CD74HC74E-NG Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The CD74HC74E-NG is a dual D-type positive-edge-triggered flip-flop IC from Texas Instruments, featuring independent asynchronous preset and clear inputs for each of the two flip-flop channels. Operating over a 2V to 6V supply range with high-speed CMOS technology, it delivers reliable edge-triggered data storage for digital logic designs. Available in a 14-pin DIP package from authorized distributors worldwide with competitive pricing and in-stock availability.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC74E-NG Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual independent D-type flip-flops with separate preset, clear, clock, and data pins allow two independent latching functions in a single 14-pin DIP package, maximizing board density
- High-speed CMOS technology with 2V to 6V supply range provides wide compatibility with 3.3V and 5V digital logic systems while maintaining low quiescent current consumption
- Asynchronous active-low preset and clear inputs on each flip-flop enable immediate state override independent of clock, critical for initialization and reset sequences in digital control logic
- Positive-edge-triggered clocking ensures deterministic data capture on the rising edge of the clock, simplifying timing analysis in synchronous digital designs
Applications
The CD74HC74E-NG is a versatile building block for digital logic design, used in frequency dividers, shift registers, data synchronizers, and toggle flip-flop circuits in microcontroller peripheral interfaces and FPGA glue logic. It is commonly employed in educational laboratory kits and prototyping breadboards due to its through-hole DIP package, making it accessible for students and hobbyists learning digital electronics. Industrial control systems, signal generation circuits, and state machine implementations also use this device for reliable edge-triggered data storage and transfer.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many flip-flops does the CD74HC74E-NG contain?
The CD74HC74E-NG contains two independent D-type positive-edge-triggered flip-flops in a single 14-pin DIP package. Each flip-flop has its own data input (D), clock input (CLK), active-low preset (PRE), active-low clear (CLR), and complementary Q and Q-bar outputs, providing complete independence between the two channels with no shared resources.
What supply voltage range does the CD74HC74E-NG support?
The CD74HC74E-NG operates over a supply voltage range of 2V to 6V, making it compatible with both 3.3V and 5V digital logic systems. The HC-series CMOS technology ensures low static power consumption across this range, and the wide voltage tolerance makes it suitable for battery-powered designs and systems with unregulated or varying supply voltages.
What is the purpose of the asynchronous preset and clear inputs?
The active-low asynchronous preset and clear inputs on each flip-flop allow the output state to be forced high (preset) or low (clear) immediately, regardless of the clock signal state. This is essential for system initialization, fault recovery, and hardware reset sequences where the flip-flop state must be set to a known condition before normal clock-driven operation begins.
What package does the CD74HC74E-NG use and is it breadboard compatible?
The CD74HC74E-NG comes in a 14-pin plastic dual-in-line (DIP) package with 0.1-inch (2.54mm) pin pitch, which is fully compatible with standard solderless breadboards and through-hole PCBs. The E suffix in the part number denotes the PDIP package. This makes it a popular choice for prototyping, education, and repairs where surface-mount packages are impractical.
What are typical applications for the CD74HC74E-NG?
Typical applications include divide-by-two frequency dividers, edge-triggered data registers, serial-to-parallel shift register stages, clock domain crossing synchronizers, and debounce circuits for mechanical switches. The dual flip-flop configuration is also commonly used to build simple state machines, toggle outputs from pushbutton inputs, and synchronize asynchronous external signals to a system clock in embedded digital designs.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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