Overview
The 74HC21D,652 is a dual 4-input AND gate integrated circuit produced by Nexperia USA Inc. This component is part of the 74HC series, known for its CMOS low power dissipation and high noise immunity. Although the specific part number 74HC21D,652 is currently obsolete and no longer manufactured, it remains relevant for understanding and replacing with compatible alternatives.
Key Specifications
| Parameter | Value |
|---|---|
| Type Number | 74HC21D |
| Package | SO14 (SOT108-1) |
| VCC (V) | 2.0 - 6.0 |
| Logic Switching Levels | CMOS |
| Output Drive Capability (mA) | ± 5.2 |
| tpd (ns) | 10 |
| fmax (MHz) | 36 |
| Number of Bits | 2 |
| Power Dissipation Considerations | Low power dissipation |
| Tamb (°C) | -40 to 125 |
| Rth(j-a) (K/W) | 83 |
| Ψth(j-top) (K/W) | 3.4 |
| Rth(j-c) (K/W) | 40 |
Key Features
- Dual 4-input AND gate with clamp diodes on inputs, allowing the use of current limiting resistors to interface inputs to voltages in excess of VCC.
- Wide supply voltage range from 2.0 to 6.0 V.
- CMOS low power dissipation.
- High noise immunity.
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B.
- Complies with JEDEC standards: JESD8C (2.7 V to 3.6 V) and JESD7A (2.0 V to 6.0 V).
- HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V.
Applications
The 74HC21D is suitable for a wide range of applications across various industries, including:
- Automotive systems.
- Industrial control systems.
- Power management systems.
- Computing and consumer electronics.
- Mobile and wearable devices.
Q & A
- What is the 74HC21D,652?
The 74HC21D,652 is a dual 4-input AND gate integrated circuit from Nexperia USA Inc.
- Why is the 74HC21D,652 obsolete?
The 74HC21D,652 is no longer manufactured and has been discontinued by Nexperia USA Inc..
- What is the supply voltage range for the 74HC21D?
The supply voltage range for the 74HC21D is from 2.0 to 6.0 V.
- What are the logic switching levels of the 74HC21D?
The logic switching levels of the 74HC21D are CMOS.
- What is the output drive capability of the 74HC21D?
The output drive capability of the 74HC21D is ± 5.2 mA.
- What is the maximum operating frequency of the 74HC21D?
The maximum operating frequency of the 74HC21D is 36 MHz.
- What is the temperature range for the 74HC21D?
The operating temperature range for the 74HC21D is -40 to 125°C.
- Does the 74HC21D comply with any specific standards?
Yes, it complies with JEDEC standards: JESD8C and JESD7A.
- What is the ESD protection level of the 74HC21D?
The 74HC21D exceeds 2000 V in HBM (ANSI/ESDA/JEDEC JS-001 class 2).
- Where can I find substitutes for the 74HC21D,652?
You can find substitutes or alternative package types on distributors' websites such as Digi-Key.
