LT1030CD Equivalent & Substitute Parts

Part Overview

The LT1030CD is a 4/0 Driver RS232 interface IC manufactured by Texas Instruments in a 14-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production status. The LT1030CD operates with a supply voltage range of 5V to 15V and is suitable for RS232 communication applications requiring driver functionality. Due to its Last Time Buy status, identifying compatible substitute parts is essential for ongoing design support and production continuity.

Substiute Parts

LT1030CD

Texas InstrumentsIn Stock: 2824LT1030CD Datasheet

Current PartRFQ

SN75188DR

Texas InstrumentsIn Stock: 18209SN75188DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LT1030CD is determined by the following critical parameters:

Functional Equivalence: The substitute part must provide 4/0 driver/receiver configuration for RS232 protocol communication.

Package Compatibility: The substitute must use the 14-SOIC surface mount package with identical pin pitch and dimensions (0.154", 3.90mm Width) to ensure PCB layout compatibility without redesign.

Electrical Specifications: The substitute must operate within the same or overlapping supply voltage range and support the same operating temperature range (0°C ~ 70°C).

Compliance Requirements: The substitute must maintain ROHS3 compliance and REACH unaffected status to satisfy regulatory requirements.

The SN75188DR from Texas Instruments meets all substitution criteria as an Active product with identical functional configuration, package specification, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The SN75188DR is the direct substitute for the LT1030CD based on the following engineering criteria:

Functional Compatibility: Both parts provide identical 4/0 RS232 driver configuration in the same 14-SOIC package, ensuring pin-for-pin compatibility and no PCB redesign requirement.

Supply Voltage Consideration: The SN75188DR operates at ±7.5V ~ 15V, which encompasses the LT1030CD range of 5V ~ 15V. Applications using the LT1030CD within the 5V ~ 15V range will operate within the SN75188DR specification window.

Product Status Advantage: The SN75188DR maintains Active product status with unlimited moisture sensitivity rating, providing superior long-term availability and storage stability compared to the Last Time Buy LT1030CD.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying current regulatory requirements without additional qualification.

Frequently Asked Questions (FAQ)

Q: Can the SN75188DR directly replace the LT1030CD without PCB modifications?

A: Yes. Both parts use the 14-SOIC package with identical pin pitch and dimensions. No PCB layout changes are required for substitution.

Q: What is the voltage supply difference between these parts?

A: The LT1030CD operates at 5V ~ 15V, while the SN75188DR operates at ±7.5V ~ 15V. The SN75188DR supports a wider range with bipolar supply capability. Applications using the LT1030CD within its specified range will function within the SN75188DR operating window.

Q: Why is the LT1030CD marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production. Existing inventory is available for a limited time. The SN75188DR is recommended for new designs and ongoing production to ensure long-term component availability.

Q: Are there compliance differences between these parts?

A: Both parts are ROHS3 compliant and REACH unaffected. The SN75188DR has a superior moisture sensitivity rating (MSL 1 Unlimited vs. MSL 2 1 Year), providing better storage stability.

Q: What is the functional difference between 4/0 driver configuration?

A: The 4/0 designation indicates 4 drivers and 0 receivers. Both the LT1030CD and SN75188DR provide this identical configuration for RS232 transmission applications.