CD74HC273E Equivalent & Substitute Parts

Part Overview

The CD74HC273E is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, designed for 8-bit parallel data storage and transfer applications. This component features a single element with 8 bits per element, positive edge triggering, and non-inverted outputs. The device operates across a supply voltage range of 2V to 6V and maintains an active product status with full RoHS3 compliance. Substitute parts are identified when equivalent functional performance, package compatibility, and electrical specifications align within acceptable operating parameters.

Substiute Parts

CD74HC273E

Texas InstrumentsIn Stock: 1266CD74HC273E Datasheet

Current PartRFQ

TC74HC273APF

Toshiba Semiconductor and StorageIn Stock: 905TC74HC273APF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HC273E is determined by strict alignment of the following critical parameters:

• Package compatibility: 20-DIP (0.300", 7.62mm) form factor for through-hole mounting
• Functional equivalence: D-Type flip-flop with 1 element, 8 bits per element, positive edge triggering, non-inverted outputs
• Electrical specifications: Supply voltage range 2V ~ 6V, compatible propagation delay and output current ratings
• Series classification: 74HC logic family
• Compliance standards: RoHS3 compliance and REACH unaffected status

The TC74HC273APF from Toshiba Semiconductor and Storage meets all substitution criteria within these defined parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the CD74HC273E and TC74HC273APF maintain active product status and full compliance with RoHS3 and REACH regulations. The TC74HC273APF demonstrates equivalent or superior performance in clock frequency (66 MHz vs. 60 MHz), propagation delay (25 ns vs. 26 ns), and quiescent current consumption (4 µA vs. 8 µA). Both devices share identical package geometry, mounting type, output current specifications, and supply voltage range.

Selection between these parts should be based on availability, lead time, and application-specific temperature operating range requirements. The CD74HC273E supports extended temperature operation from -55°C to 125°C, while the TC74HC273APF operates from -40°C to 85°C. Applications requiring the full extended temperature range must use the CD74HC273E. For standard industrial temperature applications, both parts are functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Can TC74HC273APF be used as a direct replacement for CD74HC273E?

A: Yes, within the operating temperature range of -40°C to 85°C. Both devices share identical package geometry (20-DIP), functional specifications (D-Type flip-flop, 8-bit, positive edge triggered), and electrical parameters (supply voltage 2V ~ 6V, output current 5.2 mA). The TC74HC273APF offers improved performance metrics including faster propagation delay and lower quiescent current.

Q: What are the key differences between these two parts?

A: The primary differences are operating temperature range (CD74HC273E: -55°C to 125°C; TC74HC273APF: -40°C to 85°C), quiescent current (8 µA vs. 4 µA), input capacitance (10 pF vs. 5 pF), and clock frequency (60 MHz vs. 66 MHz). All functional and package specifications are identical.

Q: Are both parts RoHS3 compliant?

A: Yes, both CD74HC273E and TC74HC273APF are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the package compatibility between these parts?

A: Both parts use identical 20-DIP (0.300", 7.62mm) through-hole packaging, ensuring direct PCB footprint compatibility without layout modifications.

Q: Which part should I select for extended temperature applications?

A: The CD74HC273E supports the extended temperature range of -55°C to 125°C. If your application requires operation below -40°C or above 85°C, the CD74HC273E is the required selection.