CD74HC137PW Equivalent & Substitute Parts

Part Overview

The CD74HC137PW is a decoder/demultiplexer logic integrated circuit manufactured by Texas Instruments in the 74HC series. This device implements a 1 x 3:8 decoder function in a 16-pin TSSOP surface mount package. The CD74HC137PW is currently in Last Time Buy status, indicating limited availability and the need to identify equivalent alternatives for ongoing design requirements and procurement planning.

Substiute Parts

CD74HC137PW

Texas InstrumentsIn Stock: 702CD74HC137PW Datasheet

Current PartRFQ

CD74HC137PWR

Texas InstrumentsIn Stock: 1171CD74HC137PWR Datasheet

MFR RecommendedRFQ

MC74HC238ADTG

onsemiIn Stock: 7619MC74HC238ADTG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HC137PW is determined by strict equivalence across the following critical parameters:

• Decoder/Demultiplexer function type with 1 x 3:8 circuit configuration
• 16-TSSOP surface mount package with 0.173" width (4.40mm)
• Voltage supply range of 2V ~ 6V
• Output current specifications of 5.2mA for both high and low states
• Operating temperature range of -55°C ~ 125°C
• ROHS3 compliance and equivalent regulatory status

Substitute parts are grouped into two categories based on manufacturer recommendation and parametric equivalence. All identified substitutes maintain identical electrical and mechanical specifications, ensuring direct functional replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

CD74HC137PWR is the manufacturer-recommended substitute from Texas Instruments. This part maintains Active product status, ensuring long-term availability and supply chain stability. The device is supplied in Tape & Reel format, which is standard for high-volume production environments. All electrical and mechanical parameters are identical to the CD74HC137PW, providing direct functional equivalence with no circuit modifications required.

MC74HC238ADTG is a parametric equivalent manufactured by onsemi. This part meets all electrical and mechanical specifications for functional substitution. However, the product status is listed as Obsolete, which may impact long-term procurement viability. This part is supplied in Tube packaging format. Selection of this substitute should be evaluated based on immediate availability requirements and project timeline constraints.

Frequently Asked Questions (FAQ)

Q: Can CD74HC137PWR be used as a direct replacement for CD74HC137PW?

A: Yes. Both parts are 1 x 3:8 decoder/demultiplexers in 16-TSSOP packages with identical electrical specifications (2V ~ 6V supply, 5.2mA output current, -55°C ~ 125°C operating range). The primary difference is packaging format (Tape & Reel versus Tube) and product status (Active versus Last Time Buy). No circuit modifications are required.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging is used for lower-volume applications and manual assembly processes. Tape & Reel packaging is designed for automated pick-and-place assembly in high-volume production. Both formats contain the same die and provide identical electrical performance. Selection depends on manufacturing process requirements.

Q: Is MC74HC238ADTG suitable for new designs?

A: MC74HC238ADTG meets all parametric requirements for functional substitution. However, its Obsolete product status indicates limited future availability. For new designs requiring long-term supply assurance, CD74HC137PWR is the preferred choice due to its Active status.

Q: Are there any pin compatibility concerns between these substitutes?

A: All three parts use the 16-TSSOP package with identical pinout and electrical characteristics. Pin-for-pin compatibility is confirmed across all substitutes.

Q: What compliance certifications apply to these parts?

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