MAX1488ECSD Equivalent & Substitute Parts

Part Overview

The MAX1488ECSD is a 4/0 RS232 driver interface IC manufactured by Analog Devices Inc./Maxim Integrated in a 14-SOIC surface mount package. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement. The MAX1488ECSD operates across a supply voltage range of 4.5V to 13.2V with a maximum data rate of 120Kbps, making it suitable for legacy RS232 communication applications requiring single-supply operation.

Substiute Parts

MAX1488ECSD

Analog Devices Inc./Maxim IntegratedIn Stock: 9207MAX1488ECSD Datasheet

Current PartRFQ

MAX1488ECSD+

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

DirectRFQ

DS14C88MX/NOPB

National SemiconductorIn Stock: 23754DS14C88MX/NOPB Datasheet

MFR RecommendedRFQ

SN75188D

Texas InstrumentsIn Stock: 2186SN75188D Datasheet

MFR RecommendedRFQ

SN75188DR

Texas InstrumentsIn Stock: 18209SN75188DR Datasheet

MFR RecommendedRFQ

SN75C188D

Texas InstrumentsIn Stock: 1534SN75C188D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX1488ECSD is determined by the following critical parameters:

Electrical Compatibility:

• RS232 protocol compliance
• 4/0 driver/receiver configuration
• Operating temperature range: 0°C ~ 70°C
• Package type: 14-SOIC surface mount

Supply Voltage Considerations: The MAX1488ECSD operates on single-supply voltage (4.5V ~ 13.2V). Substitute parts must either support this single-supply range or provide dual-supply operation (±voltage) that encompasses the single-supply requirement through appropriate circuit design.

Mechanical Compatibility: All substitute parts must use the 14-SOIC (0.154", 3.90mm Width) package to ensure direct PCB footprint compatibility.

Compliance Status: Product status (Active, Last Time Buy, or Obsolete) and RoHS compliance are secondary selection criteria based on application requirements and procurement timelines.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility): MAX1488ECSD+ is the direct successor to MAX1488ECSD from the same manufacturer. It maintains identical electrical specifications and package configuration while offering Active product status and ROHS3 compliance. This part is the preferred choice for new designs and obsolescence mitigation.

Alternative Selections Based on Supply Voltage Requirements:

For applications requiring single-supply operation within 4.5V to 12.6V range, DS14C88MX/NOPB from National Semiconductor provides functional equivalence with Active product status.

For applications supporting dual-supply operation (±7.5V to ±15V), SN75188DR from Texas Instruments offers Active product status and ROHS3 compliance. SN75188D provides equivalent functionality with Last Time Buy status. SN75C188D supports a wider dual-supply range (±4.5V to ±15V) with Last Time Buy status.

Compliance Considerations: Applications requiring RoHS3 compliance should prioritize MAX1488ECSD+, SN75188DR, SN75188D, or SN75C188D. The original MAX1488ECSD is RoHS non-compliant and unsuitable for new designs subject to RoHS regulations.

Frequently Asked Questions (FAQ)

Q: Can MAX1488ECSD+ be used as a direct replacement for MAX1488ECSD? A: Yes. MAX1488ECSD+ maintains identical electrical specifications, operating parameters, and 14-SOIC package configuration. The primary differences are Active product status and ROHS3 compliance.

Q: What is the key difference between single-supply and dual-supply RS232 drivers? A: Single-supply drivers (MAX1488ECSD, MAX1488ECSD+, DS14C88MX/NOPB) operate from a single positive voltage source. Dual-supply drivers (SN75188D, SN75188DR, SN75C188D) require both positive and negative voltage supplies. Dual-supply designs provide greater output swing capability but require additional power supply circuitry.

Q: Are the Texas Instruments SN75188 variants interchangeable? A: SN75188D and SN75188DR are functionally equivalent with identical electrical specifications. The primary difference is packaging: SN75188D uses Tube packaging while SN75188DR uses Cut Tape (CT) & Digi-Reel® packaging. Selection depends on procurement and assembly requirements.

Q: What does "Last Time Buy" product status mean? A: Last Time Buy indicates the manufacturer will no longer produce the part after a specified date. SN75188D and SN75C188D carry this status. For long-term availability, prioritize parts with Active status such as MAX1488ECSD+, DS14C88MX/NOPB, or SN75188DR.

Q: Is the 14-SOIC package footprint identical across all substitute parts? A: Yes. All listed substitute parts use the 14-SOIC (0.154", 3.90mm Width) package, ensuring direct PCB footprint compatibility without layout modifications.

Q: Which substitute part offers the widest supply voltage range? A: SN75C188D supports ±4.5V to ±15V dual-supply operation, providing the widest voltage range among the listed substitutes. This flexibility accommodates diverse power supply configurations in legacy and new system designs.