SP310EEP-L RS232 Transceiver Equivalent & Substitute Parts

Part Overview

The SP310EEP-L is a 2/2 full-duplex RS232 transceiver manufactured by MaxLinear, Inc., housed in an 18-pin DIP package. This interface component operates within the 4.5V to 5.5V supply voltage range and supports data rates up to 240 kbps. The part is classified as obsolete, making equivalent substitutes necessary for ongoing system maintenance and new design implementations where RS232 communication is required.

Substiute Parts

SP310EEP-L

MaxLinear, Inc.In Stock: 768SP310EEP-L Datasheet

Current PartRFQ

LT1080IN#PBF

Linear TechnologyIn Stock: 898LT1080IN#PBF Datasheet

MFR RecommendedRFQ

LT1180AIN#PBF

Analog Devices Inc.In Stock: 827LT1180AIN#PBF Datasheet

MFR RecommendedRFQ

LT1280AIN#PBF

Analog Devices Inc.In Stock: 1056LT1280AIN#PBF Datasheet

MFR RecommendedRFQ

LT1780IN#PBF

Analog Devices Inc.In Stock: 1106LT1780IN#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SP310EEP-L is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Protocol: RS232
• Number of Drivers/Receivers: 2/2
• Duplex: Full
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 18-DIP (0.300", 7.62mm)

All substitute parts listed maintain these core specifications. Variations in receiver hysteresis (500 mV vs. 400 mV) and data rate (240 kbps vs. 250 kbps/250 KBd) remain within acceptable operational tolerances for RS232 interface applications, as these parameters do not affect pin compatibility or basic functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

LT1180AIN#PBF and LT1780IN#PBF are preferred substitutes for new designs and ongoing production. Both parts are manufactured by Analog Devices Inc., carry Active product status, and comply with ROHS3 standards. These parts provide long-term availability and regulatory compliance for applications requiring RS232 2/2 full-duplex transceiver functionality.

LT1280AIN#PBF is an alternative Active substitute also from Analog Devices Inc. with ROHS3 compliance. This part maintains full electrical and mechanical compatibility with the SP310EEP-L.

LT1080IN#PBF, manufactured by Linear Technology, is an Obsolete substitute. While electrically compatible, this part shares obsolete status with the original SP310EEP-L and should not be selected for new designs requiring long-term component availability.

All substitute parts maintain identical pin configurations, supply voltage ranges, operating temperature specifications, and 18-DIP package geometry, ensuring direct functional replacement in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can LT1180AIN#PBF directly replace SP310EEP-L in existing designs?

A: Yes. Both parts are 2/2 full-duplex RS232 transceivers in 18-DIP packages with identical supply voltage (4.5V ~ 5.5V) and operating temperature ranges (-40°C ~ 85°C). Pin-to-pin compatibility is maintained.

Q: What is the significance of the 500 mV vs. 400 mV receiver hysteresis difference?

A: Receiver hysteresis affects input threshold characteristics. The SP310EEP-L specifies 500 mV while substitute parts specify 400 mV. Both values remain within RS232 standard operating margins and do not affect functional compatibility for standard RS232 communication applications.

Q: Why is LT1080IN#PBF listed as a substitute if it is obsolete?

A: LT1080IN#PBF is included as a documented equivalent based on electrical and mechanical parameters. However, its Obsolete status makes it unsuitable for new designs. Active alternatives (LT1180AIN#PBF, LT1280AIN#PBF, LT1780IN#PBF) are recommended for production applications.

Q: Are all substitute parts RoHS compliant?

A: LT1180AIN#PBF, LT1280AIN#PBF, and LT1780IN#PBF are ROHS3 compliant. LT1080IN#PBF is RoHS non-compliant. Compliance requirements should be verified against your application specifications.

Q: What is the difference between the LT1180AIN#PBF, LT1280AIN#PBF, and LT1780IN#PBF substitutes?

A: All three parts are Active, ROHS3-compliant RS232 2/2 full-duplex transceivers in 18-DIP packages with identical electrical specifications. Selection between these parts should be based on availability, packaging preference (Tube), and internal design requirements specific to your application.

Q: Is the 18-DIP package dimension identical across all parts?

A: Yes. All parts, including the original SP310EEP-L and all substitutes, use the 18-DIP (0.300", 7.62mm) package with identical pin spacing and physical dimensions, ensuring mechanical compatibility in through-hole PCB designs.