TRS3223IPWR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS3223IPWR is a full-duplex RS232 transceiver manufactured by Texas Instruments, featuring 2 drivers and 2 receivers in a 20-TSSOP surface mount package. This component is classified as obsolete, indicating that direct procurement from the original manufacturer may be limited. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability for applications requiring RS232 serial communication interfaces.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS3223IPWR
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	-40°C ~ 85°C
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the TRS3223IPWR is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Voltage Supply Range: 3V ~ 5.5V
Operating Temperature: -40°C ~ 85°C
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Compatible Package Options:

Primary: 20-TSSOP (0.173", 4.40mm Width) — direct mechanical and electrical compatibility
Secondary: 20-SSOP (0.209", 5.30mm Width) — functionally equivalent with different footprint dimensions

Performance Parameters (Flexible Within Limits):

Data Rate: 250 kbps (minimum requirement); higher rates acceptable
Receiver Hysteresis: 500 mV (primary); 300 mV acceptable for enhanced noise immunity
Operating Temperature: -40°C ~ 85°C (primary); 0°C ~ 70°C acceptable for commercial-grade applications

Substitute parts are grouped into three categories: direct manufacturer equivalents (same manufacturer, same base product number), parametric equivalents (different manufacturer, identical electrical specifications), and manufacturer-recommended alternatives (active product status with compatible parameters).

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Receiver Hysteresis	Voltage Supply	Operating Temp	Package	Product Status	MSL
TRS3223IPWR	Texas Instruments	RS232	2/2	250 kbps	500 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Obsolete	1
TRS3223EIPWR	Texas Instruments	RS232	2/2	500 kbps	500 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Obsolete	1
MAX3223IPWR	Analog Devices Inc./Maxim Integrated	RS232	2/2	250 kbps	500 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Obsolete	1
ICL3223EIVZ	Renesas Electronics Corporation	RS232	2/2	250 kbps	500 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	3
ICL3223IVZ	Renesas Electronics Corporation	RS232	2/2	250 kbps	300 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	3
ICL3223IVZ-T	Renesas Electronics Corporation	RS232	2/2	250 kbps	300 mV	3V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	3
ICL3223IAZ	Renesas Electronics Corporation	RS232	2/2	250 kbps	300 mV	3V ~ 5.5V	-40°C ~ 85°C	20-SSOP	Active	3
ICL3223IAZ-T	Renesas Electronics Corporation	RS232	2/2	250 kbps	300 mV	3V ~ 5.5V	-40°C ~ 85°C	20-SSOP	Active	3
MAX3223CUP+	Analog Devices Inc./Maxim Integrated	RS232	2/2	120 kbps	300 mV	3V ~ 5.5V	0°C ~ 70°C	20-TSSOP	Active	1
MAX3223CUP+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	120 kbps	300 mV	3V ~ 5.5V	0°C ~ 70°C	20-TSSOP	Active	1
MAX3223ECUP+	Analog Devices Inc./Maxim Integrated	RS232	2/2	250 kbps	500 mV	3V ~ 5.5V	0°C ~ 70°C	20-TSSOP	Active	1
MAX3223ECUP+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	250 kbps	500 mV	3V ~ 5.5V	0°C ~ 70°C	20-TSSOP	Active	1

Engineering Selection Recommendations

Direct Manufacturer Equivalent (Highest Priority): TRS3223EIPWR (Texas Instruments) provides the closest match to the TRS3223IPWR with identical electrical specifications, package, and compliance certifications. This part maintains the same manufacturer lineage and is suitable for direct substitution in existing designs. Although classified as obsolete, it offers the lowest integration risk.

Parametric Equivalent (Primary Alternative): MAX3223IPWR (Analog Devices Inc./Maxim Integrated) matches all critical electrical parameters and package specifications of the TRS3223IPWR. This part is also obsolete but maintains full compatibility with the original design requirements. Selection of this part does not require design modifications.

Manufacturer-Recommended Active Alternatives (Long-Term Supply): ICL3223EIVZ and ICL3223IVZ-T (Renesas Electronics Corporation) are active products with full RS232 transceiver functionality in the 20-TSSOP package. These parts maintain the -40°C ~ 85°C operating temperature range and 3V ~ 5.5V supply voltage compatibility. The receiver hysteresis of 300 mV provides enhanced noise immunity compared to the original 500 mV specification. Both parts are ROHS3 compliant and carry MSL 3 moisture sensitivity rating.

Commercial-Grade Alternative (Reduced Temperature Range): MAX3223ECUP+ and MAX3223ECUP+T (Analog Devices Inc./Maxim Integrated) are active products with identical electrical performance (250 kbps data rate, 500 mV receiver hysteresis) but operate within the 0°C ~ 70°C commercial temperature range. These parts are suitable for applications not requiring the full industrial temperature specification of -40°C ~ 85°C. MSL rating of 1 indicates superior moisture handling characteristics.

Package Variant Alternative (20-SSOP): ICL3223IAZ and ICL3223IAZ-T (Renesas Electronics Corporation) provide full functional equivalence in the 20-SSOP package (0.209", 5.30mm width). These parts require PCB layout modification due to different footprint dimensions but maintain all electrical specifications and active product status. Selection of this variant is appropriate when PCB redesign is feasible and long-term supply assurance is prioritized.

Frequently Asked Questions (FAQ)

Q: Can I use ICL3223EIVZ as a direct replacement for TRS3223IPWR without design changes?

A: Yes. ICL3223EIVZ is electrically and mechanically compatible with TRS3223IPWR. Both parts feature 2/2 RS232 transceiver configuration, 20-TSSOP package, 3V ~ 5.5V supply voltage, and -40°C ~ 85°C operating temperature range. The 300 mV receiver hysteresis of ICL3223EIVZ provides improved noise immunity compared to the 500 mV specification of TRS3223IPWR. No PCB modifications are required.

Q: What is the difference between ICL3223IVZ and ICL3223IAZ?

A: Both parts are Renesas Electronics Corporation RS232 transceivers with identical electrical specifications. The primary difference is package type: ICL3223IVZ uses the 20-TSSOP package (0.173", 4.40mm width), while ICL3223IAZ uses the 20-SSOP package (0.209", 5.30mm width). Selection depends on PCB footprint compatibility. The 20-TSSOP variant (ICL3223IVZ) is mechanically compatible with the original TRS3223IPWR design.

Q: Why do some substitute parts have lower data rates (120 kbps vs. 250 kbps)?

A: MAX3223CUP+ and MAX3223CUP+T are commercial-grade variants of the MAX3223 family with reduced data rate specification. These parts are suitable for applications operating below 120 kbps. If your design requires 250 kbps operation, select MAX3223ECUP+ or MAX3223ECUP+T instead, which maintain the full 250 kbps data rate specification.

Q: What does MSL 3 (168 Hours) mean for Renesas parts?

A: Moisture Sensitivity Level (MSL) 3 indicates that the component must be stored in a controlled humidity environment and has a floor life of 168 hours after exposure to ambient conditions. This is more restrictive than MSL 1 (unlimited floor life). Proper handling and storage procedures are required. Verify that your supply chain and assembly processes support MSL 3 component management.

Q: Can I use MAX3223ECUP+ if my application requires -40°C ~ 85°C operation?

A: No. MAX3223ECUP+ is rated for 0°C ~ 70°C operation only. For applications requiring the full -40°C ~ 85°C industrial temperature range, select ICL3223EIVZ, ICL3223IVZ, ICL3223IVZ-T, or TRS3223EIPWR instead.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference are ROHS3 compliant, matching the compliance status of the original TRS3223IPWR. All parts are also REACH unaffected and carry EAR99 export classification.

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging is used for manual handling and smaller quantity orders. Tape & reel (TR) packaging is used for automated assembly processes and larger production volumes. Both packaging formats contain identical components; selection depends on your manufacturing process and order quantity requirements.

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