MAX202CDWR RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The MAX202CDWR is a 2/2 full-duplex RS232 transceiver manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This component is classified as obsolete, indicating that direct procurement may face availability constraints. Identifying equivalent and substitute parts ensures design continuity and supply chain reliability for applications requiring RS232 serial communication interfaces.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX202CDWR
Manufacturer	Texas Instruments
Product Status	Obsolete
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Receiver Hysteresis	500 mV
Data Rate	120 Kbps
Voltage - Supply	4.5V ~ 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 MAX202CDWR is determined by strict equivalence across the following critical parameters:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Receiver Hysteresis: 500 mV
Data Rate: 120 Kbps minimum
Voltage Supply Range: 4.5V ~ 5.5V
Package / Case: 16-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Substitute parts are categorized as follows:

MFR Recommended (Active Status): Parts with active product status from the original manufacturer, offering improved operating temperature ranges and extended lifecycle support.

Parametric Equivalent (Obsolete Status): Parts maintaining identical electrical and mechanical specifications but with obsolete status, suitable for legacy system maintenance.

Direct Equivalent (Active Status): Parts with identical base product numbers and specifications, available in alternative packaging formats.

Upgrade Options (Active Status): Parts with enhanced performance characteristics, including higher data rates or extended temperature ranges, while maintaining full backward compatibility.

Alternative Manufacturer Options (Active Status): Parts from alternative manufacturers meeting all electrical and mechanical requirements with active product status.

Parameter Comparison

Part Number	Manufacturer	Product Status	Drivers/Receivers	Data Rate	Operating Temp	Receiver Hysteresis	Packaging	Inventory
MAX202CDWR	Texas Instruments	Obsolete	2/2	120 Kbps	0°C ~ 70°C	500 mV	Cut Tape (CT)	5778 Pcs
MAX202IDWR	Texas Instruments	Active	2/2	120 Kbps	-40°C ~ 85°C	500 mV	Cut Tape (CT)	4767 Pcs
MAX232DWR	Texas Instruments	Obsolete	2/2	120 Kbps	0°C ~ 70°C	500 mV	Cut Tape (CT)	6121 Pcs
TRS202ECDWR	Texas Instruments	Obsolete	2/2	120 Kbps	0°C ~ 70°C	500 mV	Cut Tape (CT)	6843 Pcs
TRS232DWR	Texas Instruments	Obsolete	2/2	120 Kbps	0°C ~ 70°C	500 mV	Cut Tape (CT)	2329 Pcs
MAX202ECWE+	Analog Devices Inc./Maxim Integrated	Active	2/2	120 Kbps	0°C ~ 70°C	500 mV	Tube	2200 Pcs
HIN202EIBZ	Renesas Electronics Corporation	Active	2/2	230 Kbps	-40°C ~ 85°C	500 mV	Tube	1512 Pcs
HIN202EIBZ-T	Renesas Electronics Corporation	Active	2/2	230 Kbps	-40°C ~ 85°C	500 mV	Tape & Reel (TR)	2098 Pcs
MAX202EEWE+T	Analog Devices Inc./Maxim Integrated	Active	2/2	120 Kbps	-40°C ~ 85°C	500 mV	Tape & Reel (TR)	4052 Pcs
ADM1181AARWZ	Analog Devices Inc.	Active	2/2	230 Kbps	-40°C ~ 85°C	650 mV	Tube	6390 Pcs
ADM1181AARWZ-REEL	Analog Devices Inc.	Active	2/2	230 Kbps	-40°C ~ 85°C	650 mV	Tape & Reel (TR)	1248 Pcs

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): MAX202IDWR is the primary recommended substitute. It maintains all electrical and mechanical specifications of the MAX202CDWR while offering active product status, extended operating temperature range (-40°C ~ 85°C), and superior lifecycle support from Texas Instruments.

For Legacy System Maintenance: MAX232DWR, TRS202ECDWR, and TRS232DWR provide parametric equivalence with identical electrical characteristics and operating temperature ranges. These parts are suitable for applications where the original operating temperature specification (0°C ~ 70°C) is sufficient.

For Active Product Status with Temperature Extension: MAX202EEWE+T offers active product status with extended operating temperature range (-40°C ~ 85°C) while maintaining all electrical specifications. This part is available in Tape & Reel packaging format.

For Enhanced Performance (Higher Data Rate): HIN202EIBZ and HIN202EIBZ-T from Renesas Electronics provide 230 Kbps data rate capability with extended operating temperature range (-40°C ~ 85°C) and active product status. These parts are suitable for applications requiring higher communication speeds while maintaining full backward compatibility.

For Alternative Manufacturer Options: ADM1181AARWZ and ADM1181AARWZ-REEL from Analog Devices Inc. provide 230 Kbps data rate with extended operating temperature range and active product status. The receiver hysteresis specification (650 mV) differs from the original part (500 mV), which may affect noise immunity characteristics in specific applications.

All substitute parts maintain ROHS3 compliance and are suitable for surface mount assembly in 16-SOIC packages.

Frequently Asked Questions (FAQ)

Q: Can MAX202IDWR be used as a direct replacement for MAX202CDWR? A: Yes. MAX202IDWR maintains identical electrical and mechanical specifications, including 2/2 drivers/receivers, 120 Kbps data rate, 500 mV receiver hysteresis, and 16-SOIC package. The extended operating temperature range (-40°C ~ 85°C) provides additional environmental capability.

Q: What is the difference between parametric equivalent parts and direct equivalents? A: Parametric equivalent parts (MAX232DWR, TRS202ECDWR, TRS232DWR) meet all electrical and mechanical requirements but carry obsolete product status. Direct equivalents (MAX202IDWR, MAX202ECWE+) maintain active product status from the original manufacturer, ensuring ongoing support and availability.

Q: Are HIN202EIBZ and ADM1181AARWZ fully backward compatible? A: Both parts maintain the 2/2 driver/receiver configuration, full-duplex RS232 protocol, and 16-SOIC package. HIN202EIBZ offers 230 Kbps data rate with 500 mV receiver hysteresis. ADM1181AARWZ offers 230 Kbps data rate with 650 mV receiver hysteresis. The higher receiver hysteresis in ADM1181AARWZ may affect noise immunity in applications with marginal signal quality.

Q: What packaging options are available for substitute parts? A: Substitute parts are available in Cut Tape (CT), Tube, and Tape & Reel (TR) formats. MAX202IDWR and MAX232DWR are available in Cut Tape. MAX202ECWE+ is available in Tube. HIN202EIBZ-T, MAX202EEWE+T, and ADM1181AARWZ-REEL are available in Tape & Reel format.

Q: Does the operating temperature range affect substitution suitability? A: Operating temperature range affects application suitability based on environmental requirements. The original MAX202CDWR operates 0°C ~ 70°C. Substitute parts with extended ranges (-40°C ~ 85°C) provide additional environmental capability without reducing performance within the original specification range.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance, consistent with the original MAX202CDWR specification.

Q: What is the significance of receiver hysteresis in RS232 transceivers? A: Receiver hysteresis affects noise immunity and signal detection reliability. The original MAX202CDWR specifies 500 mV hysteresis. Most substitute parts maintain this specification. ADM1181AARWZ specifies 650 mV hysteresis, which provides enhanced noise immunity but may affect detection of marginal signals.

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