74HC245PW,112 Equivalent & Substitute Parts

Part Overview

The 74HC245PW,112 is a non-inverting bus transceiver logic integrated circuit manufactured by Nexperia USA Inc. in a 20-TSSOP surface mount package. This component functions as a 1-element, 8-bit per element transceiver with 3-state output capability, operating across a 2V to 6V supply voltage range and temperature range of -40°C to 125°C.

The 74HC245PW,112 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where this base product number is no longer readily available from the original manufacturer.

Substiute Parts

74HC245PW,112

Nexperia USA Inc.In Stock: 186074HC245PW,112 Datasheet

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MC74HC245ADTG

onsemiIn Stock: 58917MC74HC245ADTG Datasheet

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MC74HC245ADTR2G

onsemiIn Stock: 2291MC74HC245ADTR2G Datasheet

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MM74HC245AMTC

Fairchild SemiconductorIn Stock: 2402MM74HC245AMTC Datasheet

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MM74HC245AMTCX

Fairchild SemiconductorIn Stock: 9140MM74HC245AMTCX Datasheet

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SN74HC245DBR

Texas InstrumentsIn Stock: 5227SN74HC245DBR Datasheet

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SN74HC245PW

Texas InstrumentsIn Stock: 2303SN74HC245PW Datasheet

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SN74HC245PWR

Texas InstrumentsIn Stock: 2446SN74HC245PWR Datasheet

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SN74HC245PWT

Texas InstrumentsIn Stock: 816SN74HC245PWT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC245PW,112 is determined by the following critical parameters that must remain consistent across equivalent parts:

Mandatory Matching Parameters:

• Base product number: 74HC245
• Logic type: Transceiver, Non-Inverting
• Number of elements: 1
• Number of bits per element: 8
• Output type: 3-State
• Current output specifications: 7.8mA (high and low)
• Voltage supply range: 2V ~ 6V
• Mounting type: Surface Mount
• Package case: 20-TSSOP (0.173", 4.40mm Width)

Acceptable Variations:

• Manufacturer: Different manufacturers produce equivalent 74HC245 logic transceivers
• Packaging format: Tube, Tape & Reel (TR), or Cut Tape (CT) & Digi-Reel® formats are interchangeable for the same package type
• Operating temperature range: Extended ranges (-55°C to 125°C) are acceptable as they encompass the original specification
• Product status: Active parts are preferred over obsolete or discontinued parts for new designs

Substitute parts must maintain electrical compatibility through identical output current ratings, supply voltage specifications, and functional logic characteristics. Package dimensions and mounting type must remain consistent to ensure PCB layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (20-TSSOP Package, Active Status):

MC74HC245ADTG (onsemi) and SN74HC245PWR (Texas Instruments) are the preferred substitutes for the 74HC245PW,112. Both parts are currently active, ROHS3 compliant, and maintain identical electrical specifications. MC74HC245ADTG offers an extended operating temperature range of -55°C to 125°C, providing additional thermal margin. SN74HC245PWR is supplied in Cut Tape & Digi-Reel® format and maintains the standard -40°C to 85°C operating range.

Secondary Substitutes (20-TSSOP Package, Active Status):

MC74HC245ADTR2G (onsemi) is functionally equivalent to MC74HC245ADTG but supplied in Tape & Reel format. MM74HC245AMTC and MM74HC245AMTCX (Fairchild Semiconductor) are active alternatives with identical electrical characteristics, though operating temperature is limited to -40°C to 85°C.

Package Variation (20-SSOP Package):

SN74HC245DBR (Texas Instruments) is electrically equivalent but uses a 20-SSOP package (0.209", 5.30mm Width) instead of 20-TSSOP. This part is suitable only if PCB layout accommodates the wider package footprint.

Discontinued Parts (Not Recommended for New Designs):

SN74HC245PW and SN74HC245PWT (Texas Instruments) are discontinued at DiGi Electronics and should not be selected for new production designs despite functional equivalence.

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original part specification.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 74HC245PW,112 with any 74HC245 variant?

A: No. Substitution is limited to parts that maintain the 20-TSSOP package format, 3-state output configuration, 7.8mA output current rating, and 2V to 6V supply voltage specification. Package type (TSSOP vs. SSOP) differences affect PCB compatibility and must be verified against your design layout.

Q: What is the difference between 20-TSSOP and 20-SSOP packages?

A: The 20-TSSOP package has a width of 0.173" (4.40mm), while the 20-SSOP package has a width of 0.209" (5.30mm). These are not pin-compatible footprints. Substitution between these package types requires PCB redesign and is not recommended for direct replacement.

Q: Does operating temperature range affect substitution compatibility?

A: Operating temperature range does not prevent substitution if the substitute part's range encompasses or exceeds the original specification. For example, MC74HC245ADTG (-55°C to 125°C) is compatible with designs requiring -40°C to 125°C operation. However, parts with narrower ranges (such as -40°C to 85°C) may not be suitable for applications requiring the full -40°C to 125°C range of the original part.

Q: Are Fairchild Semiconductor MM74HC245 parts equivalent to Texas Instruments SN74HC245 parts?

A: Yes. Both manufacturers produce functionally equivalent 74HC245 transceivers with identical electrical specifications, output current ratings, and supply voltage ranges. Differences exist only in operating temperature ranges and packaging formats. Selection should be based on product availability, temperature requirements, and packaging format compatibility with your design.

Q: What packaging formats are available for 74HC245 substitutes?

A: Available formats include Tube, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel®. These formats represent different quantity packaging and handling methods for the same component. Selection depends on procurement volume and assembly line requirements. The underlying component and package type (TSSOP or SSOP) remain the determining factors for electrical and mechanical compatibility.

Q: Is the MC74HC245ADTR2G different from MC74HC245ADTG?

A: Both parts are electrically and functionally identical. The difference is packaging format: MC74HC245ADTG is supplied in Tube format, while MC74HC245ADTR2G is supplied in Tape & Reel format. Selection depends on procurement and assembly requirements rather than technical performance.

Q: Why is the 74HC245PW,112 classified as obsolete?

A: Obsolescence indicates the original manufacturer (Nexperia USA Inc.) has discontinued production. Active equivalent parts from other manufacturers (onsemi, Texas Instruments, Fairchild Semiconductor) provide direct functional replacement and are recommended for new designs and ongoing production support.