SP207CT-L/TR RS232 5/3 Transceiver Equivalent & Substitute Parts

Part Overview

The SP207CT-L/TR is a full-duplex RS232 transceiver IC with 5 drivers and 3 receivers in a 24-SOIC surface mount package, manufactured by MaxLinear, Inc. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support, design updates, and procurement continuity. The SP207CT-L/TR operates at 120 Kbps data rate with a supply voltage range of 4.5V to 5.5V and is rated for 0°C to 70°C operating temperature.

Key Parameters

Parameter	SP207CT-L/TR
Manufacturer	MaxLinear, Inc.
Type	Transceiver
Protocol	RS232
Drivers/Receivers	5/3
Duplex	Full
Data Rate	120 Kbps
Supply Voltage	4.5V – 5.5V
Operating Temperature	0°C – 70°C
Package	24-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Receiver Hysteresis	500 mV
Product Status	Obsolete
Moisture Sensitivity Level	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution for the SP207CT-L/TR is determined by the following critical parameters:

Protocol & Configuration: RS232 full-duplex transceiver with 5 drivers and 3 receivers
Package & Pinout: 24-SOIC surface mount package (0.295", 7.50mm width)
Electrical Compatibility: Supply voltage range, data rate capability, and receiver hysteresis
Operating Temperature Range: Functional temperature specifications
Compliance & Status: RoHS compliance and product availability status

Substitute parts are grouped into two categories based on electrical and operational compatibility:

Category A – Direct Functional Equivalents (Active Status) Parts with identical or superior electrical specifications, active product status, and enhanced compliance ratings (MSL 1, ROHS3 compliant). These include ADM207ARZ, ADM207ARZ-REEL, ADM207EARZ, and ADM207EARZ-REEL from Analog Devices Inc., as well as MAX207CWG+, MAX207CWG+T, MAX207ECWG+, and MAX207ECWG+T from Analog Devices Inc./Maxim Integrated.

Category B – Compatible Alternatives (Obsolete Status) Parts with matching electrical specifications but obsolete product status, including MAX207CDW and MAX207CDWR from Texas Instruments. These maintain electrical compatibility but lack active manufacturer support.

Parameter Comparison

Part Number	Manufacturer	Drivers/Receivers	Data Rate	Supply Voltage	Operating Temp	Receiver Hysteresis	Package	Product Status	MSL	RoHS Status
SP207CT-L/TR	MaxLinear, Inc.	5/3	120 Kbps	4.5V – 5.5V	0°C – 70°C	500 mV	24-SOIC	Obsolete	3	Not specified
ADM207ARZ	Analog Devices Inc.	5/3	120 Kbps	4.5V – 5.5V	-40°C – 85°C	650 mV	24-SOIC	Active	1	ROHS3 Compliant
ADM207ARZ-REEL	Analog Devices Inc.	5/3	120 Kbps	4.5V – 5.5V	-40°C – 85°C	650 mV	24-SOIC	Active	1	ROHS3 Compliant
ADM207EARZ	Analog Devices Inc.	5/3	230 Kbps	4.5V – 5.5V	-40°C – 85°C	650 mV	24-SOIC	Active	1	ROHS3 Compliant
ADM207EARZ-REEL	Analog Devices Inc.	5/3	230 Kbps	4.5V – 5.5V	-40°C – 85°C	650 mV	24-SOIC	Active	1	ROHS3 Compliant
MAX207CDW	Texas Instruments	5/3	120 Kbps	4.75V – 5.25V	0°C – 70°C	500 mV	24-SOIC	Obsolete	1	ROHS3 Compliant
MAX207CDWR	Texas Instruments	5/3	120 Kbps	4.75V – 5.25V	0°C – 70°C	500 mV	24-SOIC	Obsolete	1	ROHS3 Compliant
MAX207CWG+	Analog Devices Inc./Maxim Integrated	5/3	120 Kbps	4.75V – 5.25V	0°C – 70°C	500 mV	24-SOIC	Active	1	ROHS3 Compliant
MAX207CWG+T	Analog Devices Inc./Maxim Integrated	5/3	120 Kbps	4.75V – 5.25V	0°C – 70°C	500 mV	24-SOIC	Active	1	ROHS3 Compliant
MAX207ECWG+	Analog Devices Inc./Maxim Integrated	5/3	120 Kbps	4.75V – 5.25V	0°C – 70°C	500 mV	24-SOIC	Active	1	ROHS3 Compliant
MAX207ECWG+T	Analog Devices Inc./Maxim Integrated	5/3	120 Kbps	4.75V – 5.25V	0°C – 70°C	500 mV	24-SOIC	Active	1	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: ADM207EARZ or ADM207EARZ-REEL

The ADM207EARZ series from Analog Devices Inc. provides the strongest substitution path. These parts maintain full electrical compatibility with the SP207CT-L/TR while offering superior specifications: extended operating temperature range (-40°C to 85°C), higher data rate capability (230 Kbps), improved moisture sensitivity rating (MSL 1), and active product status with ROHS3 compliance. The ADM207EARZ-REEL variant is suitable for high-volume production environments requiring tape and reel packaging.

Secondary Recommendation: MAX207CWG+ or MAX207CWG+T

The MAX207CWG+ series from Analog Devices Inc./Maxim Integrated offers direct electrical equivalence with the SP207CT-L/TR, maintaining identical data rate (120 Kbps), operating temperature range (0°C to 70°C), and receiver hysteresis (500 mV). These parts are active products with ROHS3 compliance. The MAX207CWG+T variant provides tape and reel packaging for automated assembly.

Alternative Consideration: MAX207CDW or MAX207CDWR

The MAX207CDW series from Texas Instruments maintains electrical compatibility but carries obsolete product status. These parts are suitable only for legacy system maintenance where active product support is not required. The supply voltage range is narrower (4.75V – 5.25V) compared to the SP207CT-L/TR (4.5V – 5.5V).

Packaging Selection Guidance

For manual assembly or low-volume applications, select tube-packaged variants (ADM207EARZ, MAX207CWG+, MAX207ECWG+). For automated pick-and-place assembly and high-volume production, select tape and reel variants (ADM207EARZ-REEL, MAX207CWG+T, MAX207ECWG+T).

Frequently Asked Questions (FAQ)

Q: Can ADM207ARZ be used as a direct replacement for SP207CT-L/TR?

A: Yes. The ADM207ARZ maintains identical driver/receiver configuration (5/3), protocol (RS232), package (24-SOIC), and supply voltage range (4.5V – 5.5V). It operates at the same 120 Kbps data rate and is pin-compatible. The ADM207ARZ offers extended temperature range (-40°C to 85°C) and improved compliance ratings.

Q: What is the difference between ADM207ARZ and ADM207EARZ?

A: Both parts are functionally equivalent with identical pinout and package. The primary difference is data rate: ADM207ARZ operates at 120 Kbps, while ADM207EARZ operates at 230 Kbps. For applications requiring only 120 Kbps operation, either part is suitable. For higher-speed applications, ADM207EARZ is required.

Q: Are tape and reel variants electrically identical to tube-packaged variants?

A: Yes. Tape and reel variants (designated with -REEL or +T suffix) contain identical die and electrical specifications. The packaging difference is mechanical only, affecting handling and assembly methods. Electrical performance and pin compatibility remain unchanged.

Q: Can MAX207CDW be used in new designs?

A: MAX207CDW is classified as obsolete and not recommended for new designs. While electrically compatible with SP207CT-L/TR, obsolete status indicates discontinued manufacturer support and potential future supply constraints. Active alternatives such as ADM207EARZ or MAX207CWG+ are preferred for new designs.

Q: What does MSL rating mean for component selection?

A: Moisture Sensitivity Level (MSL) indicates the component's sensitivity to moisture absorption during storage and handling. MSL 1 (unlimited shelf life) is superior to MSL 3 (168-hour limit). Components with MSL 1 rating require less stringent storage conditions and have longer usable shelf life, reducing procurement and inventory management complexity.

Q: Is the supply voltage range difference between parts critical?

A: The SP207CT-L/TR operates at 4.5V – 5.5V, while MAX207 variants operate at 4.75V – 5.25V. If your system supplies voltage outside the 4.75V – 5.25V window, MAX207 variants may not be suitable. ADM207 variants with 4.5V – 5.5V range provide broader compatibility with legacy power supplies.

Q: What is the significance of receiver hysteresis differences?

A: The SP207CT-L/TR and MAX207 variants specify 500 mV receiver hysteresis, while ADM207 variants specify 650 mV. Higher hysteresis improves noise immunity but may affect signal detection sensitivity. For applications with marginal signal levels, verify that 650 mV hysteresis does not impact system performance.

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