74ACT245MTC Equivalent & Substitute Parts

Part Overview

The 74ACT245MTC is a non-inverting transceiver logic IC manufactured by onsemi, featuring 1 element with 8 bits per element and 3-state output capability. This component operates within a 4.5V to 5.5V supply voltage range and is housed in a 20-TSSOP surface mount package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

74ACT245MTC

onsemiIn Stock: 195274ACT245MTC Datasheet

Current PartRFQ

74ACT245MTCX

onsemiIn Stock: 395074ACT245MTCX Datasheet

MFR RecommendedRFQ

MC74ACT245DTR2G

onsemiIn Stock: 5441MC74ACT245DTR2G Datasheet

SimilarRFQ

MC74ACT245DTG

onsemiIn Stock: 1677MC74ACT245DTG Datasheet

Parametric EquivalentRFQ

SN74ACT245PWR

Texas InstrumentsIn Stock: 3994SN74ACT245PWR Datasheet

DirectRFQ

CD74ACT245SM96

Texas InstrumentsIn Stock: 778CD74ACT245SM96 Datasheet

SimilarRFQ

SN74ACT245DBR

Texas InstrumentsIn Stock: 5490SN74ACT245DBR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74ACT245MTC is determined by strict equivalence across the following critical 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: 4.5V ~ 5.5V
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into three categories based on their relationship to the main part:

MFR Recommended Substitute: 74ACT245MTCX (onsemi) — identical electrical and mechanical specifications with active product status and improved packaging availability.

Similar Manufacturer Substitutes: MC74ACT245DTR2G, MC74ACT245DTG (onsemi), and SN74ACT245DBR (Texas Instruments) — maintain core electrical parameters with variations in packaging format and product status.

Parametric Equivalent: CD74ACT245SM96 (Texas Instruments) — meets all electrical requirements with extended operating temperature range (-55°C ~ 125°C) and alternative package format (20-SSOP).

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: 74ACT245MTCX is the manufacturer-recommended substitute, offering identical electrical and mechanical specifications to the 74ACT245MTC with active product status. This part maintains the 20-TSSOP package format and is available in Cut Tape and Digi-Reel packaging options.

Alternative from onsemi: MC74ACT245DTR2G provides equivalent functionality with Tape & Reel packaging and active product status. This variant is suitable for high-volume production environments requiring automated assembly processes.

Cross-Manufacturer Alternatives: SN74ACT245PWR (Texas Instruments) and SN74ACT245DBR (Texas Instruments) deliver equivalent electrical performance with active product status. SN74ACT245PWR maintains the 20-TSSOP package, while SN74ACT245DBR uses the 20-SSOP package format. Both are ROHS3 compliant and MSL Level 1.

Extended Temperature Range Option: CD74ACT245SM96 (Texas Instruments) extends the operating temperature range to -55°C ~ 125°C while maintaining all core electrical parameters. This part uses the 20-SSOP package and is suitable for applications requiring enhanced thermal performance.

Frequently Asked Questions (FAQ)

Q: Can 74ACT245MTCX be used as a direct replacement for 74ACT245MTC?

A: Yes. The 74ACT245MTCX maintains identical electrical specifications, output current ratings, supply voltage range, and operating temperature range. Both use the 20-TSSOP package. The primary difference is product status: 74ACT245MTCX is active while 74ACT245MTC is obsolete.

Q: What is the difference between 20-TSSOP and 20-SSOP packages?

A: Both are surface mount packages with 20 pins. The 20-TSSOP has a width of 0.173" (4.40mm), while the 20-SSOP has a width of 0.209" (5.30mm). PCB layout and footprint designs differ between these packages. Verify your design accommodates the selected package before substitution.

Q: Are Texas Instruments parts (SN74ACT245PWR, SN74ACT245DBR) compatible with onsemi designs?

A: Yes. Both manufacturers produce 74ACT series logic components with identical electrical specifications. All substitute parts listed maintain the same logic type, output current ratings, supply voltage, and operating temperature range as the original 74ACT245MTC.

Q: Does CD74ACT245SM96 work in applications designed for 74ACT245MTC?

A: Yes, with consideration for package differences. CD74ACT245SM96 uses the 20-SSOP package instead of 20-TSSOP, requiring PCB layout modification. The extended operating temperature range (-55°C ~ 125°C) provides additional thermal margin compared to the standard -40°C ~ 85°C range.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: Cut Tape (CT) & Digi-Reel for automated assembly, Tape & Reel (TR) for high-volume production, and Tube for manual assembly. Select packaging based on your production volume and assembly process requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed—74ACT245MTCX, MC74ACT245DTR2G, MC74ACT245DTG, SN74ACT245PWR, CD74ACT245SM96, and SN74ACT245DBR—are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating.