CD74HC245E-NG Equivalent & Substitute Parts

Part Overview

The CD74HC245E-NG is a non-inverting transceiver logic integrated circuit manufactured by Texas Instruments. This component functions as a 1-element, 8-bit per element transceiver with 3-state output capability, designed for digital signal buffering and bus interface applications. The part is currently in active production status with 763 units available in new original inventory. The CD74HC245E-NG operates across a wide supply voltage range and temperature spectrum, making it suitable for diverse industrial and commercial applications. Identifying equivalent and substitute parts becomes necessary when the primary manufacturer part becomes unavailable, when alternative sourcing is required for cost optimization, or when design flexibility demands component interchangeability within specified electrical and mechanical parameters.

Substiute Parts

CD74HC245E-NG

Texas InstrumentsIn Stock: 784CD74HC245E-NG Datasheet

Current PartRFQ

CD74HC245E

Harris CorporationIn Stock: 1656CD74HC245E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74HC245E-NG is determined by strict equivalence across the following critical parameters: logic type (Transceiver, Non-Inverting), number of elements (1), bits per element (8), output configuration (3-State), output current specifications (5.2mA high and low), supply voltage range (2V ~ 6V), operating temperature range (-55°C ~ 125°C), mounting type (Through Hole), and physical package format (20-DIP / 20-PDIP).

The CD74HC245E manufactured by Harris Corporation meets all electrical and mechanical requirements for direct substitution. Both parts share identical functional specifications, output drive capabilities, voltage tolerance, and thermal operating range. The primary distinction between these parts lies in manufacturer identity, product status classification, and regulatory compliance certifications rather than electrical performance or physical form factor.

Parameter Comparison

Engineering Selection Recommendations

The CD74HC245E-NG (Texas Instruments) is the primary component selection for new designs and applications requiring active product status and current regulatory compliance. This part carries ROHS3 compliance certification, meeting modern environmental and material restriction standards applicable to electronic component manufacturing and distribution.

The CD74HC245E (Harris Corporation) functions as a parametric equivalent for applications where electrical and mechanical compatibility is the sole requirement. However, this part carries obsolete product status classification and does not meet RoHS compliance standards. Selection of the Harris Corporation variant should be limited to legacy system maintenance, repair operations, or applications where regulatory compliance is not a design constraint. The Harris Corporation part is available in higher inventory quantity (1578 units) and may be considered for high-volume legacy production scenarios where compliance exemptions apply.

Frequently Asked Questions (FAQ)

Q: Can the CD74HC245E (Harris Corporation) be used as a direct replacement for the CD74HC245E-NG (Texas Instruments)?

A: Yes, from an electrical and mechanical standpoint. Both parts share identical logic type, element configuration, bit width, output characteristics, supply voltage range, operating temperature range, and physical package format. However, the Harris part carries obsolete status and lacks RoHS3 compliance. Use only in applications where these factors do not impose design or regulatory constraints.

Q: What are the critical parameters that define substitution eligibility for the CD74HC245E-NG?

A: Substitution eligibility is determined by: (1) Logic Type: Transceiver, Non-Inverting; (2) Element Count: 1; (3) Bits per Element: 8; (4) Output Configuration: 3-State; (5) Output Current: 5.2mA (both high and low); (6) Supply Voltage: 2V ~ 6V; (7) Operating Temperature: -55°C ~ 125°C; (8) Mounting: Through Hole; (9) Package: 20-DIP (0.300", 7.62mm) / 20-PDIP.

Q: Are there any physical or pinout differences between these parts?

A: No. Both the CD74HC245E-NG and CD74HC245E utilize identical 20-pin DIP package geometry with 0.300-inch (7.62mm) pitch. Pinout configuration and physical dimensions are equivalent, permitting direct socket substitution without PCB modification.

Q: What is the significance of the product status difference?

A: Active status indicates the part is currently manufactured and supported by the supplier with ongoing availability. Obsolete status indicates the part is no longer in production. For new designs, active-status parts ensure long-term supply chain reliability and manufacturer support. Obsolete parts are suitable only for maintenance and repair of existing systems.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance relates to material composition and manufacturing process standards, not electrical function. Both parts deliver identical electrical performance. RoHS compliance becomes relevant only when design specifications, customer requirements, or regulatory frameworks mandate environmental material restrictions.

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

A: Yes, provided the design does not impose RoHS compliance requirements or require active product status support. The electrical specifications, thermal characteristics, and physical form factor are identical, permitting direct substitution in PCB layouts and circuit implementations.