74HC259PW,112 Equivalent & Substitute Parts

Part Overview

The 74HC259PW,112 is an 8-bit addressable latch IC manufactured by Nexperia USA Inc., classified as a D-Type, Addressable logic component with a 1:8 circuit configuration. This part operates across a 2V to 6V supply voltage range and is housed in a 16-TSSOP surface mount package. The device is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

74HC259PW,112

Nexperia USA Inc.In Stock: 126274HC259PW,112 Datasheet

Current PartRFQ

MC74HC259ADTR2G

onsemiIn Stock: 3434MC74HC259ADTR2G Datasheet

DirectRFQ

SN74HC259PWR

Texas InstrumentsIn Stock: 132433SN74HC259PWR Datasheet

SimilarRFQ

SN74HC259PWT

Texas InstrumentsIn Stock: 3096SN74HC259PWT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC259PW,112 is determined by strict alignment across the following critical parameters:

• Logic Type and Circuit Configuration: All substitutes must maintain D-Type, Addressable logic with 1:8 circuit configuration
• Package and Mounting: All substitutes must use 16-TSSOP surface mount packaging with identical physical dimensions (0.173", 4.40mm Width)
• Supply Voltage Range: All substitutes must support the 2V ~ 6V operating range
• Output Characteristics: All substitutes must provide Standard output type with 5.2mA output current capability
• Compliance: All substitutes must maintain ROHS3 compliance and REACH unaffected status

The substitute parts identified below meet these core electrical and mechanical requirements. Variations in propagation delay time and operating temperature ranges are noted but do not preclude substitution when the application requirements fall within the specified limits of the substitute part.

Parameter Comparison

Engineering Selection Recommendations

MC74HC259ADTR2G (onsemi) is the primary recommended substitute. This part maintains full electrical and mechanical compatibility with the 74HC259PW,112 while offering active product status and extended lower operating temperature range (-55°C to 125°C). The 25ns propagation delay is acceptable for applications where timing margins accommodate this specification. This part is supplied in Tape & Reel packaging and maintains ROHS3 compliance.

SN74HC259PWR (Texas Instruments) provides an alternative with superior propagation delay performance (13ns) and active product status. This part operates within a narrower temperature range (-40°C to 85°C) and is supplied in Cut Tape and Digi-Reel packaging. Selection of this part is appropriate when the application temperature range does not exceed 85°C and faster propagation delay is beneficial.

SN74HC259PWT (Texas Instruments) offers identical electrical performance to SN74HC259PWR with Tape & Reel packaging. This part is discontinued at DiGi Electronics but remains available through alternative distribution channels. It is suitable for applications with identical temperature and timing requirements as SN74HC259PWR.

All three substitute parts maintain compliance with ROHS3 and REACH requirements, ensuring regulatory alignment with the original 74HC259PW,112 specification.

Frequently Asked Questions (FAQ)

Q: Can the MC74HC259ADTR2G directly replace the 74HC259PW,112 in existing designs?

A: Yes. The MC74HC259ADTR2G maintains identical logic type, circuit configuration, output characteristics, supply voltage range, and 16-TSSOP package dimensions. The 25ns propagation delay is within acceptable margins for most applications designed around the original 17ns specification. Verify that your circuit timing does not require propagation delay faster than 25ns.

Q: What is the difference between the Texas Instruments SN74HC259PWR and SN74HC259PWT?

A: Both parts are electrically identical with 13ns propagation delay and -40°C to 85°C operating temperature range. The primary difference is packaging: SN74HC259PWR is supplied in Cut Tape and Digi-Reel format, while SN74HC259PWT is supplied in Tape & Reel format. Selection depends on your procurement and assembly process requirements.

Q: Are there temperature range limitations when substituting the 74HC259PW,112?

A: The original part specifies -40°C to 125°C operation. The MC74HC259ADTR2G extends the lower limit to -55°C, providing broader coverage. The Texas Instruments alternatives (SN74HC259PWR and SN74HC259PWT) limit operation to -40°C to 85°C. If your application requires operation above 85°C, the MC74HC259ADTR2G is the appropriate choice.

Q: Does propagation delay variation affect circuit functionality?

A: Propagation delay differences (13ns to 25ns) are specification variations that must be evaluated against your circuit timing requirements. If your design includes timing margins or does not depend on the fastest possible propagation delay, all three substitutes are functionally compatible. If your circuit requires propagation delay of 17ns or faster, the Texas Instruments parts (13ns) are preferred.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. All identified substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original 74HC259PW,112.

Q: What is the significance of product status (Active vs. Obsolete vs. Discontinued)?

A: Product status indicates manufacturer support and availability. The MC74HC259ADTR2G and SN74HC259PWR are active products with ongoing manufacturer support and broad distribution availability. The SN74HC259PWT is discontinued at DiGi Electronics but may remain available through alternative distributors. For new designs, active products are preferred for long-term supply assurance.