74HC258DB,112 Equivalent & Substitute Parts

Part Overview

The 74HC258DB,112 is a 4 x 2:1 multiplexer logic integrated circuit manufactured by NXP USA Inc. in a 16-SSOP surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The 74HC258 series provides single-supply operation across a 2V to 6V range with symmetric output current characteristics suitable for general-purpose logic multiplexing applications.

Substiute Parts

74HC258DB,112

NXP USA Inc.In Stock: 92974HC258DB,112 Datasheet

Current PartRFQ

SN74AHC157DBR

Texas InstrumentsIn Stock: 16218SN74AHC157DBR Datasheet

MFR RecommendedRFQ

SN74HC258PW

Texas InstrumentsIn Stock: 2679SN74HC258PW Datasheet

MFR RecommendedRFQ

SN74HC258PWR

Texas InstrumentsIn Stock: 2709SN74HC258PWR Datasheet

MFR RecommendedRFQ

SN74HC258PWT

Texas InstrumentsIn Stock: 934SN74HC258PWT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74HC258DB,112 is determined by the following critical parameters:

• Circuit Configuration: 4 x 2:1 multiplexer topology
• Package Type: 16-pin surface mount (SSOP or TSSOP variants acceptable)
• Voltage Supply Range: Minimum 2V to 6V compatibility
• Output Current: 7.8mA to 8mA range
• Operating Temperature: -40°C minimum to 85°C or higher
• Compliance: ROHS3 compliant, REACH unaffected

Substitute parts must maintain functional equivalence in multiplexer circuit design while accommodating minor variations in package dimensions (SSOP vs. TSSOP) and product status classifications. Texas Instruments 74HC and 74AHC series parts meet these criteria.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SN74HC258PWR (Texas Instruments)

The SN74HC258PWR is the recommended substitute for new designs and production. This part maintains identical electrical specifications to the original 74HC258DB,112, including voltage supply range (2V ~ 6V), output current (7.8mA), and circuit configuration. The part is currently active in production with tape and reel packaging, ensuring supply chain availability. The 16-TSSOP package is functionally equivalent to the original 16-SSOP, with compatible pinout and electrical performance.

Alternative Substitute: SN74AHC157DBR (Texas Instruments)

The SN74AHC157DBR provides an alternative in the original 16-SSOP package format. This part is active and maintains the same circuit topology with marginally higher output current (8mA vs. 7.8mA) and a slightly reduced voltage supply ceiling (5.5V vs. 6V). The 74AHC series offers improved speed characteristics compared to 74HC, making it suitable for applications requiring enhanced performance margins.

Secondary Substitute: SN74HC258PW (Texas Instruments)

The SN74HC258PW is available in tube packaging with identical electrical specifications to the original part. This option is classified as Last Time Buy, indicating limited future availability. Selection should prioritize the active SN74HC258PWR variant for long-term production continuity.

Frequently Asked Questions (FAQ)

Q: Can the SN74HC258PWR replace the 74HC258DB,112 directly?

A: Yes. The SN74HC258PWR is electrically and functionally equivalent. The primary difference is the package format: 16-TSSOP versus 16-SSOP. Both packages are 16-pin surface mount with identical pinout and electrical performance. PCB layout adjustments may be required due to package dimension differences (4.40mm vs. 5.30mm width).

Q: What is the difference between 74HC and 74AHC series multiplexers?

A: The 74AHC series (represented by SN74AHC157DBR) offers improved speed performance compared to the 74HC series. Both maintain the same circuit topology and voltage supply compatibility. The 74AHC variant has a maximum supply voltage of 5.5V versus 6V for 74HC, and output current of 8mA versus 7.8mA. For applications operating at or below 5.5V, the 74AHC variant is functionally interchangeable.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the original 74HC258DB,112.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in three packaging formats: 16-SSOP (SN74AHC157DBR), 16-TSSOP with tube packaging (SN74HC258PW), and 16-TSSOP with tape and reel packaging (SN74HC258PWR). Selection depends on production volume and assembly requirements.

Q: Which substitute has the best long-term availability?

A: The SN74HC258PWR (Active status) and SN74AHC157DBR (Active status) offer the best long-term supply continuity. The SN74HC258PW is classified as Last Time Buy and should not be selected for new production designs requiring extended component availability.