The NXP 74HC21 is a high-speed Si-gate CMOS device and is pin compatible with low-power Schottky TTL (LSTTL). It is fabricated with silicon gate CMOS technology which ensures that it has the high noise immunity and low power consumption typical of CMOS integrated circuits, along with the speed of LSTTL devices.

Key Features

• Logic Type: Dual 4-input AND gate, providing a versatile logic function that can be used in a wide range of digital applications.
• Supply Voltage Range: 2 V to 6 V, making it suitable for battery-operated devices and for interfacing with both standard and low-voltage digital circuits.
• High Noise Immunity: NXP's advanced CMOS technology provides increased immunity to electrical noise, a critical feature for reliable operation in industrial environments.
• Low Power Consumption: Characteristic of CMOS devices, the 74HC21 has a very low power consumption, especially in the static condition, which helps in power-sensitive designs.
• High Speed: The device has a balanced propagation delay and transition times, which allows for high-speed operation that is comparable to equivalent LSTTL devices.
• Output Drive Capability: Capable of driving 15 LSTTL loads, ensuring compatibility with a wide range of digital components.
• ESD Protection: HBM JESD22-A114E exceeds 2000 V and MM JESD22-A115-A exceeds 200 V, providing robust protection against electrostatic discharge.

Applications

The 74HC21 is used in various applications where a multiple-input AND function is required. This includes, but is not limited to, logic gate circuits, control systems, signal processing, and various types of digital logic designs. Its high-speed performance and compatibility with other logic families make it a preferred choice for designers looking to create complex digital systems.

Product Specifications

Attribute Description Manufacturer NXP Semiconductors Part Number 74HC21 Logic Family HC Number of Gates 2 Number of Inputs per Gate 4 Operating Temperature -40°C to +125°C Mounting Type Through Hole or Surface Mount