CD74HC4515E Equivalent & Substitute Parts

Part Overview

The CD74HC4515E is a Decoder/Demultiplexer logic IC with 1 x 4:16 circuit configuration, manufactured by Texas Instruments in the 74HC series. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The CD74HC4515E operates as a single-supply decoder, converting 4-bit binary input to 16 decoded outputs, and is commonly used in address decoding, output selection, and multiplexing applications.

Substiute Parts

CD74HC4515E

Texas InstrumentsIn Stock: 2008CD74HC4515E Datasheet

Current PartRFQ

CD74HC4515M96

Texas InstrumentsIn Stock: 2112CD74HC4515M96 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC4515E is determined by the following critical parameters that must remain constant across equivalent parts:

• Circuit configuration: 1 x 4:16 decoder/demultiplexer function
• Output current specifications: 5.2mA high and low
• Single supply voltage operation: 2V ~ 6V range
• Operating temperature range: -55°C ~ 125°C
• Series compatibility: 74HC logic family
• Regulatory compliance: ROHS3 and REACH status

The primary substitute, CD74HC4515M96, maintains identical electrical and functional specifications while differing only in packaging format (24-SOIC surface mount versus 24-DIP through hole). This substitution is valid for applications where PCB assembly method and board layout accommodate surface-mount technology.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC4515M96 is the primary substitute for the obsolete CD74HC4515E. Both parts maintain identical electrical specifications, functional performance, and regulatory compliance status (ROHS3 and REACH). The CD74HC4515M96 carries active product status, ensuring continued availability and manufacturing support.

Selection between these parts depends on PCB assembly requirements. The CD74HC4515E uses through-hole mounting (24-DIP package), suitable for breadboard prototyping and legacy board designs. The CD74HC4515M96 uses surface-mount technology (24-SOIC package), appropriate for modern high-density PCB layouts and automated assembly processes.

Both parts operate within identical voltage ranges (2V ~ 6V) and temperature ranges (-55°C ~ 125°C), with matching output current specifications (5.2mA). Pin-to-pin functional equivalence is maintained across the 1 x 4:16 decoder/demultiplexer configuration.

Frequently Asked Questions (FAQ)

Q: Can CD74HC4515M96 directly replace CD74HC4515E in existing designs?

A: Electrical and functional replacement is direct. Physical replacement requires PCB redesign to accommodate the different package format (24-SOIC surface mount versus 24-DIP through hole). Pin assignments and signal functions are identical.

Q: What are the key differences between these substitute parts?

A: The primary difference is packaging and mounting technology. CD74HC4515E uses through-hole DIP packaging; CD74HC4515M96 uses surface-mount SOIC packaging. All electrical parameters, voltage ranges, current ratings, and operating temperatures are identical.

Q: Are there any compliance or regulatory differences?

A: Both parts maintain identical ROHS3 compliance and REACH unaffected status. No regulatory differences exist between the substitute parts.

Q: Why is the CD74HC4515E classified as obsolete?

A: The CD74HC4515E is obsolete due to industry transition from through-hole to surface-mount technology. The CD74HC4515M96 represents the current-generation equivalent in the active product line.

Q: What is the moisture sensitivity level for these parts?

A: Both CD74HC4515E and CD74HC4515M96 have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can these parts be used interchangeably in new designs?

A: Yes, provided the PCB layout and assembly process accommodate the selected package format. Electrical performance and functional behavior are identical across both parts.