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Product Detailed Parameters
- Description：IC GATE AND
- Series：*
- Mfr：Nexperia USA Inc.
- Package：Bulk
- Logic Type：-
- Number of Circuits：-
- Number of Inputs：-
- Features：-
- Voltage - Supply：-
- Current - Quiescent (Max)：-
- Current - Output High, Low：-
- Input Logic Level - Low：-
- Input Logic Level - High：-
- Max Propagation Delay @ V, Max CL：-
- Operating Temperature：-
- Mounting Type：-
- Supplier Device Package：-
- Package / Case：-
- Grade：-
- Qualification：-
Download product information
Overview
The Nexperia 74HC21DB,118 is a dual 4-input AND gate manufactured in a 14-lead SOIC (SOT108-1) plastic small outline package. It operates within a supply voltage range of 2.0 V to 6.0 V and supports an ambient temperature range from -40 °C to +125 °C. The device features CMOS input levels with high noise immunity and includes input clamp diodes for interfacing with voltages exceeding VCC. Static characteristics specify maximum input leakage current of ±1 µA at 6.0 V and supply current up to 40 µA under worst-case conditions.
Feature Summary
- Dual independent 4-input AND logic functions integrated into a single package
- CMOS technology providing low power dissipation and high noise immunity
- Input clamp diodes enable direct interface to voltages exceeding the supply rail using current limiting resistors
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B standards
Applications
- Digital logic circuits requiring dual 4-input AND operations
- Systems utilizing mixed voltage interfaces where inputs exceed VCC
- Industrial control applications operating across extended temperature ranges
Procurement Notes
Verify the specific ordering suffix
Selection Notes
Select this component when dual 4-input AND functionality is required in a compact surface-mount format. Ensure the design accommodates the 2.0 V to 6.0 V supply range and utilizes current-limiting resistors if interfacing with signals higher than VCC due to the integrated clamp diodes. Confirm that the SOIC-14 footprint aligns with the PCB layout constraints.
Part Context
This part belongs to the 74HC series of high-speed CMOS logic devices produced by Nexperia. The 74HC21 specifically provides two independent 4-input AND gates. The 'DB' designation indicates the SOIC-14 package variant, while ',118' typically denotes tape and reel packaging configuration for automated assembly processes.
Replacement Considerations
Cross-reference with other manufacturers offering 74HC21 equivalents in SOIC-14 packages. Verify pin compatibility and electrical specifications match the original requirements before substitution.
