TRSF3223CPWRG4 Equivalent & Substitute Parts

Part Overview

The TRSF3223CPWRG4 is a full-duplex RS232 transceiver manufactured by Texas Instruments, featuring 2 drivers and 2 receivers in a 20-TSSOP surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The device operates across a 3V to 5.5V supply range with a 1Mbps data rate and 500mV receiver hysteresis, suitable for legacy RS232 communication applications requiring full-duplex operation.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRSF3223CPWRG4
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	1Mbps
Receiver Hysteresis	500 mV
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TRSF3223CPWRG4 is determined by the following critical parameters:

Core Compatibility Requirements:

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
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Performance Parameters (Allowable Variation):

Data Rate: 1Mbps (minimum requirement; higher rates are acceptable)
Receiver Hysteresis: 500mV (baseline; 300mV variants acceptable for improved noise margin)
Operating Temperature: 0°C ~ 70°C (extended ranges acceptable)

Substitute parts are grouped into three categories: parametric equivalents from Texas Instruments, direct manufacturer alternatives from Analog Devices Inc./Maxim Integrated, and manufacturer-recommended alternatives from MaxLinear, Inc. All listed substitutes maintain identical package geometry, electrical interface compliance, and supply voltage specifications.

Parameter Comparison

Part Number	Manufacturer	Data Rate	Receiver Hysteresis	Operating Temperature	Product Status	Packaging
TRSF3223CPWRG4	Texas Instruments	1Mbps	500 mV	0°C ~ 70°C	Obsolete	-
SN75C3223PWR	Texas Instruments	1Mbps	500 mV	0°C ~ 70°C	Obsolete	Cut Tape (CT) & Digi-Reel®
MAX3223ECUP+	Analog Devices Inc./Maxim Integrated	250kbps	500 mV	0°C ~ 70°C	Active	Tube
MAX3223ECUP+T	Analog Devices Inc./Maxim Integrated	250kbps	500 mV	0°C ~ 70°C	Active	Tape & Reel (TR)
MAX3224ECUP+	Analog Devices Inc./Maxim Integrated	250kbps	500 mV	0°C ~ 70°C	Active	Tube
MAX3224ECUP+T	Analog Devices Inc./Maxim Integrated	250kbps	500 mV	0°C ~ 70°C	Active	Tape & Reel (TR)
MAX3225ECUP+	Analog Devices Inc./Maxim Integrated	1Mbps	500 mV	0°C ~ 70°C	Active	Tube
SP3223EBEY-L/TR	MaxLinear, Inc.	250kbps	300 mV	-40°C ~ 85°C	Active	Tape & Reel (TR)
SP3223ECY-L	MaxLinear, Inc.	235Kbps	300 mV	0°C ~ 70°C	Active	Tube
SP3223ECY-L/TR	MaxLinear, Inc.	235Kbps	300 mV	0°C ~ 70°C	Active	Tape & Reel (TR)
SP3223EEY-L	MaxLinear, Inc.	235Kbps	300 mV	-40°C ~ 85°C	Active	Tube

Engineering Selection Recommendations

Texas Instruments Parametric Equivalent: SN75C3223PWR is a direct parametric match to TRSF3223CPWRG4, maintaining identical electrical specifications including 1Mbps data rate and 500mV receiver hysteresis. Both parts are obsolete; however, SN75C3223PWR offers higher current inventory availability (4772 units) compared to the main part (973 units). This part is suitable for direct replacement in existing designs without modification.

Analog Devices Inc./Maxim Integrated Active Alternatives: MAX3225ECUP+ provides the closest active-status alternative, matching the 1Mbps data rate and 500mV receiver hysteresis of the original part while offering extended product lifecycle support. MAX3223ECUP+/MAX3223ECUP+T and MAX3224ECUP+/MAX3224ECUP+T variants operate at 250kbps, which is acceptable for applications not requiring full 1Mbps bandwidth. All Maxim parts maintain identical package geometry and supply voltage specifications. Tape & Reel (TR) packaging variants are available for high-volume production requirements.

MaxLinear, Inc. Manufacturer-Recommended Alternatives: SP3223 series parts (SP3223EBEY-L/TR, SP3223ECY-L, SP3223ECY-L/TR, SP3223EEY-L) are active-status alternatives with improved receiver hysteresis (300mV vs. 500mV), providing enhanced noise immunity. SP3223EBEY-L/TR and SP3223EEY-L offer extended operating temperature range (-40°C ~ 85°C), suitable for industrial applications. Data rates range from 235Kbps to 250kbps, which is acceptable for standard RS232 communication protocols. All SP3223 variants maintain ROHS3 compliance and identical package specifications.

Selection Criteria:

For direct replacement with maximum compatibility: SN75C3223PWR
For active-status long-term support with 1Mbps performance: MAX3225ECUP+
For industrial temperature range requirements: SP3223EBEY-L/TR or SP3223EEY-L
For high-volume production: Tape & Reel (TR) packaging variants (MAX3223ECUP+T, MAX3224ECUP+T, SP3223EBEY-L/TR, SP3223ECY-L/TR)

Frequently Asked Questions (FAQ)

Q: Can MAX3223ECUP+ replace TRSF3223CPWRG4 directly? A: Yes. MAX3223ECUP+ maintains all critical parameters: 2/2 full-duplex RS232 transceiver, 20-TSSOP package, 3V ~ 5.5V supply, and 500mV receiver hysteresis. The 250kbps data rate is lower than the original 1Mbps specification but is compatible with standard RS232 communication protocols. For applications requiring 1Mbps performance, MAX3225ECUP+ is the recommended alternative.

Q: What is the difference between SP3223ECY-L and SP3223ECY-L/TR? A: Both parts are electrically identical. SP3223ECY-L is supplied in Tube packaging, while SP3223ECY-L/TR is supplied in Tape & Reel (TR) packaging. Tape & Reel packaging is preferred for automated assembly and high-volume production. Tube packaging is suitable for lower-volume applications and manual assembly.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitute parts maintain RoHS3 compliance or equivalent RoHS compliance status, consistent with the original TRSF3223CPWRG4 specification.

Q: Can I use SP3223 parts in place of MAX3223 parts? A: Yes, within the constraints of your application requirements. Both SP3223 and MAX3223 series maintain identical package geometry, supply voltage, and 2/2 full-duplex RS232 transceiver functionality. SP3223 parts feature improved receiver hysteresis (300mV vs. 500mV), which provides better noise immunity. Data rate differences (235Kbps to 250kbps vs. 250kbps to 1Mbps) must be evaluated against your specific communication protocol requirements.

Q: What is the significance of receiver hysteresis in RS232 transceiver selection? A: Receiver hysteresis determines the voltage differential required for the receiver to switch logic states, affecting noise immunity and signal integrity. The original TRSF3223CPWRG4 specifies 500mV hysteresis. SP3223 alternatives offer 300mV hysteresis, providing improved sensitivity to smaller signal transitions. Both specifications are acceptable for standard RS232 applications; selection depends on your noise environment and signal quality requirements.

Q: Is the operating temperature range critical for substitution? A: Operating temperature range is application-dependent. The original part specifies 0°C ~ 70°C. Substitute parts with extended ranges (-40°C ~ 85°C) are suitable for industrial and automotive applications. For standard commercial applications within 0°C ~ 70°C, all listed substitutes are acceptable.

Q: Why is TRSF3223CPWRG4 marked as obsolete? A: Obsolete status indicates the manufacturer has discontinued production. Active-status alternatives (MAX3223, MAX3224, MAX3225, SP3223 series) provide equivalent or superior functionality with ongoing manufacturer support, ensuring long-term availability and design continuity.

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