PCA9536DG4 Equivalent & Substitute Parts

Part Overview

The PCA9536DG4 is a 4-channel I/O expander IC designed for I2C and SMBus communication at 400 kHz, packaged in an 8-SOIC surface mount configuration. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The PCA9536DG4 provides push-pull output capability with 10mA/25mA source/sink current and operates across a 2.3V to 5.5V supply voltage range, suitable for embedded systems requiring expanded I/O functionality.

Substiute Parts

PCA9536DG4

Texas InstrumentsIn Stock: 1069PCA9536DG4 Datasheet

Current PartRFQ

PCA9536DR

Texas InstrumentsIn Stock: 7181PCA9536DR Datasheet

MFR RecommendedRFQ

PCA9536D

Texas InstrumentsIn Stock: 25240PCA9536D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PCA9536DG4 are qualified based on strict electrical and mechanical parameter equivalence. All substitute parts must maintain identical specifications across the following critical parameters:

• Number of I/O channels: 4
• Interface protocol: I2C and SMBus
• Clock frequency: 400 kHz
• Output configuration: Push-Pull
• Output current capability: 10mA/25mA source/sink
• Supply voltage range: 2.3V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C
• Package type: 8-SOIC surface mount
• Base product number: PCA9536
• Compliance standards: ROHS3, REACH Unaffected

Substitution is permitted across different packaging formats (Cut Tape, Digi-Reel, Tube) and product status categories, provided all electrical and mechanical parameters remain unchanged.

Parameter Comparison

Engineering Selection Recommendations

All three parts—PCA9536DG4, PCA9536DR, and PCA9536D—are electrically and mechanically equivalent and meet identical compliance requirements (ROHS3 Compliant, REACH Unaffected). Selection between these parts should be based on product status and packaging availability:

PCA9536DR is the preferred choice for new designs and production applications, as it maintains Active product status with the highest current inventory (7120 Pcs). This part is available in Cut Tape and Digi-Reel packaging formats, supporting both automated assembly and manual component handling.

PCA9536D is available in Tube packaging with substantial inventory (25200 Pcs) but carries Obsolete product status, identical to the original PCA9536DG4. This part remains suitable for legacy system maintenance and replacement applications where existing supply chains are established.

PCA9536DG4 is classified as Obsolete with limited inventory (1018 Pcs). For new production, transition to PCA9536DR is recommended to ensure long-term component availability and manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can PCA9536DR be used as a direct replacement for PCA9536DG4?

A: Yes. Both parts are electrically and mechanically identical, with all functional parameters matching exactly. The primary difference is product status (Active vs. Obsolete) and packaging format. PCA9536DR is recommended for new designs.

Q: What is the difference between the packaging formats (Cut Tape, Digi-Reel, Tube)?

A: Packaging format affects component handling and assembly processes. Cut Tape and Digi-Reel formats are optimized for automated pick-and-place assembly equipment. Tube packaging is suitable for manual handling and lower-volume applications. All formats contain electrically identical components.

Q: Are there any electrical performance differences between PCA9536DG4, PCA9536DR, and PCA9536D?

A: No. All three parts deliver identical electrical performance, including I/O count, interface protocol, clock frequency, output current capability, supply voltage range, and operating temperature specifications.

Q: Why is PCA9536DG4 classified as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support for this specific part number variant. PCA9536DR (Active status) provides equivalent functionality with ongoing manufacturer support.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes, provided the PCB footprint accommodates the 8-SOIC package. All three parts use identical 8-SOIC (0.154", 3.90mm Width) surface mount packaging and pin configurations.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.