74LVC245AD,112 Equivalent & Substitute Parts

Part Overview

The 74LVC245AD,112 is a non-inverting transceiver logic IC manufactured by Nexperia USA Inc., designed for 8-bit data bus applications with 3-state output capability. This component operates across a supply voltage range of 1.2V to 3.6V and is housed in a 20-SOIC package. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations.

Substiute Parts

74LVC245AD,112

Nexperia USA Inc.In Stock: 111474LVC245AD,112 Datasheet

Current PartRFQ

MC74LVX245DWR2G

onsemiIn Stock: 1983MC74LVX245DWR2G Datasheet

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SN74LVC245ADW

Texas InstrumentsIn Stock: 2032SN74LVC245ADW Datasheet

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SN74LVC245ADWR

Texas InstrumentsIn Stock: 100284SN74LVC245ADWR Datasheet

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SN74LVCH245ADW

Texas InstrumentsIn Stock: 1674SN74LVCH245ADW Datasheet

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SN74LVCH245ADWR

Texas InstrumentsIn Stock: 22136SN74LVCH245ADWR Datasheet

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SN74LVCZ245ADWR

Texas InstrumentsIn Stock: 1168SN74LVCZ245ADWR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74LVC245AD,112 is determined by the following critical parameters:

Core Functional Requirements:

• Logic type: Transceiver, Non-Inverting
• Number of elements: 1
• Bits per element: 8
• Output type: 3-State
• Package: 20-SOIC (0.295", 7.50mm Width)

Electrical Compatibility Criteria:

• Supply voltage range must encompass or overlap with 1.2V ~ 3.6V
• Output current capability: 24mA (high and low)
• Operating temperature range: -40°C ~ 125°C

Compliance Requirements:

• RoHS3 compliance
• Surface mount mounting type

Substitute parts are grouped into two categories based on electrical performance alignment:

Category A - Full Parameter Alignment (Texas Instruments 74LVC Series): Parts that maintain identical output current (24mA), supply voltage range (1.65V ~ 3.6V minimum), and operating temperature (-40°C ~ 125°C). These include SN74LVC245ADW, SN74LVC245ADWR, SN74LVCH245ADW, and SN74LVCH245ADWR.

Category B - Reduced Performance (onsemi 74LVX Series & Texas Instruments 74LVCZ Series): Parts with reduced output current (4mA for 74LVX) or narrower operating temperature range (-40°C ~ 85°C for 74LVCZ), or higher minimum supply voltage (2V or 2.7V). These include MC74LVX245DWR2G and SN74LVCZ245ADWR.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for Direct Replacement):

SN74LVC245ADW and SN74LVC245ADWR from Texas Instruments are the preferred substitutes. Both maintain the same output current specification (24mA), identical operating temperature range (-40°C ~ 125°C), and MSL rating (1). The supply voltage minimum is 1.65V versus the original 1.2V, which is acceptable for most applications operating at standard logic levels. These parts are in active production status with substantial inventory availability.

Secondary Substitutes (Conditional Use):

SN74LVCH245ADW and SN74LVCH245ADWR offer identical electrical performance to the primary substitutes with the same output current, temperature range, and MSL rating. The 74LVCH variant provides enhanced noise immunity characteristics while maintaining full compatibility with the original part's functional requirements.

SN74LVCZ245ADWR is suitable only for applications where the operating temperature does not exceed 85°C and the minimum supply voltage is 2.7V or higher. This part maintains the 24mA output current and MSL rating but has a narrower temperature operating window.

Not Recommended for Direct Replacement:

MC74LVX245DWR2G from onsemi exhibits significantly reduced output current (4mA versus 24mA), higher MSL rating (3 versus 1), and narrower operating temperature range (-40°C ~ 85°C). This part is suitable only for low-current applications and should not be used as a general substitute without circuit redesign analysis.

Frequently Asked Questions (FAQ)

Q: Can I use SN74LVC245ADWR as a direct replacement for 74LVC245AD,112?

A: Yes. SN74LVC245ADWR is a direct functional equivalent. Both parts are non-inverting transceivers with 8-bit capacity, 3-state output, 24mA output current, and identical operating temperature range. The supply voltage minimum differs slightly (1.65V versus 1.2V), but this does not affect compatibility in standard logic applications. The primary difference is packaging format: the original uses 20-SO while the substitute uses 20-SOIC, though both are mechanically and electrically compatible in the same footprint.

Q: What is the difference between 74LVC, 74LVCH, and 74LVCZ variants?

A: All three variants maintain the same core transceiver functionality and output current specifications. The 74LVCH variant provides enhanced noise immunity. The 74LVCZ variant has a higher minimum supply voltage (2.7V) and narrower operating temperature range (-40°C ~ 85°C). Selection depends on your specific application requirements for temperature range and supply voltage constraints.

Q: Why is MC74LVX245DWR2G not recommended as a substitute?

A: The MC74LVX245DWR2G has significantly reduced output current capability (4mA versus 24mA). This reduction may cause signal integrity issues in applications requiring the full 24mA drive capability. Additionally, it has a higher moisture sensitivity level (3 versus 1) and narrower operating temperature range. Use this part only if your circuit design has been specifically validated for reduced output current.

Q: Does packaging format affect substitution compatibility?

A: The original 74LVC245AD,112 uses 20-SO packaging, while most substitutes use 20-SOIC packaging. Both are 20-pin SOIC packages with identical 0.295" width and 7.50mm body dimensions. They are mechanically and electrically compatible on the same PCB footprint. Verify your PCB design accepts both package designations.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance, matching the original part's environmental certification status.

Q: What inventory considerations should I account for?

A: SN74LVC245ADWR has the highest inventory availability (100,200 pieces), followed by SN74LVCH245ADWR (22,063 pieces). Both Texas Instruments parts are in active production. The original Nexperia part is obsolete with limited remaining stock (1,033 pieces). For new designs or long-term supply assurance, select from the active production substitutes.