74HC245DB,112 Equivalent & Substitute Parts

Part Overview

The 74HC245DB,112 is a non-inverting bus 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 range and is housed in a 20-SSOP surface mount package. The part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. Substitute parts maintain identical functional specifications while offering active product status or alternative packaging options from qualified manufacturers.

Substiute Parts

74HC245DB,112

Nexperia USA Inc.In Stock: 81074HC245DB,112 Datasheet

Current PartRFQ

74HC245PW,118

Nexperia USA Inc.In Stock: 1396674HC245PW,118 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 eligibility for the 74HC245DB,112 is determined by the following critical parameters:

Functional Equivalence Requirements:

• Logic type: Transceiver, Non-Inverting
• Number of elements: 1
• Bits per element: 8
• Output type: 3-State
• Output current: 7.8mA (high and low)
• Supply voltage range: 2V ~ 6V
• Base product number: 74HC245

Package Compatibility: Substitutes are grouped into two categories based on surface mount package type:

• 20-SSOP (0.209", 5.30mm Width) — direct footprint replacement
• 20-TSSOP (0.173", 4.40mm Width) — alternative package with different PCB footprint

Manufacturer Qualification: All substitute parts are sourced from qualified semiconductor manufacturers (Nexperia USA Inc., Texas Instruments, Fairchild Semiconductor) and maintain ROHS3 compliance and EAR99 export classification.

Parameter Comparison

Engineering Selection Recommendations

For Direct Footprint Replacement (20-SSOP Package): SN74HC245DBR from Texas Instruments is the primary substitute for the 74HC245DB,112. Both parts use the 20-SSOP package (0.209", 5.30mm width) and require no PCB layout modifications. SN74HC245DBR maintains active product status with 5214 units in stock. The operating temperature range is reduced to -40°C ~ 85°C compared to the original -40°C ~ 125°C specification; this difference must be evaluated against application requirements.

For Alternative Package (20-TSSOP): When PCB redesign is acceptable, 74HC245PW,118 (Nexperia USA Inc.) or SN74HC245PWR (Texas Instruments) provide active product status with higher inventory availability (13879 and 2398 units respectively). The 20-TSSOP package is narrower (0.173", 4.40mm width) and requires PCB footprint modification. Both parts maintain identical electrical specifications and ROHS3 compliance.

Compliance Considerations: All recommended substitutes maintain ROHS3 compliance, EAR99 export classification, and MSL 1 moisture sensitivity rating. Selection should prioritize parts with active product status to ensure long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can SN74HC245DBR replace 74HC245DB,112 without PCB modifications? A: Yes. Both parts use the 20-SSOP package with identical footprint dimensions (0.209", 5.30mm width). No PCB layout changes are required for direct substitution.

Q: What is the difference between 20-SSOP and 20-TSSOP packages? A: The 20-SSOP package measures 0.209" (5.30mm) in width, while the 20-TSSOP package measures 0.173" (4.40mm) in width. These are different physical packages requiring different PCB footprints. TSSOP is a thinner shrink package variant.

Q: Does the reduced operating temperature range of SN74HC245DBR affect compatibility? A: SN74HC245DBR operates from -40°C to 85°C, compared to the original 74HC245DB,112 range of -40°C to 125°C. Compatibility depends on your application's maximum operating temperature requirement. If your design operates below 85°C, this part is fully compatible.

Q: Why is 74HC245DB,112 listed as obsolete? A: The original part has been discontinued by the manufacturer. Active substitutes from Nexperia USA Inc. and Texas Instruments provide equivalent functionality with ongoing supply availability.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and are suitable for applications requiring RoHS certification.

Q: Which substitute offers the best inventory availability? A: 74HC245PW,118 from Nexperia USA Inc. has the highest inventory with 13879 units in stock. This part is active and ROHS3 compliant, though it requires PCB redesign due to the 20-TSSOP package.