MAX207CWG Equivalent & Substitute Parts

Part Overview

The MAX207CWG is a full-duplex RS232 transceiver with 5 drivers and 3 receivers, housed in a 24-SOIC surface mount package. This interface IC operates at 4.75V to 5.25V with a 120 kbps data rate and 500 mV receiver hysteresis. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring this functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX207CWG
Manufacturer	Analog Devices Inc./Maxim Integrated
Type	Transceiver
Protocol	RS232
Number of Drivers/Receivers	5/3
Duplex	Full
Data Rate	120 kbps
Voltage - Supply	4.75V ~ 5.25V
Operating Temperature	0°C ~ 70°C
Package / Case	24-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Receiver Hysteresis	500 mV
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the MAX207CWG is determined by the following critical parameters:

Protocol: RS232
Number of Drivers/Receivers: 5/3
Duplex: Full
Package / Case: 24-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount
Data Rate: 120 kbps minimum
Voltage - Supply: 4.75V ~ 5.25V compatibility
Operating Temperature: 0°C ~ 70°C minimum range

Substitute parts are grouped into three categories based on parameter alignment:

Parametric Equivalents maintain identical electrical specifications and operating conditions as the original part.

Direct Manufacturer Alternatives provide the same functional configuration with minor parameter variations (receiver hysteresis, data rate) that remain within acceptable operating margins.

MFR Recommended Alternatives offer enhanced specifications including extended temperature ranges and higher data rates, suitable for applications requiring improved performance or wider operating conditions.

Parameter Comparison

Part Number	Manufacturer	Protocol	Drivers/Receivers	Data Rate	Supply Voltage	Operating Temp	Receiver Hysteresis	Product Status	RoHS Status
MAX207CWG	Analog Devices Inc./Maxim	RS232	5/3	120 kbps	4.75V ~ 5.25V	0°C ~ 70°C	500 mV	Obsolete	RoHS non-compliant
MAX207CWG+	Analog Devices Inc./Maxim	RS232	5/3	120 kbps	4.75V ~ 5.25V	0°C ~ 70°C	500 mV	Active	ROHS3 Compliant
MAX207ECWG+	Analog Devices Inc./Maxim	RS232	5/3	120 kbps	4.75V ~ 5.25V	0°C ~ 70°C	500 mV	Active	ROHS3 Compliant
ADM237LJRZ	Analog Devices Inc.	RS232	5/3	120 kbps	4.75V ~ 5.25V	0°C ~ 70°C	650 mV	Active	ROHS3 Compliant
ADM207ARZ	Analog Devices Inc.	RS232	5/3	120 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	650 mV	Active	ROHS3 Compliant
ADM207ARZ-REEL	Analog Devices Inc.	RS232	5/3	120 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	650 mV	Active	ROHS3 Compliant
ADM207EARZ	Analog Devices Inc.	RS232	5/3	230 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	650 mV	Active	ROHS3 Compliant
ADM207EARZ-REEL	Analog Devices Inc.	RS232	5/3	230 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	650 mV	Active	ROHS3 Compliant
ADM237LJRZ-REEL	Analog Devices Inc.	RS232	5/3	120 kbps	4.75V ~ 5.25V	0°C ~ 70°C	650 mV	Active	ROHS3 Compliant
MAX207CDWR	Texas Instruments	RS232	5/3	120 kbps	4.75V ~ 5.25V	0°C ~ 70°C	500 mV	Obsolete	ROHS3 Compliant
MAX207IDW	Texas Instruments	RS232	5/3	120 kbps	4.75V ~ 5.25V	-40°C ~ 85°C	500 mV	Obsolete	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Active Status, RoHS Compliant):

MAX207CWG+ and MAX207ECWG+ are parametric equivalents with identical electrical specifications and operating conditions. Both are active products with ROHS3 compliance, making them suitable for new designs and legacy system support. These parts maintain the original 500 mV receiver hysteresis and 120 kbps data rate within the 4.75V to 5.25V supply range.

For Extended Operating Range Applications:

ADM207ARZ, ADM207ARZ-REEL, ADM207EARZ, and ADM207EARZ-REEL provide wider supply voltage (4.5V ~ 5.5V) and extended temperature range (-40°C ~ 85°C). ADM207EARZ and ADM207EARZ-REEL additionally support 230 kbps data rate. These parts are active with ROHS3 compliance and are recommended when applications require operation beyond the original 0°C to 70°C temperature specification.

For Tape & Reel Packaging:

ADM207ARZ-REEL, ADM207EARZ-REEL, and ADM237LJRZ-REEL are available in Tape & Reel (TR) packaging for high-volume manufacturing. These maintain full compatibility with the original functional specification while providing manufacturing convenience.

Obsolete Alternatives (Not Recommended for New Designs):

MAX207CDWR and MAX207IDW are obsolete products. While MAX207CDWR maintains identical electrical specifications to the original part, and MAX207IDW offers extended temperature range, both are end-of-life and should not be selected for new designs.

Frequently Asked Questions (FAQ)

Q: Can MAX207CWG+ directly replace MAX207CWG in existing designs?

A: Yes. MAX207CWG+ is a parametric equivalent with identical electrical specifications, operating temperature range, and supply voltage requirements. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Pin configuration and package dimensions are identical.

Q: What is the difference between ADM207ARZ and ADM207EARZ?

A: Both parts share the same supply voltage range (4.5V ~ 5.5V) and operating temperature range (-40°C ~ 85°C). The primary difference is data rate: ADM207ARZ supports 120 kbps while ADM207EARZ supports 230 kbps. Both have 650 mV receiver hysteresis compared to the original 500 mV.

Q: Are Tape & Reel versions functionally identical to tube-packaged versions?

A: Yes. Tape & Reel (TR) packaging provides the same electrical and functional performance as tube packaging. The difference is packaging format for manufacturing and assembly processes. ADM207ARZ-REEL and ADM207EARZ-REEL are functionally identical to ADM207ARZ and ADM207EARZ respectively.

Q: Can I use a part with 650 mV receiver hysteresis instead of 500 mV?

A: The 650 mV receiver hysteresis in ADM207 and ADM237 series parts is a higher threshold specification. This affects noise immunity and signal detection margins. Substitution is application-dependent and requires verification that the higher hysteresis does not impact system performance in your specific RS232 communication environment.

Q: What is the significance of the extended temperature range in ADM207ARZ?

A: ADM207ARZ operates from -40°C to 85°C compared to the original 0°C to 70°C range. This extended range is suitable for industrial, automotive, and harsh environment applications. The part also supports a wider supply voltage range (4.5V ~ 5.5V), providing greater tolerance to power supply variations.

Q: Why is MAX207CDWR listed as obsolete despite ROHS3 compliance?

A: Product status (active vs. obsolete) is determined by manufacturer production and support status, independent of RoHS compliance. MAX207CDWR has been discontinued by the manufacturer and should not be selected for new designs, even though it meets current environmental standards.

Q: Is the 24-SOIC package identical across all substitute parts?

A: Yes. All substitute parts use the 24-SOIC (0.295", 7.50mm Width) package with identical pin configuration and physical dimensions. This ensures direct PCB compatibility without layout modifications.

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