MAX3232CPWR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The MAX3232CPWR is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments, housed in a 16-TSSOP surface mount package. This interface IC operates across a 3V to 5.5V supply range and supports data rates up to 250 kbps with a receiver hysteresis of 300 mV. The part is currently active in production with 25,200 units in stock and carries ROHS3 compliance certification.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when enhanced operating temperature ranges or performance specifications are needed for specific application requirements.

Key Parameters

Parameter	MAX3232CPWR Specification
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
Receiver Hysteresis	300 mV
Package Type	16-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution of the MAX3232CPWR is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Direct Substitution:

RS232 protocol compliance
2/2 driver/receiver configuration
Full-duplex operation
16-TSSOP package format
3V to 5.5V supply voltage compatibility
Surface mount mounting type
ROHS3 compliance

Parameters Allowing Extended Substitution:

Operating temperature range (extended ranges acceptable for applications not requiring the full 0°C to 70°C specification)
Receiver hysteresis (300 mV to 500 mV acceptable within RS232 specification tolerances)
Data rate (250 kbps minimum; higher rates acceptable)
Packaging format (Cut Tape/Digi-Reel or Tube acceptable based on procurement requirements)

Substitute parts are grouped into three categories: parametric equivalents (identical electrical specifications), upgrades (enhanced operating temperature or performance), and manufacturer-recommended alternatives (different base product numbers with compatible functionality).

Parameter Comparison

Part Number	Manufacturer	Drivers/Receivers	Data Rate	Receiver Hysteresis	Operating Temperature	Supply Voltage	Package	Product Status	Inventory
MAX3232CPWR	Texas Instruments	2/2	250 kbps	300 mV	0°C to 70°C	3V to 5.5V	16-TSSOP	Active	25,200
MAX3232CPWRG4	Texas Instruments	2/2	250 kbps	300 mV	0°C to 70°C	3V to 5.5V	16-TSSOP	Discontinued at DiGi Electronics	3,100
MAX3232ECPWR	Texas Instruments	2/2	250 kbps	300 mV	0°C to 70°C	3V to 5.5V	16-TSSOP	Active	75,100
TRS3232ECPWR	Texas Instruments	2/2	250 kbps	300 mV	0°C to 70°C	3V to 5.5V	16-TSSOP	Active	75,750
MAX3232EEUE+	Analog Devices Inc./Maxim Integrated	2/2	250 kbps	500 mV	-40°C to 85°C	3V to 5.5V	16-TSSOP	Active	2,100
MAX3232EEUE+T	Analog Devices Inc./Maxim Integrated	2/2	250 kbps	500 mV	-40°C to 85°C	3V to 5.5V	16-TSSOP	Active	30,300
SP3232EBEY-L/TR	MaxLinear, Inc.	2/2	250 kbps	300 mV	-40°C to 85°C	3V to 5.5V	16-TSSOP	Active	30,194
ST3232EBTR	STMicroelectronics	2/2	250 kbps	500 mV	-40°C to 85°C	3V to 5.5V	16-TSSOP	Active	129,821
ADM3202ARUZ	Analog Devices Inc.	2/2	460 kbps	400 mV	-40°C to 85°C	3V to 5.5V	16-TSSOP	Active	23,808
ADM3202ARUZ-REEL	Analog Devices Inc.	2/2	460 kbps	400 mV	-40°C to 85°C	3V to 5.5V	16-TSSOP	Active	25,400
ADM3202ARUZ-REEL7	Analog Devices Inc.	2/2	460 kbps	400 mV	-40°C to 85°C	3V to 5.5V	16-TSSOP	Active	20,200

Engineering Selection Recommendations

Parametric Equivalents (Direct Replacement): MAX3232ECPWR and TRS3232ECPWR maintain identical electrical specifications to the MAX3232CPWR. Both are active products with higher inventory availability. MAX3232ECPWR offers 75,100 units in stock, while TRS3232ECPWR provides 75,750 units. Both carry ROHS3 compliance and are suitable for applications requiring the 0°C to 70°C operating range.

Upgrade Options with Extended Temperature Range: MAX3232EEUE+T, SP3232EBEY-L/TR, and ST3232EBTR extend the operating temperature range to -40°C to 85°C, accommodating industrial and automotive applications. ST3232EBTR from STMicroelectronics offers the highest inventory level at 129,821 units. These parts maintain 2/2 full-duplex RS232 functionality and ROHS3 compliance. The receiver hysteresis increases to 500 mV for MAX3232EEUE+T and ST3232EBTR, while SP3232EBEY-L/TR maintains 300 mV hysteresis.

Manufacturer-Recommended Alternatives: ADM3202ARUZ, ADM3202ARUZ-REEL, and ADM3202ARUZ-REEL7 from Analog Devices Inc. provide enhanced data rate performance at 460 kbps with 400 mV receiver hysteresis. These parts support the extended -40°C to 85°C temperature range and maintain full RS232 2/2 transceiver functionality. The REEL variants accommodate tape-and-reel packaging requirements.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and 16-TSSOP package format compatibility with the original MAX3232CPWR design.

Frequently Asked Questions (FAQ)

Q: Can MAX3232ECPWR directly replace MAX3232CPWR in existing designs? A: Yes. MAX3232ECPWR is a parametric equivalent with identical electrical specifications: 2/2 RS232 transceiver, 250 kbps data rate, 300 mV receiver hysteresis, 3V to 5.5V supply, and 0°C to 70°C operating temperature. The 16-TSSOP package format is identical. No design changes are required.

Q: What is the difference between MAX3232EEUE+T and MAX3232CPWR? A: MAX3232EEUE+T extends the operating temperature range from 0°C to 70°C to -40°C to 85°C and increases receiver hysteresis from 300 mV to 500 mV. Data rate, supply voltage, package format, and driver/receiver configuration remain identical. This upgrade is suitable for applications requiring wider temperature operation.

Q: Why would I select ST3232EBTR over MAX3232CPWR? A: ST3232EBTR from STMicroelectronics offers the highest inventory availability at 129,821 units. It provides extended temperature operation (-40°C to 85°C), 500 mV receiver hysteresis, and maintains identical 2/2 RS232 transceiver functionality in the 16-TSSOP package. Selection depends on supply chain requirements and temperature specifications.

Q: Are ADM3202 parts compatible with MAX3232CPWR applications? A: ADM3202ARUZ variants are manufacturer-recommended alternatives with enhanced performance. They maintain 2/2 RS232 transceiver functionality, 3V to 5.5V supply, and 16-TSSOP packaging. The primary differences are increased data rate (460 kbps vs. 250 kbps), 400 mV receiver hysteresis, and extended -40°C to 85°C temperature range. These enhancements make ADM3202 suitable for higher-speed or wider-temperature applications.

Q: What packaging options are available for substitute parts? A: Substitute parts are available in Cut Tape (CT) & Digi-Reel® format or Tube packaging. MAX3232EEUE+ is supplied in Tube format, while MAX3232EEUE+T, SP3232EBEY-L/TR, ST3232EBTR, and ADM3202ARUZ-REEL variants use Cut Tape & Digi-Reel® format. ADM3202ARUZ is available in Tube format. Packaging selection depends on procurement and assembly requirements.

Q: Do all substitute parts meet RoHS compliance? A: Yes. All listed substitute parts carry ROHS3 compliance certification and maintain MSL 1 (Unlimited) moisture sensitivity level, matching the original MAX3232CPWR specifications.

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