74F114PC Equivalent & Substitute Parts

Part Overview

The 74F114PC is a dual JK-type flip-flop logic integrated circuit manufactured by onsemi, housed in a 14-DIP package. This component functions as a 2-element, 1-bit per element flip-flop with complementary outputs, preset and reset capabilities, and negative edge triggering. The 74F114PC is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations where legacy component replacement is required.

Substiute Parts

74F114PC

onsemiIn Stock: 84974F114PC Datasheet

Current PartRFQ

CD74HCT73E

Texas InstrumentsIn Stock: 2232CD74HCT73E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74F114PC with the CD74HCT73E is based on the following critical parameters that must align for functional compatibility:

Functional Parameters (Must Match):

• JK-type flip-flop architecture with 2 elements, 1 bit per element
• Complementary output configuration
• Negative edge triggering
• 14-DIP package form factor (0.300", 7.62mm)
• Through-hole mounting compatibility

Electrical Parameters (Must Be Compatible):

• Supply voltage range: Both parts operate within 4.5V ~ 5.5V
• Logic family compatibility: 74F series (original) to 74HCT series (substitute) maintains TTL/CMOS logic level compatibility

Acceptable Parameter Variations:

• Clock frequency: 74F114PC operates at 95 MHz; CD74HCT73E operates at 60 MHz. The substitute has lower maximum frequency but remains suitable for applications not requiring the full 95 MHz capability.
• Propagation delay: 74F114PC has 7.5 ns; CD74HCT73E has 38 ns. The substitute exhibits longer delay but maintains negative edge triggering behavior.
• Output current: 74F114PC provides 1 mA high / 20 mA low; CD74HCT73E provides 4 mA high / 4 mA low. Load driving capability differs but both support standard TTL/CMOS logic loads.
• Quiescent current: 74F114PC draws 19 mA; CD74HCT73E draws 4 µA. The substitute offers significantly lower power consumption.
• Operating temperature: 74F114PC operates 0°C ~ 70°C; CD74HCT73E operates -55°C ~ 125°C. The substitute supports extended temperature range.

Parameter Comparison

Engineering Selection Recommendations

The CD74HCT73E serves as a direct functional substitute for the 74F114PC based on matching core logic architecture, package form factor, and supply voltage compatibility. The substitute part is currently in active production status, ensuring long-term availability compared to the obsolete 74F114PC.

The CD74HCT73E exhibits lower maximum clock frequency (60 MHz versus 95 MHz) and longer propagation delay (38 ns versus 7.5 ns). Selection of this substitute is appropriate for applications where the original 95 MHz performance specification is not a design requirement. Applications operating at clock frequencies below 60 MHz will experience no functional degradation.

The CD74HCT73E provides superior power efficiency with quiescent current of 4 µA compared to 19 mA in the original part, making it advantageous for battery-powered or low-power applications. The extended operating temperature range (-55°C ~ 125°C) of the substitute accommodates industrial and harsh environment deployments beyond the original part's 0°C ~ 70°C specification.

The substitute part carries ROHS3 compliance certification, supporting modern manufacturing and environmental regulatory requirements. Both parts maintain identical 14-DIP through-hole package dimensions, enabling direct socket replacement without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can the CD74HCT73E directly replace the 74F114PC in existing designs?

A: Yes, for applications where clock frequency does not exceed 60 MHz. The CD74HCT73E provides identical JK flip-flop functionality, complementary outputs, negative edge triggering, and 14-DIP package compatibility. Designs requiring the full 95 MHz performance of the original 74F114PC must evaluate timing-critical signal paths before substitution.

Q: What are the key differences in electrical performance?

A: The CD74HCT73E operates at lower maximum clock frequency (60 MHz versus 95 MHz) and exhibits longer propagation delay (38 ns versus 7.5 ns). Output current capability differs: the original provides 1 mA high / 20 mA low, while the substitute provides 4 mA high / 4 mA low. Quiescent current is significantly lower in the substitute (4 µA versus 19 mA).

Q: Are there any package or mounting differences?

A: No. Both the 74F114PC and CD74HCT73E use identical 14-DIP (0.300", 7.62mm) through-hole packages. Direct socket replacement is possible without PCB modification.

Q: What is the operating temperature range difference?

A: The 74F114PC operates from 0°C to 70°C, while the CD74HCT73E operates from -55°C to 125°C. The substitute supports extended temperature operation for industrial and extreme environment applications.

Q: Does the substitute part meet modern compliance standards?

A: Yes. The CD74HCT73E is ROHS3 compliant and carries active product status from Texas Instruments, ensuring compliance with current environmental and manufacturing regulations. The original 74F114PC is obsolete.

Q: How do the supply voltage requirements compare?

A: Both parts operate within the identical 4.5V ~ 5.5V supply voltage range, ensuring compatibility with standard 5V logic systems without additional power supply modifications.