TRS3232CPWR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS3232CPWR is a full-duplex RS232 transceiver manufactured by Texas Instruments, designed for serial communication applications requiring 2 drivers and 2 receivers in a 16-TSSOP surface mount package. The device operates across a 3V to 5.5V supply voltage range with a 250kbps data rate and 300mV receiver hysteresis. The TRS3232CPWR is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Substitute parts maintain identical electrical and mechanical specifications while offering active product status and improved availability.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS3232CPWR
Manufacturer	Texas Instruments
Category	Interface
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	300 mV
Data Rate	250kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	16-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the TRS3232CPWR are classified based on electrical and mechanical parameter alignment. The critical parameters determining substitution eligibility are:

Core Electrical Parameters: Protocol (RS232), Number of Drivers/Receivers (2/2), Duplex (Full), Data Rate (250kbps), Voltage Supply Range (3V ~ 5.5V), and Package Type (16-TSSOP).

Parametric Equivalents maintain all core electrical specifications and operating temperature range (0°C ~ 70°C) with identical receiver hysteresis (300mV). These parts are direct replacements with no functional differences: MAX3232CPWR, MAX3232CPWRG4, MAX3232ECPWR, and TRS3232ECPWR.

Upgrade Parts maintain all core electrical specifications but feature enhanced operating temperature ranges (-40°C ~ 85°C) and/or improved receiver hysteresis (500mV), providing superior performance margins: MAX3232EEUE+, MAX3232EEUE+T, SP3232EBEY-L/TR, ST3232EBTR, ADM3232EARUZ, and ADM3232EARUZ-REEL7.

All substitute parts comply with ROHS3, maintain MSL 1 rating, and are housed in identical 16-TSSOP packages, ensuring mechanical and thermal compatibility.

Parameter Comparison

Part Number	Manufacturer	Product Status	Receiver Hysteresis	Data Rate	Operating Temperature	Packaging	Inventory
TRS3232CPWR	Texas Instruments	Obsolete	300 mV	250kbps	0°C ~ 70°C	Standard	2,592 Pcs
MAX3232CPWR	Texas Instruments	Active	300 mV	250kbps	0°C ~ 70°C	Cut Tape (CT) & Digi-Reel®	25,200 Pcs
MAX3232CPWRG4	Texas Instruments	Discontinued at DiGi Electronics	300 mV	250kbps	0°C ~ 70°C	Cut Tape (CT) & Digi-Reel®	3,100 Pcs
MAX3232ECPWR	Texas Instruments	Active	300 mV	250kbps	0°C ~ 70°C	Cut Tape (CT) & Digi-Reel®	75,100 Pcs
TRS3232ECPWR	Texas Instruments	Active	300 mV	250kbps	0°C ~ 70°C	Cut Tape (CT) & Digi-Reel®	75,750 Pcs
MAX3232EEUE+	Analog Devices Inc./Maxim Integrated	Active	500 mV	250kbps	-40°C ~ 85°C	Tube	2,100 Pcs
MAX3232EEUE+T	Analog Devices Inc./Maxim Integrated	Active	500 mV	250kbps	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	30,300 Pcs
SP3232EBEY-L/TR	MaxLinear, Inc.	Active	300 mV	250kbps	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	30,194 Pcs
ST3232EBTR	STMicroelectronics	Active	500 mV	250kbps	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	129,821 Pcs
ADM3232EARUZ	Analog Devices Inc.	Active	500 mV	460Kbps	-40°C ~ 85°C	Tube	1,340 Pcs
ADM3232EARUZ-REEL7	Analog Devices Inc.	Active	500 mV	460Kbps	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	30,400 Pcs

Engineering Selection Recommendations

For direct replacement of the obsolete TRS3232CPWR with identical electrical specifications, select from the parametric equivalent group: MAX3232CPWR, MAX3232ECPWR, or TRS3232ECPWR. All three maintain 300mV receiver hysteresis, 250kbps data rate, and 0°C to 70°C operating temperature range. MAX3232ECPWR and TRS3232ECPWR offer superior inventory availability (75,100 and 75,750 units respectively) and active product status.

For applications requiring extended operating temperature range (-40°C to 85°C) or improved receiver hysteresis (500mV), upgrade parts provide enhanced performance margins: MAX3232EEUE+T, SP3232EBEY-L/TR, ST3232EBTR, and ADM3232EARUZ-REEL7. ST3232EBTR from STMicroelectronics provides the highest inventory availability (129,821 units) among upgrade options.

For applications requiring higher data rate capability (460Kbps), ADM3232EARUZ and ADM3232EARUZ-REEL7 from Analog Devices Inc. provide manufacturer-recommended alternatives with extended temperature range and improved receiver hysteresis. ADM3232EARUZ-REEL7 is available in Cut Tape & Digi-Reel packaging with 30,400 units in stock.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and 16-TSSOP package compatibility, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can MAX3232CPWR directly replace TRS3232CPWR without design changes?

A: Yes. MAX3232CPWR is a parametric equivalent maintaining identical electrical specifications: 2/2 full-duplex RS232 transceiver, 300mV receiver hysteresis, 250kbps data rate, 3V to 5.5V supply voltage, and 0°C to 70°C operating temperature. The 16-TSSOP package is mechanically identical, requiring no PCB layout modifications.

Q: What is the difference between parametric equivalents and upgrade parts?

A: Parametric equivalents (MAX3232CPWR, MAX3232ECPWR, TRS3232ECPWR) maintain all original electrical specifications including 300mV receiver hysteresis and 0°C to 70°C operating temperature. Upgrade parts (MAX3232EEUE+T, SP3232EBEY-L/TR, ST3232EBTR, ADM3232EARUZ-REEL7) extend the operating temperature range to -40°C to 85°C and/or increase receiver hysteresis to 500mV, providing enhanced performance margins for demanding applications.

Q: Are all substitute parts available in the same packaging options?

A: Substitute parts are available in Cut Tape (CT) & Digi-Reel® or Tube packaging. Cut Tape & Digi-Reel® packaging is standard for high-volume production. Tube packaging is available for select parts (MAX3232EEUE+, ADM3232EARUZ). Verify packaging availability with your supplier for specific procurement requirements.

Q: Does receiver hysteresis affect circuit compatibility?

A: Receiver hysteresis determines the voltage differential required for input state transitions. The original TRS3232CPWR specifies 300mV hysteresis. Upgrade parts with 500mV hysteresis provide improved noise immunity and are functionally compatible with designs specified for 300mV hysteresis. No circuit modifications are required.

Q: Which substitute part offers the best availability?

A: ST3232EBTR from STMicroelectronics provides the highest inventory availability with 129,821 units in stock. This part is an upgrade option featuring 500mV receiver hysteresis, -40°C to 85°C operating temperature range, and active product status.

Q: Can ADM3232EARUZ-REEL7 be used in applications designed for 250kbps data rate?

A: Yes. ADM3232EARUZ-REEL7 supports 460Kbps data rate, which is backward compatible with 250kbps applications. The higher data rate capability does not affect operation at lower speeds. This part is suitable for applications requiring future bandwidth expansion while maintaining compatibility with existing 250kbps designs.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original TRS3232CPWR specifications. All parts are suitable for lead-free soldering processes and meet environmental compliance requirements.

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