74HC245N,652 Equivalent & Substitute Parts

Part Overview

The 74HC245N,652 is a non-inverting transceiver logic integrated circuit manufactured by NXP USA Inc. in a 20-DIP through-hole package. This component 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 part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts maintain functional equivalence while offering improved availability and product status options.

Substiute Parts

74HC245N,652

NXP USA Inc.In Stock: 78974HC245N,652 Datasheet

Current PartRFQ

74HC245D,653

Nexperia USA Inc.In Stock: 228174HC245D,653 Datasheet

MFR RecommendedRFQ

CD74HC245E

Harris CorporationIn Stock: 1656CD74HC245E Datasheet

MFR RecommendedRFQ

SN74HC245N

Texas InstrumentsIn Stock: 13796SN74HC245N Datasheet

MFR RecommendedRFQ

SN74HC645N

Texas InstrumentsIn Stock: 3893SN74HC645N Datasheet

MFR RecommendedRFQ

TC74HC245APF

Toshiba Semiconductor and StorageIn Stock: 3027TC74HC245APF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC245N,652 is determined by strict equivalence across the following parameters: logic type (non-inverting transceiver), element count (1), bit width (8 bits per element), output configuration (3-state), supply voltage range (2V ~ 6V), and base product number (74HC245 series). All substitute parts listed maintain these core electrical specifications. Package type and mounting method are secondary considerations; through-hole DIP packages are preferred for direct pin compatibility, while surface-mount alternatives (such as 20-SOIC) require PCB redesign but maintain electrical equivalence. Compliance certifications (RoHS3, REACH) and product status (active vs. obsolete) are selection factors based on application requirements and supply chain considerations.

Parameter Comparison

Engineering Selection Recommendations

For direct pin-compatible replacement in existing through-hole designs, select from SN74HC245N (Texas Instruments), TC74HC245APF (Toshiba Semiconductor), or CD74HC245E (Harris Corporation). SN74HC245N and TC74HC245APF are preferred due to active product status and ROHS3 compliance. The CD74HC245E remains available but carries obsolete status and RoHS non-compliance, limiting suitability for new designs subject to environmental regulations.

The 74HC245D,653 (Nexperia) provides an active, ROHS3-compliant alternative in surface-mount 20-SOIC packaging. This option requires PCB redesign but offers superior availability and modern manufacturing standards.

The SN74HC645N (Texas Instruments) maintains full electrical and mechanical compatibility with identical output current specifications and DIP packaging, with active product status and ROHS3 compliance.

For applications requiring extended operating temperature range (-55°C to 125°C), the CD74HC245E provides the widest specification, though at the cost of RoHS non-compliance and obsolete status.

Frequently Asked Questions (FAQ)

Q: Can the 74HC245D,653 (SOIC package) be used as a direct replacement for the 74HC245N,652 (DIP package)?

A: The 74HC245D,653 is electrically equivalent but requires PCB redesign due to different package geometry. Through-hole DIP packages cannot be directly substituted with surface-mount SOIC packages without board layout modifications.

Q: What is the difference between the SN74HC245N and SN74HC645N?

A: Both parts are manufactured by Texas Instruments with identical electrical specifications (7.8mA output current, 2V ~ 6V supply, -40°C ~ 85°C operating range) and 20-DIP packaging. The primary difference is the base product number designation (74HC245 vs. 74HC645), which reflects internal architectural variations not affecting functional equivalence for standard transceiver applications.

Q: Why does the CD74HC245E have lower output current (5.2mA vs. 7.8mA)?

A: The CD74HC245E is a Harris Corporation variant with different internal design specifications. While output current differs, it remains within acceptable ranges for standard logic-level applications. Verify load requirements before selection if current drive capability is critical.

Q: Are all substitute parts ROHS3 compliant?

A: No. The CD74HC245E is RoHS non-compliant. All other substitutes (74HC245D,653, SN74HC245N, SN74HC645N, TC74HC245APF) are ROHS3 compliant. For applications subject to environmental regulations, select from the compliant options.

Q: Which substitute has the widest operating temperature range?

A: The CD74HC245E operates from -55°C to 125°C, providing the widest specification. All other substitutes operate from -40°C to 85°C or -40°C to 125°C. Verify application temperature requirements before selection.

Q: Is the 74HC245N,652 still available for purchase?

A: The 74HC245N,652 is classified as obsolete. Active substitutes with superior availability include SN74HC245N (13,752 units in stock), 74HC245D,653 (2,200 units), and TC74HC245APF (2,953 units).