MAX3232CDRE4 Equivalent & Substitute Parts

Part Overview

The MAX3232CDRE4 is a 2/2 transceiver full RS232 interface IC in 16-SOIC surface mount packaging manufactured by Texas Instruments. This part is classified as obsolete, with 790 units currently in stock. The MAX3232CDRE4 operates across a 3V to 5.5V supply voltage range and supports data rates up to 250 kbps with full duplex RS232 communication. Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity, long-term availability, and supply chain planning.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX3232CDRE4
Manufacturer	Texas Instruments
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	300 mV
Data Rate	250 kbps
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the MAX3232CDRE4 are classified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Core Compatibility Parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Voltage Supply Range: 3V ~ 5.5V
Mounting Type: Surface Mount
Package Type: 16-SOIC

Substitution Categories:

MFR Recommended Substitutes maintain identical electrical specifications and are direct replacements from the same or equivalent manufacturers. These include MAX3232CDR and ADM3202 series parts.

Parametric Equivalents match all core electrical parameters but may originate from different manufacturers (TRS3232ECDR from Texas Instruments, ADM3202 series from Analog Devices Inc.).

Upgrade Parts provide enhanced specifications such as extended operating temperature ranges (-40°C to 85°C versus 0°C to 70°C) or improved data rates (460 kbps versus 250 kbps), while maintaining full RS232 2/2 transceiver functionality and 16-SOIC packaging.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Supply Voltage	Operating Temp	Receiver Hysteresis	Package	Product Status	Inventory
MAX3232CDRE4	Texas Instruments	RS232	2/2	250 kbps	3V ~ 5.5V	0°C ~ 70°C	300 mV	16-SOIC (0.154")	Obsolete	790 Pcs
MAX3232CDR	Texas Instruments	RS232	2/2	250 kbps	3V ~ 5.5V	0°C ~ 70°C	300 mV	16-SOIC (0.154")	Active	20,100 Pcs
MAX3232ECDR	Texas Instruments	RS232	2/2	250 kbps	3V ~ 5.5V	0°C ~ 70°C	300 mV	16-SOIC (0.154")	Active	22,636 Pcs
TRS3232ECDR	Texas Instruments	RS232	2/2	250 kbps	3V ~ 5.5V	0°C ~ 70°C	300 mV	16-SOIC (0.154")	Active	100,398 Pcs
SP3232EBEN-L/TR	MaxLinear, Inc.	RS232	2/2	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	300 mV	16-SOIC (0.154")	Active	35,386 Pcs
ST3232EBDR	STMicroelectronics	RS232	2/2	250 kbps	3V ~ 5.5V	-40°C ~ 85°C	500 mV	16-SOIC (0.154")	Active	17,776 Pcs
ADM3202ARNZ	Analog Devices Inc.	RS232	2/2	460 kbps	3V ~ 5.5V	-40°C ~ 85°C	400 mV	16-SOIC (0.154")	Active	4,121 Pcs
ADM3202ARNZ-REEL	Analog Devices Inc.	RS232	2/2	460 kbps	3V ~ 5.5V	-40°C ~ 85°C	400 mV	16-SOIC (0.154")	Active	44,100 Pcs
ADM3202ARNZ-REEL7	Analog Devices Inc.	RS232	2/2	460 kbps	3V ~ 5.5V	-40°C ~ 85°C	400 mV	16-SOIC (0.154")	Active	27,977 Pcs
ADM3202ARWZ	Analog Devices Inc.	RS232	2/2	460 kbps	3V ~ 5.5V	-40°C ~ 85°C	400 mV	16-SOIC (0.295")	Active	1,515 Pcs
ADM3202ARWZ-REEL	Analog Devices Inc.	RS232	2/2	460 kbps	3V ~ 5.5V	-40°C ~ 85°C	400 mV	16-SOIC (0.295")	Active	1,700 Pcs

Engineering Selection Recommendations

Direct Replacement (Same Specifications): MAX3232CDR and MAX3232ECDR are active production parts from Texas Instruments with identical electrical and thermal specifications to the MAX3232CDRE4. Both maintain the 0°C to 70°C operating temperature range, 250 kbps data rate, and 300 mV receiver hysteresis. These parts are ROHS3 compliant and carry unlimited moisture sensitivity ratings. MAX3232CDR offers the highest inventory availability at 20,100 units, while MAX3232ECDR provides 22,636 units.

Texas Instruments Alternative: TRS3232ECDR is a parametric equivalent from Texas Instruments with identical electrical specifications and the largest inventory position at 100,398 units. This part maintains full compatibility with the original MAX3232CDRE4 specifications.

Extended Temperature Range Options: SP3232EBEN-L/TR (MaxLinear, Inc.) and ST3232EBDR (STMicroelectronics) extend the operating temperature range to -40°C to 85°C while maintaining 3V to 5.5V supply voltage and 250 kbps data rate. These parts are suitable for applications requiring wider thermal operating windows. ST3232EBDR features a 500 mV receiver hysteresis compared to the original 300 mV specification.

Enhanced Data Rate Alternatives: ADM3202 series parts from Analog Devices Inc. provide 460 kbps data rate capability with extended -40°C to 85°C operating temperature range. ADM3202ARNZ-REEL offers the highest inventory at 44,100 units. These parts feature 400 mV receiver hysteresis and are available in both standard (0.154" width) and wide (0.295" width) 16-SOIC packages.

All substitute parts maintain ROHS3 compliance and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can MAX3232CDR directly replace MAX3232CDRE4 in existing designs? A: Yes. MAX3232CDR is an active production equivalent with identical electrical specifications, supply voltage range (3V to 5.5V), data rate (250 kbps), receiver hysteresis (300 mV), and 16-SOIC packaging. The primary difference is product status: MAX3232CDRE4 is obsolete while MAX3232CDR is active production.

Q: What is the difference between MAX3232CDR and MAX3232ECDR? A: Both parts are parametric equivalents with identical specifications. MAX3232ECDR has higher inventory availability (22,636 units versus 20,100 units). Selection between these parts depends on supplier availability and packaging preferences (Cut Tape & Digi-Reel).

Q: Why would I choose ADM3202ARNZ-REEL over MAX3232CDR? A: ADM3202ARNZ-REEL provides enhanced specifications: 460 kbps data rate (versus 250 kbps), extended operating temperature range (-40°C to 85°C versus 0°C to 70°C), and significantly higher inventory (44,100 units). These upgrades are beneficial for applications requiring higher communication speeds or operation in wider temperature environments.

Q: Are there package width differences among substitute parts? A: Yes. Most substitute parts use standard 16-SOIC packaging with 0.154" width. ADM3202ARWZ and ADM3202ARWZ-REEL use wide 16-SOIC packaging with 0.295" width. Verify PCB layout compatibility before selecting wide-package variants.

Q: What is the significance of receiver hysteresis differences? A: Receiver hysteresis affects noise immunity and signal transition characteristics. The original MAX3232CDRE4 specifies 300 mV hysteresis. Most substitutes maintain this specification. ST3232EBDR features 500 mV hysteresis, providing enhanced noise immunity at the cost of slightly slower signal transitions. ADM3202 series parts specify 400 mV hysteresis.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance certification, consistent with the original MAX3232CDRE4. Moisture sensitivity levels range from 1 (Unlimited) to 3 (168 Hours), with most parts rated MSL 1.

Q: Which substitute offers the best inventory availability? A: TRS3232ECDR provides the highest inventory at 100,398 units with identical specifications to the original part. ADM3202ARNZ-REEL offers 44,100 units with enhanced data rate and temperature specifications.

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