Overview
The 74HCT238D-Q100J, produced by Nexperia USA Inc., is a high-speed Si-gate CMOS 3-to-8 line decoder/demultiplexer. 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 74HCT238D-Q100J is designed to be pin compatible with low power Schottky TTL (LSTTL) and is suitable for a wide range of applications requiring decoding and demultiplexing functions.
Key Specifications
| Parameter | Description |
|---|---|
| Type Number | 74HCT238D-Q100J |
| Logic Switching Levels | TTL |
| Supply Voltage (VCC) | 4.5 V to 5.5 V |
| Output Drive Capability | ± 4 mA |
| Propagation Delay (tpd) | 18 ns |
| Power Dissipation | Low power dissipation |
| Operating Temperature | -40 °C to +125 °C |
| Package | 16-SOIC (SOT109-1) |
| ESD Protection | HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V |
Key Features
- Decodes three binary weighted address inputs to eight mutually exclusive outputs.
- Three enable inputs (E1, E2, and E3) for flexible control.
- Wide supply voltage range from 2.0 V to 6.0 V.
- CMOS low power dissipation.
- High noise immunity.
- Demultiplexing capability.
- Multiple input enable for easy expansion.
- Ideal for memory chip select decoding.
- Active HIGH mutually exclusive outputs.
- Complies with JEDEC standards (JESD8C and JESD7A).
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B.
Applications
- Memory chip select decoding.
- Demultiplexing applications.
- Parallel expansion to larger decoder systems.
- General digital logic circuits requiring decoding and demultiplexing functions.
- Automotive and industrial control systems due to its robust ESD protection and wide operating temperature range.
Q & A
- What is the primary function of the 74HCT238D-Q100J?
The primary function is to decode three binary weighted address inputs to eight mutually exclusive outputs and to act as a demultiplexer.
- What are the logic switching levels for the 74HCT238D-Q100J?
The logic switching levels are TTL (Transistor-Transistor Logic).
- What is the supply voltage range for the 74HCT238D-Q100J?
The supply voltage range is from 4.5 V to 5.5 V.
- How many enable inputs does the 74HCT238D-Q100J have?
The device has three enable inputs (E1, E2, and E3).
- What is the propagation delay of the 74HCT238D-Q100J?
The propagation delay is 18 ns.
- What is the operating temperature range for the 74HCT238D-Q100J?
The operating temperature range is from -40 °C to +125 °C.
- What type of package is the 74HCT238D-Q100J available in?
The device is available in a 16-SOIC (SOT109-1) package.
- Does the 74HCT238D-Q100J have ESD protection?
- Is the 74HCT238D-Q100J compliant with any specific standards?
- What are some common applications for the 74HCT238D-Q100J?
