SP232ECP-L RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SP232ECP-L is a 2/2 full-duplex RS232 transceiver manufactured by MaxLinear, Inc., housed in a 16-pin DIP package for through-hole mounting. This component operates at 4.5V to 5.5V supply voltage with a data rate of 240 kbps and receiver hysteresis of 500 mV across an operating temperature range of 0°C to 70°C. The part is currently classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility while offering improved availability and extended product lifecycle support.

Key Parameters

Parameter	SP232ECP-L
Manufacturer	MaxLinear, Inc.
Protocol	RS232
Number of Drivers/Receivers	2/2
Duplex	Full
Data Rate	240 kbps
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Mounting Type	Through Hole
Package / Case	16-DIP (0.300", 7.62mm)
Receiver Hysteresis	500 mV
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the SP232ECP-L is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Protocol: RS232
Number of Drivers/Receivers: 2/2
Duplex: Full
Voltage Supply Range: 4.5V ~ 5.5V (minimum requirement)
Mounting Type: Through Hole
Package: 16-DIP (0.300", 7.62mm)

Secondary Compatibility Parameters:

Data Rate: Minimum 240 kbps
Receiver Hysteresis: 400 mV to 650 mV acceptable range
Operating Temperature: Must encompass 0°C ~ 70°C minimum

Substitute parts are grouped into two categories: direct pin-compatible replacements from active manufacturers (Analog Devices Inc., Renesas Electronics Corporation) and functionally equivalent alternatives that meet or exceed the electrical specifications of the original component.

Parameter Comparison

Part Number	Manufacturer	Package	Mounting	Data Rate	Voltage Supply	Operating Temp	Receiver Hysteresis	Product Status
SP232ECP-L	MaxLinear, Inc.	16-DIP	Through Hole	240 kbps	4.5V ~ 5.5V	0°C ~ 70°C	500 mV	Obsolete
ADM202EANZ	Analog Devices Inc.	16-DIP	Through Hole	230 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	650 mV	Active
ADM202JNZ	Analog Devices Inc.	16-DIP	Through Hole	—	4.5V ~ 5.5V	0°C ~ 70°C	400 mV	Active
ADM232AANZ	Analog Devices Inc.	16-DIP	Through Hole	200 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	400 mV	Active
ADM232LANZ	Analog Devices Inc.	16-DIP	Through Hole	120 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	650 mV	Active
ADM232LJNZ	Analog Devices Inc.	16-DIP	Through Hole	120 kbps	4.5V ~ 5.5V	0°C ~ 70°C	650 mV	Active
ADM3202ANZ	Analog Devices Inc.	16-DIP	Through Hole	460 kbps	3V ~ 5.5V	-40°C ~ 85°C	400 mV	Active
HIN232CPZ	Renesas Electronics Corporation	16-DIP	Through Hole	120 kbps	4.5V ~ 5.5V	0°C ~ 70°C	500 mV	Active
HIN232IPZ	Renesas Electronics Corporation	16-DIP	Through Hole	120 kbps	4.5V ~ 5.5V	-40°C ~ 85°C	500 mV	Active
LT1081CN#PBF	Analog Devices Inc.	16-DIP	Through Hole	250 kbps	4.5V ~ 5.5V	0°C ~ 70°C	400 mV	Active

Engineering Selection Recommendations

Primary Recommendation: ADM202EANZ The ADM202EANZ from Analog Devices Inc. provides the closest functional match to the SP232ECP-L. It maintains identical 16-DIP through-hole packaging, equivalent supply voltage range (4.5V ~ 5.5V), and data rate performance (230 kbps versus 240 kbps). The extended operating temperature range (-40°C ~ 85°C) exceeds the original specification. RoHS3 compliance and unlimited moisture sensitivity rating ensure long-term reliability. This part is actively manufactured with substantial inventory availability (10,930 units).

Secondary Recommendation: LT1081CN#PBF The LT1081CN#PBF from Analog Devices Inc. offers superior data rate performance (250 kbps) while maintaining identical package geometry and supply voltage specifications. Operating temperature range matches the original (0°C ~ 70°C). RoHS3 compliance is confirmed. This part is suitable for applications requiring data rate performance exceeding the original specification.

Extended Temperature Range Option: ADM3202ANZ The ADM3202ANZ provides the highest data rate capability (460 kbps) among available substitutes and supports extended operating temperature range (-40°C ~ 85°C). Supply voltage range extends to 3V minimum, providing additional design flexibility. This part is recommended for applications requiring enhanced performance margins or operation in temperature-constrained environments.

Matched Hysteresis Option: HIN232CPZ The HIN232CPZ from Renesas Electronics Corporation maintains identical receiver hysteresis (500 mV) and operating temperature range (0°C ~ 70°C) as the original SP232ECP-L. This part is recommended when receiver hysteresis specification is a critical design parameter.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a lower data rate than the original SP232ECP-L? A: No. The substitute part must support a minimum data rate of 240 kbps to ensure functional compatibility. Parts with lower data rates (ADM232LANZ, ADM232LJNZ, HIN232CPZ, HIN232IPZ at 120 kbps) are not suitable for direct replacement in applications requiring the original 240 kbps performance.

Q: Are all substitute parts pin-compatible with the SP232ECP-L? A: Yes. All listed substitute parts use the 16-DIP (0.300", 7.62mm) through-hole package with identical pinout configuration for 2/2 full-duplex RS232 transceiver functionality. Direct socket replacement is possible without PCB modification.

Q: What is the significance of receiver hysteresis variation among substitute parts? A: Receiver hysteresis determines the voltage differential required to switch receiver output states. The original SP232ECP-L specifies 500 mV. Substitute parts range from 400 mV to 650 mV. Lower hysteresis (400 mV) provides faster response to marginal input signals but may increase susceptibility to noise. Higher hysteresis (650 mV) provides greater noise immunity. Selection depends on signal integrity requirements in the target application.

Q: Why do some substitute parts have extended operating temperature ranges? A: Extended temperature range parts (ADM202EANZ, ADM232AANZ, ADM3202ANZ, HIN232IPZ) are manufactured to higher reliability standards and support operation from -40°C to 85°C. These parts are suitable for industrial and automotive applications. The original SP232ECP-L operates only from 0°C to 70°C, limiting use in temperature-constrained environments.

Q: Is RoHS compliance important for selecting a substitute part? A: Yes. All active substitute parts listed carry RoHS3 compliance certification, meeting current environmental and regulatory requirements for electronic component manufacturing. The obsolete SP232ECP-L does not carry RoHS certification, making active substitutes necessary for new designs and compliance-sensitive applications.

Q: Can I use the SP232ECN-L/TR surface-mount variant as a substitute? A: No. The SP232ECN-L/TR uses 16-SOIC surface-mount packaging, which is mechanically and electrically incompatible with the through-hole 16-DIP requirement of the SP232ECP-L. PCB redesign would be necessary to accommodate this alternative package type.

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