74ACT245PC Equivalent & Substitute Parts

Part Overview

The 74ACT245PC is an octal bus transceiver with non-inverting logic, featuring 3-state output capability. Manufactured by onsemi, this 20-DIP through-hole component operates across a 4.5V to 5.5V supply voltage range with 24mA output drive capability. The part is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement continuity.

Substiute Parts

74ACT245PC

onsemiIn Stock: 173274ACT245PC Datasheet

Current PartRFQ

CD74ACT245E

Harris CorporationIn Stock: 1883CD74ACT245E Datasheet

DirectRFQ

SN74ACT245N

Texas InstrumentsIn Stock: 10460SN74ACT245N Datasheet

Parametric EquivalentRFQ

SN74ACT245NE4

Texas InstrumentsIn Stock: 1031SN74ACT245NE4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACT245PC is determined by strict equivalence across the following 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
• Package / Case: 20-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Series: 74ACT

All identified substitutes meet these core electrical and mechanical requirements. Operating temperature ranges may vary within acceptable design margins. Product status and compliance certifications are secondary considerations that inform selection priority but do not affect functional substitutability.

Parameter Comparison

Engineering Selection Recommendations

For new designs and ongoing procurement, SN74ACT245N or SN74ACT245NE4 (both Texas Instruments) are preferred substitutes due to active product status and ROHS3 compliance. Both parts maintain identical electrical specifications and package footprint compatibility with the 74ACT245PC.

CD74ACT245E (Harris Corporation) provides functional equivalence with extended operating temperature range (-55°C ~ 125°C) but carries obsolete product status and RoHS non-compliance designation. This part is suitable only for legacy system maintenance where temperature performance requirements exceed standard specifications.

All three substitutes are pin-compatible and electrically interchangeable within the specified supply voltage and output current parameters.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT245N directly replace 74ACT245PC in existing designs? A: Yes. Both parts share identical logic type, bit configuration, output drive capability, supply voltage range, and 20-DIP package footprint. Pin-for-pin substitution is valid.

Q: What is the difference between SN74ACT245N and SN74ACT245NE4? A: Both are Texas Instruments 74ACT245 transceivers with identical electrical specifications and package. The NE4 suffix indicates a specific product variant. Selection between them depends on supplier availability and internal part numbering conventions.

Q: Why is CD74ACT245E listed if it is RoHS non-compliant? A: CD74ACT245E meets all core electrical and mechanical substitution criteria. RoHS compliance status is a regulatory consideration for new designs but does not affect functional compatibility. This part remains valid for legacy applications or environments where RoHS compliance is not mandated.

Q: Does the extended temperature range of CD74ACT245E (-55°C ~ 125°C) provide an advantage? A: Extended temperature range is beneficial only if your application requires operation beyond the standard -40°C ~ 85°C specification. For standard industrial and commercial applications, this extended range provides no functional advantage.

Q: Are all substitutes available in the same packaging format? A: Yes. All listed substitutes use 20-DIP (0.300", 7.62mm) through-hole packaging, ensuring mechanical and electrical compatibility with existing PCB layouts.