex RS232 transceivers in 20-TSSOP packaging with identical supply voltage (3V ~ 5.5V) and operating temperature range (-40°C ~ 85°C). The receiver hysteresis differs (500 mV vs. 300 mV) and data rate is identical at 1 Mbps. The higher hysteresis specification does not prevent functional substitution in standard RS232 applications.

Q: What is the difference between SP3222EEY-L/TR and SP3222EUCY-L/TR?

A: Both are MaxLinear RS232 transceivers in 20-TSSOP packaging with 300 mV receiver hysteresis. SP3222EEY-L/TR operates across -40°C ~ 85°C with 235 kbps data rate and has 18633 units in stock. SP3222EUCY-L/TR operates at 0°C ~ 70°C with 1 Mbps data rate and has 22700 units in stock. Selection depends on required operating temperature range and data rate requirements.

Q: Why does ST3222EBTR have MSL 3 rating instead of MSL 1?

A: MSL (Moisture Sensitivity Level) 3 indicates the component requires moisture control during storage and handling, with a floor life of 168 hours after bag opening. MSL 1 components have unlimited floor life. ST3222EBTR requires proper moisture management during assembly but is otherwise functionally equivalent. This affects handling procedures, not electrical performance.

Q: Is SN65C3222PW a suitable long-term replacement?

A: SN65C3222PW is a parametric equivalent with full 1 Mbps performance and 300 mV receiver hysteresis matching the original TRSF3222IPW. However, it carries Last Time Buy status, indicating limited future availability. It is suitable for immediate replacement but not recommended for new long-term designs due to supply constraints.

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

A: Lower data rate parts are functionally compatible if system requirements do not exceed their specified maximum data rate. ST3222EBTR (250 kbps), SP3222EBEY-L/TR (250 kbps), SP3222ECY-L/TR (235 kbps), and SP3222EEY-L/TR (235 kbps) are all valid substitutes for applications operating below their rated data rates. Verify application data rate requirements before selection.

Q: What packaging formats are available for these substitutes?

A: All substitute parts use 20-TSSOP (0.173", 4.40mm Width) surface mount packaging. Packaging formats vary: MAX3222EEUP+T is available in Cut Tape (CT) & Digi-Reel format; MAX3222EEUP+ and MAX3222EEUP/V+ are available in Tube; SP3222 variants are available in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel formats. Verify packaging availability with your supplier for production requirements.

Q: Are all substitutes RoHS compliant?

A: All listed substitutes are RoHS compliant. Most carry ROHS3 certification. SP3222EUCY-L/TR and SP3222EBEY-L/TR are marked as RoHS Compliant without specific version designation. All parts meet current regulatory requirements for RoHS compliance.

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