MAX3232CDWG4 Equivalent & Substitute Parts

Part Overview

The MAX3232CDWG4 is a 2/2 transceiver full RS232 interface IC in 16-SOIC surface mount packaging manufactured by Texas Instruments. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and production requirements. The MAX3232 series provides full-duplex RS232 communication with supply voltage range of 3V to 5.5V and operating temperature range of 0°C to 70°C.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX3232CDWG4
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 (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MAX3232CDWG4 is determined by the following critical parameters:

Protocol: RS232 full-duplex transceiver
Number of Drivers/Receivers: 2/2 configuration
Package Type: 16-SOIC surface mount
Supply Voltage Range: 3V ~ 5.5V
Data Rate: Minimum 250 kbps
RoHS Compliance: ROHS3 Compliant
Moisture Sensitivity: MSL 1

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

MFR Recommended Substitutes - Texas Instruments parts with identical electrical specifications and packaging, differing only in product status or packaging format.

Parametric Equivalents - Parts with identical core electrical parameters but potentially different receiver hysteresis or operating temperature ranges.

Direct Alternatives - Parts from Analog Devices Inc./Maxim Integrated with enhanced specifications (wider operating temperature, higher data rates) that maintain full compatibility with the original application requirements.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Receiver Hysteresis	Operating Temperature	Package Width	Product Status
MAX3232CDWG4	Texas Instruments	RS232	2/2	250 kbps	300 mV	0°C ~ 70°C	7.50mm	Discontinued
MAX3232CDW	Texas Instruments	RS232	2/2	250 kbps	300 mV	0°C ~ 70°C	7.50mm	Last Time Buy
MAX3232ECDW	Texas Instruments	RS232	2/2	250 kbps	300 mV	0°C ~ 70°C	7.50mm	Last Time Buy
MAX3232EEWE+	Analog Devices Inc./Maxim Integrated	RS232	2/2	250 kbps	500 mV	-40°C ~ 85°C	7.50mm	Active
MAX3232EEWE+T	Analog Devices Inc./Maxim Integrated	RS232	2/2	250 kbps	500 mV	-40°C ~ 85°C	7.50mm	Active
ADM3202ARNZ	Analog Devices Inc.	RS232	2/2	460 kbps	400 mV	-40°C ~ 85°C	3.90mm	Active
ADM3202ARNZ-REEL	Analog Devices Inc.	RS232	2/2	460 kbps	400 mV	-40°C ~ 85°C	3.90mm	Active
ADM3202ARNZ-REEL7	Analog Devices Inc.	RS232	2/2	460 kbps	400 mV	-40°C ~ 85°C	3.90mm	Active
ADM3202ARWZ	Analog Devices Inc.	RS232	2/2	460 kbps	400 mV	-40°C ~ 85°C	7.50mm	Active
ADM3202ARWZ-REEL	Analog Devices Inc.	RS232	2/2	460 kbps	400 mV	-40°C ~ 85°C	7.50mm	Active
ADM3202ARWZ-REEL7	Analog Devices Inc.	RS232	2/2	460 kbps	400 mV	-40°C ~ 85°C	7.50mm	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications)

MAX3232CDW and MAX3232ECDW are direct substitutes from Texas Instruments with identical electrical parameters and 7.50mm package width. Both are ROHS3 compliant with MSL 1 rating. These parts maintain the original 0°C to 70°C operating temperature range and 300 mV receiver hysteresis. Selection between these two depends on packaging format availability (Tube vs. Cut Tape & Digi-Reel).

For Extended Temperature Range Applications

MAX3232EEWE+ and MAX3232EEWE+T from Analog Devices Inc./Maxim Integrated extend the operating temperature range to -40°C to 85°C while maintaining identical data rate and supply voltage specifications. These parts feature 500 mV receiver hysteresis and are currently in active production status. The +T variant includes Cut Tape & Digi-Reel packaging option.

For Higher Data Rate Requirements

ADM3202 series parts from Analog Devices Inc. provide 460 kbps data rate capability compared to the original 250 kbps specification. Available in both 3.90mm (narrow) and 7.50mm (wide) package widths. All ADM3202 variants feature -40°C to 85°C operating temperature range and 400 mV receiver hysteresis. Multiple packaging options (Tube, Cut Tape & Digi-Reel, Tape & Reel) are available with high inventory levels.

Compliance and Certification

All substitute parts maintain ROHS3 compliance and MSL 1 moisture sensitivity rating. All parts are REACH unaffected and carry EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can MAX3232CDW replace MAX3232CDWG4 directly?

A: Yes. MAX3232CDW is a direct substitute with identical electrical specifications, supply voltage range, data rate, and receiver hysteresis. The only difference is packaging format (Tube vs. standard packaging) and product status (Last Time Buy vs. Discontinued).

Q: What is the difference between MAX3232EEWE+ and ADM3202ARWZ?

A: Both are active production parts with 7.50mm package width and ROHS3 compliance. MAX3232EEWE+ maintains the original 250 kbps data rate with 500 mV hysteresis. ADM3202ARWZ offers higher 460 kbps data rate with 400 mV hysteresis. Both support -40°C to 85°C operating temperature range.

Q: Are ADM3202 parts with 3.90mm width compatible with MAX3232CDWG4 PCB layouts?

A: ADM3202 parts with 3.90mm package width (ARNZ variants) have different physical dimensions than the original 7.50mm width. PCB layout compatibility depends on specific footprint design. ADM3202ARWZ variants with 7.50mm width maintain identical package dimensions.

Q: What is the significance of receiver hysteresis differences?

A: Receiver hysteresis affects noise immunity and signal transition characteristics. The original MAX3232CDWG4 features 300 mV hysteresis. Substitutes with 400 mV or 500 mV hysteresis provide enhanced noise immunity but may affect signal timing in noise-sensitive applications.

Q: Which substitute offers the best long-term availability?

A: ADM3202ARNZ-REEL and ADM3202ARWZ-REEL from Analog Devices Inc. show the highest inventory levels (44,100 and 1,700 units respectively) and active production status, providing the best long-term supply assurance.

Q: Are packaging format differences (Tube vs. Cut Tape & Digi-Reel) functionally significant?

A: No. Packaging format differences affect handling, storage, and automated assembly processes but do not impact electrical performance or functional compatibility. Selection depends on manufacturing process requirements.

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