TRS3243CPWR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS3243CPWR is a full-duplex RS232 transceiver manufactured by Texas Instruments, designed for 3/5 driver/receiver configurations in 28-TSSOP surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The device operates across a 3V to 5.5V supply range with a 250kbps data rate and 500mV receiver hysteresis, suitable for legacy serial communication applications requiring industrial-grade reliability.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS3243CPWR
Manufacturer	Texas Instruments
Product Category	Interface / RS232 Transceiver
Type	Transceiver, Full Duplex
Number of Drivers/Receivers	3/5
Data Rate	250kbps
Receiver Hysteresis	500mV
Voltage Supply Range	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package / Case	28-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TRS3243CPWR is determined by strict adherence to the following critical parameters:

Core Compatibility Parameters:

Protocol: RS232
Number of Drivers/Receivers: 3/5 configuration
Package / Case: 28-TSSOP (0.173", 4.40mm Width)
Mounting Type: Surface Mount
Voltage Supply Range: 3V ~ 5.5V
Receiver Hysteresis: 500mV (primary specification)
Data Rate: 250kbps or higher
Operating Temperature: 0°C ~ 70°C minimum

Substitute parts are grouped into three categories based on their relationship to the main part:

MFR Recommended: TRS3243ECPWR represents the direct manufacturer evolution, maintaining identical electrical specifications while offering active product status and improved data rate (500kbps).

Parametric Equivalent: MAX3243CPWR matches all critical electrical parameters including 250kbps data rate and 500mV receiver hysteresis, with identical package and supply specifications.

Direct Equivalents: MAX3243ECUI+, MAX3243ECUI+T, MAX3244ECUI+, and MAX3245ECUI+ maintain core RS232 3/5 transceiver functionality with identical packaging, though with variations in data rate and receiver hysteresis specifications.

Upgrade Options: MAX3243EEUI+, MAX3243EEUI+T, MAX3244EEUI+, and SP3243EEY-L extend the operating temperature range to -40°C ~ 85°C, providing enhanced thermal performance for demanding applications while maintaining all other core specifications.

Parameter Comparison

Part Number	Manufacturer	Product Status	Data Rate	Receiver Hysteresis	Operating Temperature	Packaging	Inventory (Pcs)
TRS3243CPWR	Texas Instruments	Obsolete	250kbps	500mV	0°C ~ 70°C	Cut Tape	2200
TRS3243ECPWR	Texas Instruments	Active	500kbps	500mV	0°C ~ 70°C	Tape & Reel	2880
MAX3243CPWR	Texas Instruments	Active	250kbps	500mV	0°C ~ 70°C	Cut Tape & Digi-Reel	45100
MAX3243ECUI+	Analog Devices Inc./Maxim Integrated	Active	120Kbps	300mV	0°C ~ 70°C	Tube	2100
MAX3243ECUI+T	Analog Devices Inc./Maxim Integrated	Active	120Kbps	300mV	0°C ~ 70°C	Tape & Reel	3700
MAX3244ECUI+	Analog Devices Inc./Maxim Integrated	Active	250kbps	500mV	0°C ~ 70°C	Tube	924
MAX3245ECUI+	Analog Devices Inc./Maxim Integrated	Active	1Mbps	500mV	0°C ~ 70°C	Tube	5200
MAX3243EEUI+	Analog Devices Inc./Maxim Integrated	Active	120Kbps	300mV	-40°C ~ 85°C	Tube	1900
MAX3243EEUI+T	Analog Devices Inc./Maxim Integrated	Active	120Kbps	300mV	-40°C ~ 85°C	Tape & Reel	2300
MAX3244EEUI+	Analog Devices Inc./Maxim Integrated	Active	250kbps	500mV	-40°C ~ 85°C	Tube	1589
SP3243EEY-L	MaxLinear, Inc.	Active	120Kbps	300mV	-40°C ~ 85°C	Tube	1490

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): Select MAX3243CPWR or TRS3243ECPWR when exact electrical parameter matching is required. Both maintain 250kbps data rate and 500mV receiver hysteresis. TRS3243ECPWR offers active product status and higher inventory availability through Tape & Reel packaging. MAX3243CPWR provides the highest inventory level (45,100 units) with Cut Tape & Digi-Reel options.

For Active Product Status with Enhanced Performance: TRS3243ECPWR delivers manufacturer-recommended substitution with doubled data rate (500kbps) while preserving all other core specifications. This part is actively manufactured and supported.

For Extended Temperature Range Applications: MAX3244EEUI+ or MAX3243EEUI+ extend operating temperature to -40°C ~ 85°C, suitable for industrial and automotive environments. MAX3244EEUI+ maintains the original 250kbps data rate and 500mV receiver hysteresis specifications.

For Higher Data Rate Requirements: MAX3245ECUI+ supports 1Mbps data rate with identical 500mV receiver hysteresis and 3V ~ 5.5V supply range, enabling faster serial communication within the same package footprint.

Compliance Verification: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating. All parts are classified under ECCN EAR99 and HTSUS 8542.39.0001.

Frequently Asked Questions (FAQ)

Q: Can MAX3243ECUI+ directly replace TRS3243CPWR? A: MAX3243ECUI+ maintains RS232 protocol, 3/5 transceiver configuration, and 28-TSSOP packaging. However, it operates at 120Kbps data rate and 300mV receiver hysteresis, both lower than the original 250kbps and 500mV specifications. Use only if your application tolerates reduced data rate and hysteresis performance.

Q: What is the difference between MAX3244ECUI+ and MAX3244EEUI+? A: Both parts maintain identical electrical specifications (250kbps data rate, 500mV receiver hysteresis). The primary difference is operating temperature range: MAX3244ECUI+ operates 0°C ~ 70°C, while MAX3244EEUI+ extends to -40°C ~ 85°C. Select the extended-range version for applications requiring broader thermal performance.

Q: Is packaging interchangeable between Tube, Tape & Reel, and Cut Tape options? A: Yes. Tube, Tape & Reel (TR), and Cut Tape (CT) packaging contain identical die and electrical specifications. Packaging selection depends on assembly process requirements and volume handling. Tape & Reel is standard for automated pick-and-place assembly; Tube is typical for manual assembly or lower volumes.

Q: Why does TRS3243ECPWR have higher data rate (500kbps) than TRS3243CPWR (250kbps)? A: TRS3243ECPWR represents an improved revision of the same base product. The enhanced data rate reflects manufacturing improvements while maintaining backward compatibility with all other electrical and mechanical specifications.

Q: Can I use MAX3245ECUI+ as a drop-in replacement? A: MAX3245ECUI+ is electrically compatible with identical supply voltage, package, and receiver hysteresis (500mV). The 1Mbps data rate is a performance upgrade suitable for applications requiring higher serial communication speeds. No design changes are required for substitution.

Q: What does "3/5" in the transceiver designation mean? A: This indicates 3 drivers and 5 receivers within the single IC package. All listed substitute parts maintain this 3/5 configuration, ensuring functional equivalence in applications designed for this driver/receiver count.

Q: Are all parts RoHS compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance. SP3243EEY-L carries RoHS Compliant status. All other parts are ROHS3 Compliant. REACH status is unaffected for all parts.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message