PCA8550D,112 Equivalent & Substitute Parts

Part Overview

The PCA8550D,112 is a 1 x 4:4 multiplexer logic IC manufactured by NXP USA Inc., housed in a 16-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The part operates with a single supply voltage between 3V and 3.6V and is suitable for applications requiring multiplexing functionality in the 0°C to 70°C operating temperature range.

Substiute Parts

PCA8550D,112

NXP USA Inc.In Stock: 994PCA8550D,112 Datasheet

Current PartRFQ

PCA8550PW,118

NXP USA Inc.In Stock: 11630PCA8550PW,118 Datasheet

MFR RecommendedRFQ

PCA8550D

Texas InstrumentsIn Stock: 8782PCA8550D Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PCA8550D,112 is determined by strict equivalence across the following critical parameters:

• Circuit configuration: 1 x 4:4 multiplexer topology
• Output current specifications: 2mA high, 2mA low
• Supply voltage range: 3V ~ 3.6V
• Operating temperature range: 0°C ~ 70°C
• Mounting type: Surface mount
• Base product number: PCA8550

Substitute parts are grouped into two categories based on their relationship to the main part:

MFR Recommended Substitute: PCA8550PW,118 differs only in package type (16-TSSOP vs. 16-SOIC) and product status (Active vs. Obsolete), maintaining all electrical parameters and compliance certifications.

Parametric Equivalent: PCA8550D from Texas Instruments maintains identical electrical specifications and package form factor but originates from a different manufacturer with variations in compliance documentation.

Parameter Comparison

Engineering Selection Recommendations

For direct package compatibility: The PCA8550D from Texas Instruments maintains the identical 16-SOIC package footprint as the original PCA8550D,112. However, this part carries an MSL rating of 3 (168 Hours) versus the original MSL 1 (Unlimited), requiring stricter moisture control during storage and handling. Additionally, RoHS compliance status is listed as "Not applicable" for the Texas Instruments variant, whereas the NXP original is ROHS3 Compliant.

For active product status with NXP manufacturing: The PCA8550PW,118 is the manufacturer-recommended substitute, offering Active product status and identical ROHS3 compliance. The trade-off is a package change from 16-SOIC to 16-TSSOP, requiring PCB layout modification. Both parts share MSL 1 (Unlimited) rating, eliminating moisture sensitivity concerns.

For new designs: Active product status and established supply availability favor the PCA8550PW,118 (NXP) or PCA8550D (Texas Instruments) over the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can PCA8550PW,118 replace PCA8550D,112 directly on the PCB?

A: No. While electrically equivalent, PCA8550PW,118 uses a 16-TSSOP package (0.173", 4.40mm width) versus the original 16-SOIC package (0.154", 3.90mm width). PCB footprint modification is required.

Q: What is the key difference between the NXP and Texas Instruments PCA8550D variants?

A: Both maintain identical electrical specifications and 16-SOIC package form factor. The primary differences are: NXP original is ROHS3 Compliant with MSL 1 (Unlimited); Texas Instruments variant has "Not applicable" RoHS status and MSL 3 (168 Hours), requiring enhanced moisture control.

Q: Why is the original PCA8550D,112 classified as obsolete?

A: Obsolete status indicates the part is no longer in active production. Substitute parts with Active status are recommended for new designs and ongoing production.

Q: Are all three parts functionally interchangeable in circuit operation?

A: Yes, all three parts share identical electrical parameters: 1 x 4:4 multiplexer configuration, 2mA output current, 3V ~ 3.6V supply voltage, and 0°C ~ 70°C operating temperature range. Substitution differences relate to package form factor, compliance certifications, and product lifecycle status.

Q: Which substitute should be selected for moisture-sensitive applications?

A: Both NXP variants (PCA8550D,112 and PCA8550PW,118) carry MSL 1 (Unlimited) rating, suitable for moisture-sensitive environments. The Texas Instruments PCA8550D requires MSL 3 (168 Hours) handling protocols.