Overview

The onsemi 74F02PC is a high-speed Quad 2-Input NAND Gate integrated circuit built using advanced Fast (F) TTL technology. It is designed for digital logic applications requiring fast switching speeds and low propagation delay. The device contains four independent NAND gates, each with two inputs, and is suitable for use in a wide variety of digital systems including data processing, control logic, and interface circuits. Its robust design offers improved noise immunity and low power consumption compared to standard TTL devices.

Key Features

* Four independent 2-input NAND gates in a single package
* High-speed operation with typical propagation delay in the nanosecond range
* Low power dissipation compared to older TTL families
* Compatible with standard TTL and CMOS logic levels
* Wide operating voltage range typical of TTL logic (5 V nominal)
* Output drive capability to source or sink multiple TTL inputs
* Enhanced noise immunity and low power consumption

Logic Functionality

Each NAND gate performs the logic operation:
Output = NOT (Input A AND Input B)

When both inputs are high, the output is low; if either input is low, the output is high. This basic logic gate is widely used in digital circuits for implementing various logical functions by combining gates.

Electrical Characteristics

* Operating voltage (V\_CC): 4.75 V to 5.25 V (nominal 5 V)
* Input voltage high (V\_IH): minimum 2.0 V
* Input voltage low (V\_IL): maximum 0.8 V
* Output voltage high (V\_OH): minimum 2.7 V at I\_OH = -4 mA
* Output voltage low (V\_OL): maximum 0.5 V at I\_OL = 8 mA
* Typical propagation delay: approximately 7 ns (from input to output)
* Typical power dissipation per gate: ~10 mW
* Input current (I\_I): typically 40 µA for high input, -0.4 mA for low input

Package and Pin Configuration

* Package type: 14-pin Plastic Dual In-Line Package (PDIP) or Plastic Leaded Chip Carrier (PLCC)
* Pin configuration includes inputs and outputs for four independent gates, power supply pins (V\_CC and GND)
* Standard TTL pinout compatible with existing logic circuits for easy integration

Timing Characteristics

* Propagation delay (t\_PLH, t\_PHL): typically 7 ns, enabling fast switching and high-speed data processing
* Rise and fall times: approximately 3 ns, ensuring clean digital signal transitions
* Input setup and hold times are suitable for synchronous digital systems

Power Consumption

* Quiescent supply current (I\_CC): typically 20 mA for the entire IC, lower than older TTL families due to Fast TTL technology
* Dynamic power dissipation depends on switching frequency but is optimized for reduced heat generation in high-speed applications

Applications

* Digital logic design requiring fast NAND gate operation
* High-speed combinational and sequential logic circuits
* Data processing and timing control circuits
* Digital signal processing and control systems
* Interface logic between different logic families
* Industrial and consumer electronic systems

Absolute Maximum Ratings

* Supply voltage (V\_CC): -0.5 V to +7 V
* Input voltage: -0.5 V to V\_CC + 0.5 V
* Output current: ±25 mA per pin
* Storage temperature: -65°C to +150°C
* Operating temperature: 0°C to +70°C (commercial grade)

Typical Specifications Summary

| Parameter | Value |
| --------------------------- | ------------------------ |
| Supply Voltage (V\_CC) | 4.75 V to 5.25 V |
| Input High Voltage (V\_IH) | ≥ 2.0 V |
| Input Low Voltage (V\_IL) | ≤ 0.8 V |
| Output High Voltage (V\_OH) | ≥ 2.7 V at I\_OH = -4 mA |
| Output Low Voltage (V\_OL) | ≤ 0.5 V at I\_OL = 8 mA |
| Propagation Delay (t\_PD) | ~7 ns |
| Power Dissipation per Gate | ~10 mW |
| Operating Temperature | 0°C to +70°C |
| Package | 14-pin PDIP/PLCC |

Conclusion

The onsemi 74F02PC offers a reliable, high-speed solution for implementing NAND logic functions in digital electronic designs. Its Fast TTL technology ensures fast switching with low power consumption, making it well-suited for timing-critical and power-sensitive applications. The device’s compatibility with standard TTL and CMOS logic levels allows easy integration into existing systems, while its robust electrical characteristics ensure dependable operation across a range of industrial and commercial environments.