CD74AC245EG4 Equivalent & Substitute Parts

Part Overview

The CD74AC245EG4 is a non-inverting transceiver logic integrated circuit manufactured by Texas Instruments, designed for 8-bit data bus applications with 3-state output capability. This device operates across a supply voltage range of 1.5V to 5.5V and is housed in a 20-pin DIP package suitable for through-hole mounting.

The CD74AC245EG4 is currently discontinued at DiGi Electronics. Equivalent and substitute parts are available to maintain design continuity and support ongoing production requirements.

Substiute Parts

CD74AC245EG4

Texas InstrumentsIn Stock: 770CD74AC245EG4 Datasheet

Current PartRFQ

CD74AC245E

Harris CorporationIn Stock: 11535CD74AC245E Datasheet

MFR RecommendedRFQ

CD74AC623E

Texas InstrumentsIn Stock: 1253CD74AC623E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74AC245EG4 is determined by 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: 1.5V ~ 5.5V
• Operating Temperature: -55°C ~ 125°C (TA)
• Package / Case: 20-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole

Two substitute parts meet these electrical and mechanical specifications: the CD74AC245E (MFR Recommended) and the CD74AC623E (Parametric Equivalent).

Parameter Comparison

Engineering Selection Recommendations

CD74AC245E (MFR Recommended Substitute): This part is the manufacturer-recommended equivalent and maintains full electrical and mechanical compatibility with the CD74AC245EG4. However, the CD74AC245E carries an Obsolete product status and is RoHS non-compliant, which may present constraints for new designs or applications subject to RoHS regulations.

CD74AC623E (Parametric Equivalent): This part is the preferred substitute for new designs and ongoing production. The CD74AC623E maintains identical electrical specifications and package configuration while offering Active product status and ROHS3 compliance. This part is suitable for applications requiring current regulatory compliance and long-term availability assurance.

Selection between these substitutes depends on design requirements, regulatory compliance mandates, and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can the CD74AC245E and CD74AC623E be used interchangeably with the CD74AC245EG4?

A: Both parts meet the electrical and mechanical specifications of the CD74AC245EG4. Pin configuration, voltage supply range, output current ratings, and package dimensions are identical. Direct substitution is electrically valid.

Q: What is the difference between the CD74AC245E and CD74AC623E?

A: Both parts are parametrically equivalent in electrical function and package form. The primary differences are product status (CD74AC245E is Obsolete; CD74AC623E is Active) and regulatory compliance (CD74AC245E is RoHS non-compliant; CD74AC623E is ROHS3 compliant).

Q: Which substitute should I select for a new design?

A: The CD74AC623E is the appropriate choice for new designs due to its Active product status and ROHS3 compliance certification, ensuring regulatory alignment and supply chain continuity.

Q: Are there any packaging differences between these parts?

A: All three parts use identical 20-DIP (0.300", 7.62mm) through-hole packaging. No PCB layout modifications are required for substitution.

Q: What is the operating temperature range for these substitutes?

A: All three parts operate across the same temperature range: -55°C to 125°C (TA).