SN74LVC245ADB Equivalent & Substitute Parts

Part Overview

The SN74LVC245ADB is a non-inverting transceiver logic integrated circuit manufactured by Texas Instruments. This device functions as a 1-element, 8-bit per element transceiver with 3-state output capability, designed for low-voltage digital signal buffering and bus interface applications. The part is currently in active production status with 910 pieces available in new original inventory. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and functional characteristics align with the original specification, enabling component procurement flexibility and supply chain continuity.

Substiute Parts

SN74LVC245ADB

Texas InstrumentsIn Stock: 1009SN74LVC245ADB Datasheet

Current PartRFQ

SN74LVCH245ADB

Texas InstrumentsIn Stock: 9099SN74LVCH245ADB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74LVC245ADB are identified based on strict equivalence across the following critical parameters:

Functional Equivalence Criteria:

• Logic type: Transceiver, Non-Inverting
• Number of elements: 1
• Number of bits per element: 8
• Output type: 3-State

Electrical Equivalence Criteria:

• Current output specifications: 24mA high, 24mA low
• Supply voltage range: 1.65V ~ 3.6V
• Operating temperature range: -40°C ~ 125°C

Mechanical Equivalence Criteria:

• Package type: 20-SSOP
• Package dimensions: 0.209" width, 5.30mm width
• Mounting type: Surface Mount

The SN74LVCH245ADB qualifies as a parametric equivalent substitute because it maintains identical electrical performance, functional architecture, and mechanical compatibility across all specified parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the SN74LVC245ADB and SN74LVCH245ADB are active production components from Texas Instruments with identical electrical specifications and mechanical packaging. Selection between these parts should be based on the following factors:

Compliance Considerations: The SN74LVC245ADB carries ROHS3 compliance certification with MSL rating of 1 (Unlimited moisture sensitivity level). The SN74LVCH245ADB does not have applicable RoHS status documentation provided but carries an MSL rating of 3 (168 Hours).

Inventory Availability: The SN74LVC245ADB has 910 pieces in new original stock. The SN74LVCH245ADB has 8991 pieces in new original stock, providing significantly greater availability for high-volume procurement requirements.

Supply Chain Continuity: When the primary part number SN74LVC245ADB experiences supply constraints, the SN74LVCH245ADB serves as a direct functional replacement without circuit redesign or re-qualification requirements, provided that the application environment and storage conditions are compatible with the MSL 3 rating.

Frequently Asked Questions (FAQ)

Q: Can the SN74LVCH245ADB be used as a direct replacement for the SN74LVC245ADB in existing designs?

A: Yes. Both parts are identical in logic function, electrical performance, output drive capability, supply voltage range, operating temperature range, and 20-SSOP package dimensions. No circuit modifications are required for substitution.

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

A: The series designation reflects internal design variations within the Texas Instruments product line. However, for the 245 transceiver function, both series maintain identical electrical specifications and pin compatibility as specified in this reference.

Q: Are there any moisture sensitivity considerations when substituting these parts?

A: The SN74LVC245ADB has MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The SN74LVCH245ADB has MSL 3 (168 Hours), requiring storage in controlled humidity environments and limiting floor life after moisture exposure. Applications in high-humidity environments or with extended storage periods should account for this difference.

Q: Do both parts use the same 20-SSOP package footprint?

A: Yes. Both the SN74LVC245ADB and SN74LVCH245ADB use the 20-SSOP package with identical 0.209" width and 5.30mm dimensions. PCB footprints and assembly processes are interchangeable.

Q: Which part should be selected for new designs?

A: Selection should be based on supply availability, compliance requirements, and environmental storage conditions. Both parts are active production components suitable for new design implementation. The SN74LVCH245ADB offers greater inventory availability, while the SN74LVC245ADB provides unlimited moisture sensitivity rating.