Overview
The 74HC42D,653 from Nexperia USA Inc. is a BCD to decimal decoder, specifically designed as a one-of-ten decoder. This integrated circuit accepts four BCD inputs (0A to 3A) and provides ten mutually exclusive outputs (0Y to 9Y). The device is particularly useful in applications requiring the conversion of binary-coded decimal (BCD) to decimal formats. It complies with JEDEC standard no. 7A and is known for its wide supply voltage range, low power dissipation, and high noise immunity.
Key Specifications
| Type Number | VCC (V) | Logic Switching Levels | Output Drive Capability (mA) | tpd (ns) | Power Dissipation Considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package Name |
|---|---|---|---|---|---|---|---|---|---|---|
| 74HC42D | 2.0 - 6.0 | CMOS | ± 5.2 | 17 | Low | -40 to +125 | 73 | 1.1 | 31 | SO16 (SOT109-1) |
Key Features
- BCD to Decimal Decoder: Converts four BCD inputs to ten mutually exclusive decimal outputs.
- Wide Supply Voltage Range: Operates from 2.0 V to 6.0 V.
- Low Power Dissipation: CMOS technology ensures low power consumption.
- High Noise Immunity: Provides robust performance against noise.
- 1-of-8 Demultiplexing Capability: The most significant input (3A) can be used to inhibit the device, enabling 1-of-8 demultiplexing.
- ESD Protection: Human Body Model (HBM) exceeds 2000 V and Charged Device Model (CDM) exceeds 1000 V).
- Latch-up Performance: Exceeds 100 mA per JESD 78 Class II Level B).
Applications
The 74HC42D,653 is versatile and can be used in various applications across different industries, including:
- Automotive Systems: For decoding and demultiplexing in automotive control systems).
- Industrial Automation: In industrial control systems requiring BCD to decimal conversion).
- Consumer Electronics: For display and control systems in consumer devices).
- Computing and Power Systems: In power management and control circuits).
Q & A
- What is the primary function of the 74HC42D,653?
The primary function is to act as a BCD to decimal decoder, converting four BCD inputs to ten mutually exclusive decimal outputs).
- What is the supply voltage range for the 74HC42D,653?
The supply voltage range is from 2.0 V to 6.0 V).
- What type of logic switching levels does the 74HC42D,653 use?
The device uses CMOS logic switching levels).
- What is the output drive capability of the 74HC42D,653?
The output drive capability is ± 5.2 mA).
- What is the propagation delay (tpd) of the 74HC42D,653?
The propagation delay is 17 ns).
- Does the 74HC42D,653 have ESD protection?
Yes, it has ESD protection exceeding 2000 V for HBM and 1000 V for CDM).
- What is the operating temperature range for the 74HC42D,653?
The operating temperature range is from -40 °C to +125 °C).
- Can the 74HC42D,653 be used as a 1-of-8 decoder?
Yes, it can be used as a 1-of-8 decoder by utilizing the most significant input (3A) as an inhibit function).
- What package type is the 74HC42D,653 available in?
The device is available in the SO16 (SOT109-1) package).
- What industries can the 74HC42D,653 be applied to?
The device can be applied to various industries including automotive, industrial, consumer electronics, and computing).
