74HC137N,652 Equivalent & Substitute Parts

Part Overview

The 74HC137N,652 is a decoder/demultiplexer logic integrated circuit manufactured by NXP USA Inc. in a 16-DIP package configuration. This component functions as a 1 x 3:8 decoder, converting three input lines into eight mutually exclusive output lines. The part is classified as obsolete, making equivalent substitute components necessary for ongoing design support and procurement continuity.

Substiute Parts

74HC137N,652

NXP USA Inc.In Stock: 95274HC137N,652 Datasheet

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CD74HC137E

Harris CorporationIn Stock: 2661CD74HC137E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC137N,652 is determined by the following critical parameters:

• Functional equivalence: Decoder/Demultiplexer type with 1 x 3:8 circuit configuration
• Package compatibility: 16-DIP (0.300", 7.62mm) through-hole mounting
• Electrical specifications: Voltage supply range 2V ~ 6V, output current 5.2mA (high and low)
• Logic family: 74HC series compatibility
• Base product number: 74HC137

The CD74HC137E qualifies as a direct substitute based on matching all critical parameters within acceptable tolerances.

Parameter Comparison

Engineering Selection Recommendations

Both the 74HC137N,652 and CD74HC137E are obsolete components. Selection between these parts should be based on the following factors:

RoHS Compliance: The 74HC137N,652 is ROHS3 compliant, while the CD74HC137E is RoHS non-compliant. For applications requiring RoHS certification, the 74HC137N,652 is the appropriate choice.

Operating Temperature Range: The CD74HC137E supports an extended lower temperature limit of -55°C compared to -40°C for the 74HC137N,652. Applications requiring operation below -40°C should specify the CD74HC137E.

Packaging Format: The 74HC137N,652 is supplied in standard packaging, while the CD74HC137E is supplied in tube packaging. Procurement and handling requirements may differ accordingly.

Both parts share identical electrical specifications, package dimensions, and functional characteristics, ensuring direct pin-for-pin compatibility in through-hole PCB applications.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC137E directly replace the 74HC137N,652 in existing designs?

A: Yes, the CD74HC137E is a direct functional and pin-compatible substitute. Both components feature identical 16-DIP package dimensions, voltage supply ranges, and output current specifications. PCB layout and schematic modifications are not required.

Q: What is the primary difference between these two parts?

A: The main differences are RoHS compliance status and operating temperature range. The 74HC137N,652 is ROHS3 compliant with an operating range of -40°C to 125°C, while the CD74HC137E is RoHS non-compliant with an extended lower temperature range of -55°C to 125°C.

Q: Are there any package compatibility concerns?

A: No. Both parts use the 16-DIP (0.300", 7.62mm) through-hole package. Pin assignments, spacing, and mounting requirements are identical.

Q: Which part should be selected for new designs?

A: Selection depends on regulatory and environmental requirements. For RoHS-compliant applications, specify the 74HC137N,652. For applications requiring extended low-temperature operation below -40°C, specify the CD74HC137E.

Q: What is the significance of the obsolete status?

A: Both parts are classified as obsolete, indicating discontinued production. Availability is limited to existing inventory. Long-term design strategies should evaluate modern decoder/demultiplexer alternatives from current product lines.