TRS3232ECPW RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The TRS3232ECPW is a full-duplex RS232 transceiver manufactured by Texas Instruments, featuring 2 drivers and 2 receivers in a 16-TSSOP surface mount package. This part is classified as obsolete, with 2,651 units currently in stock. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for new designs and long-term supply chain continuity. All substitute parts maintain the same functional protocol, electrical specifications, and mechanical packaging requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	TRS3232ECPW
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	250 kbps
Voltage Supply Range	3V to 5.5V
Operating Temperature	0°C to 70°C
Package / Case	16-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the TRS3232ECPW is determined by strict adherence to the following parameters:

Critical Parameters for Direct Substitution:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Package / Case: 16-TSSOP (0.173", 4.40mm Width)
Voltage Supply Range: 3V to 5.5V
Mounting Type: Surface Mount

Allowable Parameter Variations:

Receiver Hysteresis: 300 mV or 500 mV (both acceptable)
Data Rate: 250 kbps or higher (backward compatible)
Operating Temperature: Extended ranges (-40°C to 85°C) are acceptable upgrades
Product Status: Active parts are preferred over obsolete parts
Manufacturer: Different manufacturers acceptable if all critical parameters match

Substitute parts are grouped into three categories: parametric equivalents (matching all electrical specifications), upgrades (enhanced specifications with extended temperature range or higher data rate), and manufacturer-recommended alternatives (active production parts with superior performance characteristics).

Parameter Comparison

Part Number	Manufacturer	Product Status	Receiver Hysteresis	Data Rate	Operating Temperature	Package	Inventory
TRS3232ECPW	Texas Instruments	Obsolete	300 mV	250 kbps	0°C to 70°C	16-TSSOP	2,651 Pcs
MAX3232CPW	Texas Instruments	Obsolete	300 mV	250 kbps	0°C to 70°C	16-TSSOP	3,100 Pcs
MAX3232ECPW	Texas Instruments	Obsolete	300 mV	250 kbps	0°C to 70°C	16-TSSOP	3,200 Pcs
MAX3232EEUE+	Analog Devices Inc./Maxim Integrated	Active	500 mV	250 kbps	-40°C to 85°C	16-TSSOP	2,100 Pcs
MAX3232EEUE+T	Analog Devices Inc./Maxim Integrated	Active	500 mV	250 kbps	-40°C to 85°C	16-TSSOP	30,300 Pcs
SP3232EBEY-L/TR	MaxLinear, Inc.	Active	300 mV	250 kbps	-40°C to 85°C	16-TSSOP	30,194 Pcs
ST3232EBTR	STMicroelectronics	Active	500 mV	250 kbps	-40°C to 85°C	16-TSSOP	129,821 Pcs
ADM3232EARUZ	Analog Devices Inc.	Active	500 mV	460 kbps	-40°C to 85°C	16-TSSOP	1,340 Pcs
ADM3232EARUZ-REEL7	Analog Devices Inc.	Active	500 mV	460 kbps	-40°C to 85°C	16-TSSOP	30,400 Pcs
ICL3232CVZ-T	Renesas Electronics Corporation	Active	300 mV	250 kbps	0°C to 70°C	16-TSSOP	1,424 Pcs
ICL3232ECAZ	Renesas Electronics Corporation	Active	500 mV	250 kbps	0°C to 70°C	16-SSOP	1,270 Pcs

Engineering Selection Recommendations

For Direct Replacement (Obsolete to Obsolete): MAX3232CPW and MAX3232ECPW are parametric equivalents to TRS3232ECPW, maintaining identical electrical specifications and operating temperature range. Both parts are obsolete but available in inventory.

For Active Production Designs (Recommended): Parts with active product status are preferred for new designs and long-term supply chain assurance. SP3232EBEY-L/TR, ST3232EBTR, MAX3232EEUE+T, ADM3232EARUZ-REEL7, and ICL3232CVZ-T all meet the critical substitution parameters while offering active manufacturing status.

For Extended Temperature Range Applications: MAX3232EEUE+T, SP3232EBEY-L/TR, ST3232EBTR, ADM3232EARUZ, and ADM3232EARUZ-REEL7 provide operating temperature ranges of -40°C to 85°C, compared to the original 0°C to 70°C specification.

For Higher Data Rate Requirements: ADM3232EARUZ and ADM3232EARUZ-REEL7 support 460 kbps data rate, exceeding the 250 kbps specification of the TRS3232ECPW while maintaining full backward compatibility.

Package Consideration: ICL3232ECAZ uses a 16-SSOP package (0.209", 5.30mm Width) instead of 16-TSSOP, requiring PCB layout modification and is not recommended as a direct substitute without design review.

Compliance and Certifications: All listed substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification, matching the original part's regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX3232EEUE+T directly replace TRS3232ECPW on existing PCBs? A: Yes. MAX3232EEUE+T maintains the same 16-TSSOP package footprint, pin configuration, and all critical electrical parameters (RS232 protocol, 2/2 drivers/receivers, full duplex, 3V to 5.5V supply). The extended operating temperature range (-40°C to 85°C) and higher receiver hysteresis (500 mV vs. 300 mV) are compatible upgrades.

Q: What is the difference between SP3232EBEY-L/TR and ST3232EBTR? A: Both are active production parts with identical critical parameters. SP3232EBEY-L/TR is manufactured by MaxLinear with 300 mV receiver hysteresis. ST3232EBTR is manufactured by STMicroelectronics with 500 mV receiver hysteresis. ST3232EBTR has significantly higher inventory availability (129,821 Pcs vs. 30,194 Pcs).

Q: Why is ADM3232EARUZ listed as a substitute if it has a higher data rate? A: Higher data rate (460 kbps vs. 250 kbps) is a backward-compatible enhancement. The ADM3232EARUZ maintains all other critical parameters and can operate at the original 250 kbps specification. This makes it suitable for applications requiring future bandwidth expansion.

Q: Can ICL3232ECAZ be used as a substitute? A: ICL3232ECAZ uses a different package (16-SSOP vs. 16-TSSOP), requiring PCB layout modification. While electrically compatible, this substitution requires design review and is not recommended for direct replacement without engineering validation.

Q: What is the significance of the "T" suffix in MAX3232EEUE+T and ADM3232EARUZ-REEL7? A: The "T" suffix indicates Cut Tape (CT) & Digi-Reel packaging, suitable for automated assembly processes. Parts without this suffix use Tube packaging. Both packaging formats are compatible with standard component handling; selection depends on assembly line requirements.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original TRS3232ECPW.

Q: Which substitute offers the best inventory availability? A: ST3232EBTR provides the highest inventory level at 129,821 Pcs, followed by MAX3232EEUE+T at 30,300 Pcs and ADM3232EARUZ-REEL7 at 30,400 Pcs.

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