CD4522BPW Equivalent & Substitute Parts

Part Overview

The CD4522BPW is a Counter IC Divide-by-N logic component manufactured by Texas Instruments, designed for 4-bit positive and negative edge-triggered counting applications. This device operates across a wide supply voltage range of 3V to 18V and supports count rates up to 8 MHz. The CD4522BPW is classified as an Obsolete product, making identification of functionally compatible alternatives essential for ongoing system support and new design implementations where legacy component replacement is required.

Substiute Parts

CD4522BPW

Texas InstrumentsIn Stock: 2121CD4522BPW Datasheet

Current PartRFQ

SN74HCS595DYYR

Texas InstrumentsIn Stock: 3462SN74HCS595DYYR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4522BPW requires evaluation of functional logic type, bit width, supply voltage compatibility, operating temperature range, and package form factor. The CD4522BPW is a Divide-by-N counter with 4-bit architecture and dual-edge trigger capability. Substitute parts must maintain compatibility across these core electrical parameters: supply voltage range (3V to 18V minimum), operating temperature span (-55°C to 125°C minimum), and surface mount packaging suitable for 16-pin configurations.

The identified substitute, SN74HCS595DYYR, represents a functionally different logic device (Shift Register versus Counter). Substitution between these parts is not recommended based on differing logic types and architectural functions, despite both being Texas Instruments logic components in surface mount packages.

Parameter Comparison

Engineering Selection Recommendations

The CD4522BPW is an Obsolete product with ROHS3 compliance certification. Direct functional substitution with the SN74HCS595DYYR is not supported due to fundamental architectural differences: the CD4522BPW performs divide-by-N counter operations while the SN74HCS595DYYR functions as a shift register. These represent distinct logic families with different operational principles and pin configurations.

For applications requiring CD4522BPW replacement, evaluation must focus on identifying active-status counter ICs within the 4000B or 74HCS logic series that maintain 4-bit divide-by-N functionality, dual-edge trigger capability, and compatible package footprints. Supply voltage and temperature range requirements must be verified against the specific application environment.

Frequently Asked Questions (FAQ)

Q: Can the SN74HCS595DYYR directly replace the CD4522BPW in existing designs?

A: No. The SN74HCS595DYYR is a shift register, not a counter. These devices perform fundamentally different logic functions and are not interchangeable despite both being Texas Instruments logic components.

Q: What are the critical parameters for CD4522BPW substitution?

A: Logic type (Divide-by-N counter), bit width (4-bit), trigger capability (positive and negative edge), supply voltage range (minimum 3V to 18V), operating temperature range (minimum -55°C to 125°C), and package form factor (16-pin surface mount).

Q: Why is the CD4522BPW classified as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Existing inventory may be available through authorized distributors, but long-term availability is not guaranteed.

Q: Are there package compatibility considerations between 16-TSSOP and SOT-23-16 Thin?

A: No. These are distinct package types with different pin spacing, footprint dimensions, and PCB layout requirements. They are not mechanically or electrically interchangeable.

Q: What compliance certifications should be verified for substitute parts?

A: RoHS compliance status, REACH applicability, and ECCN classification should match or exceed the requirements of the original CD4522BPW specification for regulated applications.