Overview
The 74HC238PW,112 is a 3-to-8 line decoder/demultiplexer integrated circuit produced by Nexperia USA Inc. This device decodes three binary weighted address inputs (A0, A1, and A2) to eight mutually exclusive outputs (Y0 to Y7). It features three enable inputs (E1, E2, and E3), allowing for flexible control over the output states. The 74HC238PW is part of the 74HC series, known for its CMOS low power dissipation and high noise immunity, making it suitable for a wide range of applications.
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 74HC238PW | 2.0 - 6.0 | CMOS | ± 5.2 | 14 | Low | -40 to +125 | 126 | 4.8 | 55.6 | TSSOP16 (SOT403-1) |
Key Features
- Wide supply voltage range: From 2.0 to 6.0 V.
- CMOS low power dissipation: Reduces power consumption.
- High noise immunity: Ensures reliable operation in noisy environments.
- Demultiplexing capability: Can be used as an eight output demultiplexer.
- Multiple input enable for easy expansion: Allows parallel expansion to a 1-of-32 decoder with minimal components.
- Ideal for memory chip select decoding: Suitable for memory addressing applications.
- Active HIGH mutually exclusive outputs: Ensures only one output is active at a time.
- ESD protection: HBM exceeds 2000 V, CDM exceeds 1000 V.
- Compliance with JEDEC standards: JESD8C (2.7 V to 3.6 V) and JESD7A (2.0 V to 6.0 V).
Applications
The 74HC238PW is versatile and can be used in various applications, including:
- Memory chip select decoding: Ideal for selecting memory chips in digital systems.
- Demultiplexing: Can be used to demultiplex a single data line into multiple output lines.
- Industrial and automotive systems: Due to its robustness and wide operating temperature range (-40 °C to +125 °C).
- Consumer electronics: Suitable for use in mobile, computing, and other consumer electronic devices.
Q & A
- What is the primary function of the 74HC238PW?
The primary function of the 74HC238PW is to decode three binary weighted address inputs to eight mutually exclusive outputs, and it can also be used as a demultiplexer.
- What is the supply voltage range for the 74HC238PW?
The supply voltage range for the 74HC238PW is from 2.0 to 6.0 V.
- What are the logic switching levels for the 74HC238PW?
The logic switching levels for the 74HC238PW are CMOS levels.
- How many enable inputs does the 74HC238PW have?
The 74HC238PW has three enable inputs (E1, E2, and E3).
- What is the output drive capability of the 74HC238PW?
The output drive capability of the 74HC238PW is ± 5.2 mA.
- What is the propagation delay (tpd) for the 74HC238PW?
The propagation delay (tpd) for the 74HC238PW is 14 ns.
- What are the operating temperature ranges for the 74HC238PW?
The operating temperature ranges for the 74HC238PW are from -40 °C to +85 °C and from -40 °C to +125 °C.
- Does the 74HC238PW have ESD protection?
Yes, the 74HC238PW has ESD protection: HBM exceeds 2000 V, CDM exceeds 1000 V.
- What package options are available for the 74HC238PW?
The 74HC238PW is available in a TSSOP16 (SOT403-1) package.
- Is the 74HC238PW compliant with JEDEC standards?
Yes, the 74HC238PW complies with JEDEC standards JESD8C (2.7 V to 3.6 V) and JESD7A (2.0 V to 6.0 V).
