SN75188DR Equivalent & Substitute Parts

Part Overview

The SN75188DR is an active RS232 interface driver IC manufactured by Texas Instruments, configured as a 4/0 driver (4 drivers, 0 receivers) in a 14-SOIC surface mount package. This component is classified as an Interface driver and maintains Active product status. The SN75188DR operates with a supply voltage range of ±7.5V to 15V and supports operating temperatures from 0°C to 70°C. Equivalent and substitute parts are identified based on matching functional classification, protocol compatibility, driver/receiver configuration, package type, and electrical operating parameters.

Substiute Parts

SN75188DR

Texas InstrumentsIn Stock: 18209SN75188DR Datasheet

Current PartRFQ

MAX1488ECSD+

Analog Devices Inc./Maxim IntegratedIn Stock: 2251MAX1488ECSD+ Datasheet

MFR RecommendedRFQ

MAX1488EESD+

Analog Devices Inc./Maxim IntegratedIn Stock: 3411MAX1488EESD+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN75188DR are qualified based on the following criteria:

Mandatory Matching Parameters:

• Protocol: RS232
• Number of Drivers/Receivers: 4/0
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Product Status: Active
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Parameter Variations:

• Voltage - Supply: Substitute parts must support the operating voltage range of the main part or provide a compatible subset
• Operating Temperature: Substitute parts may have extended or different temperature ranges
• Data Rate: Substitute parts may specify data rate capabilities not listed for the main part
• Manufacturer: Different manufacturers are acceptable provided all other parameters align

The MAX1488ECSD+ and MAX1488EESD+ from Analog Devices Inc./Maxim Integrated meet all mandatory matching criteria and are qualified as manufacturer-recommended substitutes.

Parameter Comparison

Engineering Selection Recommendations

Both MAX1488ECSD+ and MAX1488EESD+ are manufacturer-recommended substitutes for the SN75188DR. Selection between these options depends on application temperature requirements:

MAX1488ECSD+ is suitable for applications operating within the 0°C to 70°C temperature range, matching the thermal envelope of the SN75188DR.

MAX1488EESD+ extends the operating temperature range to -40°C to 85°C, providing thermal margin for applications requiring extended temperature performance.

Both substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and identical package geometry. The voltage supply range of the substitutes (4.5V ~ 13.2V) is compatible with the SN75188DR supply range (±7.5V ~ 15V) within standard operating conditions.

Frequently Asked Questions (FAQ)

Q: Can MAX1488ECSD+ and MAX1488EESD+ be used interchangeably with SN75188DR?

A: Both parts are qualified substitutes based on matching protocol (RS232), driver/receiver configuration (4/0), package type (14-SOIC), and compliance certifications. Selection depends on the application's operating temperature requirements.

Q: What is the primary difference between MAX1488ECSD+ and MAX1488EESD+?

A: The operating temperature range differs. MAX1488ECSD+ operates from 0°C to 70°C, while MAX1488EESD+ operates from -40°C to 85°C. Both parts are otherwise functionally equivalent.

Q: Are there package compatibility concerns when substituting these parts?

A: No. All three parts use the 14-SOIC (0.154", 3.90mm Width) surface mount package with identical pinout and footprint requirements.

Q: How do the voltage supply ranges compare?

A: The SN75188DR operates at ±7.5V to 15V, while both MAX1488 variants operate at 4.5V to 13.2V. The MAX1488 range is compatible with typical single-supply RS232 driver applications within the overlapping voltage window.

Q: Are all three parts RoHS compliant?

A: Yes. SN75188DR, MAX1488ECSD+, and MAX1488EESD+ are all ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating.