TRS3223CPWRG4 Equivalent & Substitute Parts

Part Overview

The TRS3223CPWRG4 is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments, housed in a 20-TSSOP surface mount package. This component is classified as obsolete, with 1163 units currently in stock. RS232 transceivers serve as interface bridges between microcontroller logic levels and RS232 serial communication standards, making them essential in legacy industrial, medical, and telecommunications equipment. Due to its obsolete status, identifying functionally equivalent alternatives ensures design continuity and supply chain reliability for maintenance and production applications.

Key Parameters

Parameter	TRS3223CPWRG4 Value
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	250 kbps
Voltage Supply Range	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	20-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the TRS3223CPWRG4 is determined by the following critical parameters:

Mandatory Matching Parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Voltage Supply Range: 3V ~ 5.5V (minimum overlap required)
Package / Case: 20-TSSOP or compatible footprint
Mounting Type: Surface Mount

Allowable Variation Parameters:

Receiver Hysteresis: 300 mV to 500 mV (both acceptable for RS232 standard compliance)
Data Rate: 120 kbps to 500 kbps (all exceed minimum RS232 requirements)
Operating Temperature: Extended ranges (-40°C ~ 85°C) are acceptable upgrades from 0°C ~ 70°C
Product Status: Active parts are preferred over obsolete for long-term availability
Moisture Sensitivity Level: MSL 1 to MSL 3 acceptable (lower MSL values indicate better storage stability)

Substitute parts are categorized as Parametric Equivalent, Direct Manufacturer, Upgrade, or Manufacturer Recommended based on deviation from the original specification.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Receiver Hysteresis	Operating Temp	Package	Product Status	Inventory
TRS3223CPWRG4	Texas Instruments	RS232	2/2	250 kbps	500 mV	0°C ~ 70°C	20-TSSOP	Obsolete	1163
MAX3223CPWR	Texas Instruments	RS232	2/2	250 kbps	500 mV	0°C ~ 70°C	20-TSSOP	Obsolete	3200
TRS3223ECPW	Texas Instruments	RS232	2/2	500 kbps	500 mV	0°C ~ 70°C	20-TSSOP	Obsolete	1392
MAX3223EEUP+	Analog Devices Inc./Maxim Integrated	RS232	2/2	120 kbps	300 mV	-40°C ~ 85°C	20-TSSOP	Active	2188
MAX3223EEUP+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	120 kbps	300 mV	-40°C ~ 85°C	20-TSSOP	Active	5400
SP3223EBEY-L/TR	MaxLinear, Inc.	RS232	2/2	250 kbps	300 mV	-40°C ~ 85°C	20-TSSOP	Active	3321
SP3223EEY-L	MaxLinear, Inc.	RS232	2/2	235 kbps	300 mV	-40°C ~ 85°C	20-TSSOP	Active	5965
SP3223EEY-L/TR	MaxLinear, Inc.	RS232	2/2	235 kbps	300 mV	-40°C ~ 85°C	20-TSSOP	Active	25200
ICL3223EIVZ	Renesas Electronics Corporation	RS232	2/2	250 kbps	500 mV	-40°C ~ 85°C	20-TSSOP	Active	1978
ICL3223EIVZ-T	Renesas Electronics Corporation	RS232	2/2	250 kbps	500 mV	-40°C ~ 85°C	20-TSSOP	Active	1500
ICL3223IAZ	Renesas Electronics Corporation	RS232	2/2	250 kbps	300 mV	-40°C ~ 85°C	20-SSOP	Active	1416

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): MAX3223CPWR is the closest parametric equivalent, matching all electrical and thermal specifications of the TRS3223CPWRG4. Both are obsolete Texas Instruments parts with identical 2/2 RS232 configuration, 250 kbps data rate, and 500 mV receiver hysteresis. MAX3223CPWR offers higher inventory availability (3200 units) compared to the original part.

For Extended Temperature Range Applications: ICL3223EIVZ and ICL3223EIVZ-T (Renesas Electronics) provide identical electrical performance with extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C). Both maintain 250 kbps data rate and 500 mV receiver hysteresis. These parts are active products with ROHS3 compliance and REACH unaffected status, ensuring long-term supply chain stability.

For Active Product Status with Maintained Performance: SP3223EBEY-L/TR and SP3223EEY-L/TR (MaxLinear, Inc.) are active products with 235-250 kbps data rates and extended temperature ranges. These parts feature 300 mV receiver hysteresis (within RS232 standard tolerance) and offer the highest inventory availability (3321 and 25200 units respectively). Both are RoHS compliant with MSL 1 rating.

For Cost-Optimized Legacy Support: MAX3223EEUP+T (Analog Devices Inc./Maxim Integrated) is an active product with the highest inventory availability (5400 units) in Cut Tape & Digi-Reel packaging. While data rate is reduced to 120 kbps and receiver hysteresis to 300 mV, both parameters remain within RS232 standard compliance for legacy serial communication applications.

Package Consideration: ICL3223IAZ uses 20-SSOP package (5.30mm width) instead of 20-TSSOP (4.40mm width). This part is suitable only for designs with PCB layout flexibility to accommodate the wider package footprint.

Frequently Asked Questions (FAQ)

Q: Can I use MAX3223EEUP+T as a direct replacement for TRS3223CPWRG4? A: Yes, MAX3223EEUP+T is electrically compatible. It maintains the 2/2 RS232 full-duplex configuration and 3V ~ 5.5V supply range. The reduced data rate (120 kbps versus 250 kbps) and receiver hysteresis (300 mV versus 500 mV) are both within RS232 standard specifications. The extended operating temperature range (-40°C ~ 85°C) is an improvement over the original 0°C ~ 70°C specification.

Q: What is the difference between 20-TSSOP and 20-SSOP packages? A: Both are 20-pin surface mount packages with identical pin configurations. The primary difference is width: 20-TSSOP measures 4.40mm width, while 20-SSOP measures 5.30mm width. If your PCB layout is designed for 20-TSSOP, use only 20-TSSOP parts. The ICL3223IAZ (20-SSOP) requires PCB redesign and is not a direct footprint replacement.

Q: Why do some substitutes have lower data rates (120 kbps) than the original (250 kbps)? A: RS232 serial communication operates reliably at data rates well below the maximum capability of these transceivers. A 120 kbps transceiver is fully compatible with applications designed for 250 kbps operation, as it exceeds the actual communication speed requirements of most legacy RS232 systems. The transceiver will operate at whatever baud rate the host microcontroller specifies, up to its maximum rated speed.

Q: What does receiver hysteresis mean, and why does it vary between parts? A: Receiver hysteresis is the voltage difference between the rising and falling threshold levels of the RS232 input comparator. Both 300 mV and 500 mV hysteresis values meet RS232 standard specifications (±200 mV minimum). Higher hysteresis (500 mV) provides slightly better noise immunity on long cable runs; lower hysteresis (300 mV) provides faster response to signal transitions. Both are functionally equivalent for standard RS232 applications.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitute parts carry either ROHS3 Compliant or RoHS Compliant certification. The original TRS3223CPWRG4 is ROHS3 compliant. All substitutes meet or exceed this environmental compliance standard.

Q: What is the significance of product status (Active vs. Obsolete)? A: Active products are currently manufactured and supported by their suppliers, ensuring long-term availability and consistent quality. Obsolete products are no longer manufactured; existing inventory is finite. For new designs or long-term production, active products (MAX3223EEUP+T, SP3223EEY-L/TR, ICL3223EIVZ-T) are recommended. For immediate replacement of failed components in legacy systems, any listed part with available inventory is suitable.

Q: Can I mix different substitute parts in the same design? A: Yes, all listed parts are functionally equivalent within RS232 standard specifications. However, for manufacturing consistency and supply chain simplicity, selecting a single part number for production is recommended. If mixing parts, ensure your design accommodates the full range of specified parameters across all selected parts.

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