HG74HC00
High-speed CMOS quad 2-input NAND gate with 2V to 6V operation, 10ns propagation delay, and 4mA output drive
Product Overview
Description
HG74HC00 is a quad 2-input NAND gate designed for general purpose digital logic applications.
With high-speed CMOS technology, 2V to 6V supply range, and 10ns typical propagation delay, this device provides reliable logic operation in various systems.
The device is pin-compatible with industry standard 74HC00 and provides drop-in replacement capability.
Product Series
HG
Primary Application
General purpose logic circuits
Key Features
- Pin-compatible with 74HC00
- Wide 2V to 6V supply voltage range
- Low power consumption
- High noise immunity
- Balanced propagation delays
- Symmetrical output drive
- ESD protection exceeds 2000V
- Multiple package options
Specifications
| Logic Function | Quad 2-input NAND |
|---|---|
| Supply Voltage Range | 2.0V to 6.0V |
| Input High Voltage | 0.7×VCC min |
| Input Low Voltage | 0.3×VCC max |
| Output Drive Current | ±4mA at 5V |
| Propagation Delay | 10ns typical at 5V |
| Power Dissipation | Quiescent: 2μA max |
| Operating Temperature | -40°C to +85°C |
| Package | SOP-14, DIP-14, TSSOP-14 |
Applications
General purpose logic circuits
Electronic system design
Digital signal processing
Sensor signal conditioning
Control logic
Industrial automation and control
Clock generation
Electronic system design
Gating and enabling circuits
Electronic system design
Level shifting
Electronic system design
Consumer electronics
Consumer electronics
FAE Expert Insights
"HG74HC00 is a reliable workhorse for digital logic designs. It provides drop-in replacement for standard 74HC00 at a competitive price point. The wide voltage range makes it versatile for both 3.3V and 5V systems. I've used these gates in numerous control logic designs with excellent results. The propagation delay is well-controlled and consistent across temperature. For best performance, use proper bypassing (0.1μF ceramic) near each IC. The multiple package options provide flexibility for different board density requirements. This is a great choice for cost-sensitive designs requiring standard logic functions."
Cost-effective drop-in replacement for 74HC00
— Lisa Wang, BeiLuo
Frequently Asked Questions
Is HG74HC00 pin-compatible with 74HC00 from other manufacturers?
Yes, HG74HC00 is fully pin-compatible with industry standard 74HC00 from all major manufacturers including TI, Nexperia, ON Semiconductor, etc. The pinout follows the JEDEC standard: Pins 1,2 are inputs, pin 3 is output for gate 1; Pins 4,5 are inputs, pin 6 is output for gate 2; Pin 7 is GND; Pins 8,9 are inputs, pin 10 is output for gate 3; Pins 11,12 are inputs, pin 13 is output for gate 4; and Pin 14 is VCC. This standardization allows direct replacement without PCB changes.
HG74HC00 provides direct drop-in replacement. Contact our FAE team for cross-reference to specific manufacturer part numbers.
What is the difference between NAND and AND gates?
A NAND gate outputs LOW only when ALL inputs are HIGH; otherwise output is HIGH. An AND gate outputs HIGH only when ALL inputs are HIGH; otherwise output is LOW. NAND is the inverse of AND. NAND gates are considered universal because any logic function can be implemented using only NAND gates. In CMOS technology, NAND gates are typically faster and use less area than AND gates (which are NAND + inverter). For this reason, NAND is often preferred in designs, with inversion handled elsewhere if needed.
Use NAND for general logic as it's more efficient. Use AND when positive logic is specifically needed. Our FAE team can help optimize logic designs.
How do I create other logic functions using HG74HC00 NAND gates?
NAND gates are universal - any logic function can be implemented using only NANDs. NOT gate: Connect both inputs together. AND gate: NAND followed by NOT (two NANDs). OR gate: NAND with inverted inputs (three NANDs). NOR gate: OR followed by NOT (four NANDs). XOR gate: Combination of five NANDs. XNOR gate: XOR followed by NOT (six NANDs). While NAND-only designs use more gates than mixed logic, they simplify inventory by using only one part type. For complex designs, consider using the appropriate logic function directly (AND, OR, etc.) for reduced gate count.
Use NAND universal property for simple functions. For complex designs, use dedicated gates. Contact our FAE team for logic optimization.
What is the fan-out capability of HG74HC00?
Fan-out is the number of inputs a gate output can drive. HG74HC00 can drive up to 10 HC inputs or 10 LS inputs while maintaining proper logic levels. This is calculated from output drive capability (4mA) divided by input current (1μA for HC, 0.4mA for LS). For CMOS loads, fan-out is essentially unlimited for DC (only capacitive loading matters). For AC operation, each input adds capacitance (5pF typical), which slows the signal. Practical fan-out for high-speed operation is 10-20 CMOS inputs. For driving more loads, use a buffer like HG74HC244 or distribute the signal through multiple gates.
Fan-out of 10 for guaranteed levels. Higher for CMOS with reduced speed. Contact our FAE team for high-fanout designs.
How do I prevent ground bounce when using HG74HC00?
Ground bounce occurs when multiple outputs switch simultaneously, causing voltage spikes on the ground line due to package inductance. To minimize: Use proper decoupling - place 0.1μF ceramic capacitor close to each IC between VCC and GND; Minimize ground inductance - use wide ground traces or ground planes; Stagger switching - avoid simultaneous switching of many gates; and Use series resistors - 22-47Ω on outputs slows rise/fall times reducing di/dt. Ground bounce can cause false triggering in sensitive circuits. For high-speed designs with many gates switching, consider using multiple smaller packages rather than one large package.
Use proper decoupling and ground planes. Contact our FAE team for high-speed digital design guidelines.