SN74LVC245ADBRG4 Equivalent & Substitute Parts

Part Overview

The SN74LVC245ADBRG4 is a non-inverting transceiver logic IC manufactured by Texas Instruments, designed for 8-bit data bus applications with 3-state output capability. Operating across a supply voltage range of 1.65V to 3.6V, this component is suitable for low-voltage digital systems requiring bidirectional signal buffering. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain functional and electrical compatibility for ongoing production and maintenance applications.

Substiute Parts

SN74LVC245ADBRG4

Texas InstrumentsIn Stock: 2256SN74LVC245ADBRG4 Datasheet

Current PartRFQ

SN74LVC245ADBR

Texas InstrumentsIn Stock: 25190SN74LVC245ADBR Datasheet

Parametric EquivalentRFQ

SN74LVCH245ADBR

Texas InstrumentsIn Stock: 2602SN74LVCH245ADBR Datasheet

Parametric EquivalentRFQ

74LCX245MTC

onsemiIn Stock: 140174LCX245MTC Datasheet

MFR RecommendedRFQ

74LCX245MTCX

onsemiIn Stock: 2774274LCX245MTCX Datasheet

MFR RecommendedRFQ

74LVC2245APW,118

Nexperia USA Inc.In Stock: 1956474LVC2245APW,118 Datasheet

MFR RecommendedRFQ

74LVC245APW,112

Nexperia USA Inc.In Stock: 101874LVC245APW,112 Datasheet

MFR RecommendedRFQ

74LVC245APW,118

NXP SemiconductorsIn Stock: 19051774LVC245APW,118 Datasheet

MFR RecommendedRFQ

74LVCH245APW,118

NXP SemiconductorsIn Stock: 25760674LVCH245APW,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74LVC245ADBRG4 is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

• Logic Type: Transceiver, Non-Inverting
• Number of Elements: 1
• Number of Bits per Element: 8
• Output Type: 3-State
• Current - Output High, Low: 24mA, 24mA
• Voltage - Supply: 1.65V ~ 3.6V (minimum requirement)
• Operating Temperature: -40°C ~ 125°C (TA)
• Package / Case: 20-SSOP or compatible package footprint
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories:

Category 1 - Direct Parametric Equivalents (Identical Electrical and Mechanical Specifications): Parts that match all critical parameters including output current (24mA), supply voltage range (1.65V ~ 3.6V), and operating temperature range (-40°C ~ 125°C). These parts differ only in packaging format (Cut Tape, Tape & Reel, or Tube) and product status.

Category 2 - Functional Equivalents with Parameter Variations: Parts that maintain core transceiver functionality but with specified deviations in output current, supply voltage range, or package dimensions. These require design verification for specific application constraints.

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Recommended):

SN74LVC245ADBR (Texas Instruments) is the primary substitute. This part maintains identical electrical specifications (24mA output current, 1.65V ~ 3.6V supply, -40°C ~ 125°C operating range) and package footprint (20-SSOP). Product status is Active with substantial inventory availability (25100 Pcs). This part requires no design modification and provides the highest compatibility assurance.

Tier 2 - Compatible Alternatives (Verified Compatibility Required):

SN74LVCH245ADBR (Texas Instruments, 74LVCH series) maintains all critical electrical parameters and operates within the same temperature range. The 74LVCH variant represents an enhanced version of the 74LVC logic family with identical performance characteristics for this application. Inventory is available (2581 Pcs) and product status is Active.

74LVC245APW,118 (NXP Semiconductors) provides equivalent electrical performance with 24mA output current and -40°C ~ 125°C operating range. The primary consideration is package transition from 20-SSOP to 20-TSSOP (0.173" width versus 0.209" width). This part has the highest inventory availability (190454 Pcs) and Active product status.

74LVCH245APW,118 (NXP Semiconductors) offers identical electrical specifications to the main part with the same package footprint consideration (20-TSSOP). Inventory is substantial (257577 Pcs) and product status is Active.

Tier 3 - Conditional Substitutes (Application-Dependent):

74LCX245MTCX (onsemi) maintains 24mA output current but operates across 2.0V ~ 3.6V supply range (versus 1.65V minimum for the original part) and -40°C ~ 85°C temperature range (versus 125°C maximum). This part is suitable only for applications not requiring operation below 2.0V or above 85°C. Package is 20-TSSOP. Product status is Active with high inventory (27700 Pcs).

74LVC2245APW,118 (Nexperia USA Inc.) provides reduced output current (12mA versus 24mA) and operates across 1.2V ~ 3.6V supply range. This part is suitable only for applications with lower current drive requirements. Product status is Active with inventory of 19474 Pcs.

74LVC245APW,112 (Nexperia USA Inc.) is Obsolete and should be avoided for new designs despite matching electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can I use 74LVC245APW,118 (NXP) as a direct replacement for SN74LVC245ADBRG4?

A: Yes, with package footprint verification. The electrical specifications are equivalent (24mA output current, -40°C ~ 125°C operating range, 1.2V ~ 3.6V supply). The package transitions from 20-SSOP (0.209" width) to 20-TSSOP (0.173" width). PCB layout modification is required. Verify that the narrower package width accommodates your board design.

Q: What is the difference between 74LVC and 74LVCH series parts?

A: Both series maintain identical electrical performance for this transceiver application. The 74LVCH represents an enhanced variant with improved characteristics. For the SN74LVC245ADBRG4 substitution, SN74LVCH245ADBR provides equivalent functionality with Active product status and available inventory.

Q: Why does 74LCX245MTCX have a lower minimum supply voltage specification (2.0V versus 1.65V)?

A: The 74LCX series from onsemi operates across a different voltage range (2.0V ~ 3.6V) compared to the 74LVC series (1.65V ~ 3.6V). This part is suitable only for applications that do not require operation below 2.0V supply voltage. Verify your application's minimum supply voltage requirement before selection.

Q: What is the significance of the output current rating (24mA versus 12mA)?

A: Output current rating determines the maximum load-driving capability of the transceiver. The original part and most substitutes provide 24mA output current. The 74LVC2245APW,118 provides only 12mA, limiting its use to applications with lower current demands. Verify your circuit's current requirements before selecting this part.

Q: Should I consider the 74LVC245APW,112 (Nexperia, Obsolete) for my design?

A: No. Although this part matches electrical specifications, its Obsolete product status indicates discontinued manufacturing and limited future availability. Select from Active status alternatives to ensure long-term supply chain reliability.

Q: How do packaging formats (Cut Tape, Tape & Reel, Tube, Bulk) affect my selection?

A: Packaging format affects procurement and handling but not electrical performance. Cut Tape & Digi-Reel format is suitable for automated assembly. Tape & Reel format is standard for high-volume production. Tube and Bulk formats are used for lower-volume applications. Select based on your manufacturing process requirements, not electrical compatibility.

Q: Can I use multiple substitute parts interchangeably in the same design?

A: Parts within Tier 1 and Tier 2 (SN74LVC245ADBR, SN74LVCH245ADBR, 74LVC245APW,118 from NXP, 74LVCH245APW,118) are electrically interchangeable with package footprint verification. Tier 3 parts (74LCX245MTCX, 74LVC2245APW,118) have parameter deviations requiring application-specific validation. Do not mix Tier 3 parts without confirming compatibility with your circuit design.