MAX4545CAP Equivalent & Substitute Parts

Part Overview

The MAX4545CAP is a quad SPST video switch IC manufactured by Analog Devices Inc./Maxim Integrated, designed for video signal routing and multiplexing applications. This component features four independent single-pole single-throw switch channels with bi-directional capability and T-switch configuration, operating across a wide supply voltage range of 2.7V to 12V (single supply) or ±2.7V to 6V (dual supply).

The MAX4545CAP is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain identical electrical performance characteristics, mechanical compatibility, and package specifications to ensure direct replacement capability without circuit redesign.

Substiute Parts

MAX4545CAP

Analog Devices Inc./Maxim IntegratedIn Stock: 25045MAX4545CAP Datasheet

Current PartRFQ

MAX4545CAP+

Analog Devices Inc./Maxim IntegratedIn Stock: 1478MAX4545CAP+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4545CAP is determined by strict equivalence across the following critical parameters:

• Switch Architecture: Quad SPST configuration with 1:1 multiplexer/demultiplexer circuit
• Electrical Performance: On-state resistance maximum of 20Ω, -3dB bandwidth of 300MHz
• Supply Voltage Compatibility: Single supply range 2.7V ~ 12V and dual supply range ±2.7V ~ 6V
• Thermal Operating Range: 0°C ~ 70°C
• Package Specification: 20-SSOP surface mount package with 0.209" (5.30mm) width
• Functional Features: Bi-directional operation with T-switch configuration

The MAX4545CAP+ qualifies as a direct substitute based on complete parameter alignment across all electrical, mechanical, and functional specifications. The primary distinction is product status and compliance certification, not performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The MAX4545CAP+ is the direct functional equivalent for applications currently utilizing the MAX4545CAP. Selection between these parts is determined by regulatory and compliance requirements rather than electrical performance.

For new designs and production transitions: The MAX4545CAP+ is the appropriate selection. This part maintains active product status with Analog Devices Inc./Maxim Integrated and carries ROHS3 compliance certification, meeting current environmental and regulatory standards. The active status ensures continued availability, technical support, and manufacturing consistency.

For legacy system maintenance: The MAX4545CAP remains functionally equivalent where existing inventory is available and regulatory compliance requirements do not mandate RoHS3 certification. However, long-term availability is not assured due to obsolete product status.

Both parts share identical electrical specifications, package dimensions, and thermal operating ranges, enabling direct substitution at the component level without circuit modification or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can the MAX4545CAP+ directly replace the MAX4545CAP in existing circuits?

A: Yes. The MAX4545CAP+ provides complete electrical and mechanical equivalence. All performance parameters, supply voltage ranges, bandwidth specifications, and package dimensions are identical. Direct substitution requires no circuit redesign or board layout modification.

Q: What is the primary difference between MAX4545CAP and MAX4545CAP+?

A: The MAX4545CAP+ is the active production equivalent with ROHS3 compliance certification. The MAX4545CAP is classified as obsolete. Electrical performance and functional specifications are identical.

Q: Are there packaging differences between these parts?

A: Both parts use the 20-SSOP surface mount package with 0.209" (5.30mm) width. The MAX4545CAP is supplied in standard packaging, while the MAX4545CAP+ is supplied in tube packaging. Pin configuration and footprint are identical.

Q: What supply voltage configurations are supported?

A: Both parts support single supply operation from 2.7V to 12V or dual supply operation from ±2.7V to 6V. Circuit design determines which configuration is appropriate for the application.

Q: Is the -3dB bandwidth specification identical between parts?

A: Yes. Both the MAX4545CAP and MAX4545CAP+ specify 300MHz -3dB bandwidth, ensuring equivalent performance in video switching and high-frequency signal routing applications.

Q: What is the on-state resistance specification?

A: Both parts specify a maximum on-state resistance of 20Ω across all four switch channels, maintaining consistent signal integrity and minimal insertion loss.

Q: Are moisture sensitivity levels the same?

A: Yes. Both parts carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions for storage or handling.