74HC245DB,118 Equivalent & Substitute Parts

Part Overview

The 74HC245DB,118 is a non-inverting transceiver logic IC manufactured by Nexperia USA Inc., designed for 8-bit bidirectional data transfer with 3-state output capability. This component operates across a 2V to 6V supply voltage range and is housed in a 20-SSOP surface mount package. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

74HC245DB,118

Nexperia USA Inc.In Stock: 93574HC245DB,118 Datasheet

Current PartRFQ

74HC245PW,118

Nexperia USA Inc.In Stock: 1396674HC245PW,118 Datasheet

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SN74HC245DBR

Texas InstrumentsIn Stock: 5227SN74HC245DBR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HC245DB,118 are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine valid substitution:

Core Electrical Parameters:

• Logic Type: Transceiver, Non-Inverting
• Number of Elements: 1
• Number of Bits per Element: 8
• Output Type: 3-State
• Current - Output High, Low: 7.8mA, 7.8mA
• Voltage - Supply: 2V ~ 6V

Mechanical Parameters:

• Mounting Type: Surface Mount
• Base Product Number: 74HC245

Substitute parts are grouped into two categories based on package compatibility:

Group 1 - Same Package (20-SSOP): Parts maintaining identical package dimensions and pinout, enabling direct board-level replacement without layout modification.

Group 2 - Alternative Package (20-TSSOP): Parts with equivalent electrical specifications but different package footprint, requiring PCB layout adjustment for implementation.

Parameter Comparison

Engineering Selection Recommendations

SN74HC245DBR (Texas Instruments) is the primary substitute for direct replacement applications. This part maintains identical package geometry (20-SSOP), electrical specifications, and RoHS3 compliance. The operating temperature range is -40°C to 85°C, which is narrower than the original part's -40°C to 125°C specification. Selection of this substitute is appropriate for applications where the maximum ambient temperature does not exceed 85°C.

74HC245PW,118 (Nexperia USA Inc.) provides electrical equivalence with identical operating temperature range (-40°C to 125°C) and RoHS3 compliance. This part uses a 20-TSSOP package with reduced width (4.40mm versus 5.30mm), requiring PCB layout modification. This substitute is suitable for space-constrained designs where package footprint optimization is a design objective.

Both substitutes are currently in active production status, ensuring long-term availability and supply chain stability compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can SN74HC245DBR be used as a direct replacement for 74HC245DB,118?

A: Yes, for applications with maximum operating temperatures not exceeding 85°C. The SN74HC245DBR maintains identical package dimensions, pinout, and electrical specifications. Applications requiring operation above 85°C require the 74HC245PW,118 alternative.

Q: What is the primary difference between 74HC245PW,118 and 74HC245DB,118?

A: The 74HC245PW,118 uses a 20-TSSOP package (4.40mm width) compared to the 20-SSOP package (5.30mm width) of the original part. Electrical specifications and operating temperature range are identical. PCB layout modification is required for implementation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both 74HC245PW,118 and SN74HC245DBR are ROHS3 compliant, matching the compliance status of the original 74HC245DB,118.

Q: What is the moisture sensitivity level for these parts?

A: All three parts have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements.

Q: Can I use 74HC245PW,118 in existing PCB designs without modification?

A: No. The 74HC245PW,118 requires PCB layout modification due to different package footprint (20-TSSOP versus 20-SSOP). For direct board-level replacement without layout changes, use SN74HC245DBR.