SN74AC245IDWREP Equivalent & Substitute Parts

Part Overview

The SN74AC245IDWREP is a non-inverting transceiver logic integrated circuit manufactured by Texas Instruments. This 20-SOIC surface mount device functions as a 1-element, 8-bit per element transceiver with 3-state output capability, operating across a 2V to 6V supply voltage range. The device is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or when alternative packaging formats better suit manufacturing requirements while maintaining identical electrical and mechanical specifications.

Substiute Parts

SN74AC245IDWREP

Texas InstrumentsIn Stock: 841SN74AC245IDWREP Datasheet

Current PartRFQ

SN74AC245DWR

Texas InstrumentsIn Stock: 3285SN74AC245DWR Datasheet

Parametric EquivalentRFQ

MC74AC245DWR2G

onsemiIn Stock: 4763MC74AC245DWR2G Datasheet

DirectRFQ

MC74AC245DWG

onsemiIn Stock: 2190MC74AC245DWG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74AC245IDWREP are qualified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic is determined by the following key parameters:

• 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: 2V ~ 6V
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount
• Base Product Number: 74AC245

All identified substitute parts maintain identical electrical performance and mechanical compatibility. Variations in packaging format (Tape & Reel, Cut Tape & Digi-Reel, or Tube) and manufacturer (Texas Instruments or onsemi) do not affect functional equivalence. Moisture Sensitivity Level differences are noted but do not preclude substitution in standard operating environments.

Parameter Comparison

Engineering Selection Recommendations

All four parts—SN74AC245IDWREP, SN74AC245DWR, MC74AC245DWR2G, and MC74AC245DWG—are functionally equivalent and maintain Active product status. Selection between these parts should be based on the following criteria:

Texas Instruments SN74AC245IDWREP and SN74AC245DWR are preferred when MSL 1 (Unlimited) moisture sensitivity is required, indicating superior moisture resistance for extended storage or high-humidity environments. Both are ROHS3 compliant. The primary difference is packaging format: SN74AC245IDWREP is supplied in Tape & Reel format, while SN74AC245DWR is supplied in Cut Tape & Digi-Reel format.

onsemi MC74AC245DWR2G and MC74AC245DWG are functionally equivalent alternatives with MSL 3 (168 Hours) moisture sensitivity rating. Both are ROHS3 compliant. MC74AC245DWR2G is supplied in Cut Tape & Digi-Reel format, while MC74AC245DWG is supplied in Tube format. These parts are suitable for applications where standard moisture handling procedures are followed.

All parts operate identically across the specified electrical parameters: 2V to 6V supply voltage, -40°C to 85°C operating temperature range, 24mA output current capability, and 20-SOIC package footprint.

Frequently Asked Questions (FAQ)

Q: Can SN74AC245DWR be used as a direct replacement for SN74AC245IDWREP?

A: Yes. Both parts are manufactured by Texas Instruments, share identical electrical specifications, and are housed in the same 20-SOIC package. The only difference is packaging format: SN74AC245IDWREP uses Tape & Reel, while SN74AC245DWR uses Cut Tape & Digi-Reel. Both maintain MSL 1 moisture sensitivity rating.

Q: Are onsemi MC74AC245DWR2G and MC74AC245DWG suitable replacements for the Texas Instruments SN74AC245IDWREP?

A: Yes. Both onsemi parts are electrically and mechanically equivalent. All critical parameters—logic type, bit configuration, output type, current ratings, voltage range, temperature range, and package footprint—are identical. The difference is MSL rating: onsemi parts are MSL 3 (168 Hours) versus Texas Instruments MSL 1 (Unlimited). Standard moisture handling procedures accommodate MSL 3 components.

Q: What is the difference between the packaging formats offered?

A: Tape & Reel (TR) format is optimized for high-volume automated assembly. Cut Tape & Digi-Reel format provides flexibility for mixed-volume production. Tube format is suitable for lower-volume applications or manual assembly. All formats contain the same component with identical electrical performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four parts—SN74AC245IDWREP, SN74AC245DWR, MC74AC245DWR2G, and MC74AC245DWG—are ROHS3 compliant and REACH unaffected.

Q: What does MSL rating mean for component selection?

A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be exposed to moisture and temperature conditions before soldering. MSL 1 (Unlimited) allows indefinite storage under controlled conditions. MSL 3 (168 Hours) requires soldering within 168 hours of moisture exposure. Selection depends on storage and handling procedures in your manufacturing environment.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes. All substitute parts use the identical 20-SOIC (0.295", 7.50mm Width) package footprint and pin configuration. No PCB layout modifications are required for substitution.