Overview
The 74AHC138PW-Q100J is a high-speed Si-gate CMOS 3-to-8 line decoder/demultiplexer produced by Nexperia USA Inc. This device is designed to accept three binary weighted address inputs (A0, A1, and A2) and, when enabled, provides eight mutually exclusive active-low outputs (Y0 to Y7). It is compliant with the Automotive Electronics Council (AEC) standard Q100 (Grade 1), making it suitable for automotive applications. The device operates within a wide temperature range of -40°C to +125°C and features balanced propagation delays, Schmitt-trigger action on all inputs, and multiple input enable functions for easy expansion.
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 74AHC138PW-Q100J | 2.0 - 5.5 | CMOS | ± 8 | 4.4 | Low | -40 ~ 125 | 125 | 4.6 | 54.7 | TSSOP16 |
Key Features
- High-speed CMOS logic device: Ensures fast operation and low power consumption.
- 3-to-8 line decoder/demultiplexer: Provides eight mutually exclusive active-low outputs based on three binary weighted address inputs.
- Multiple input enable functions: Includes two active LOW (E1 and E2) and one active HIGH (E3) enable inputs, allowing for easy expansion and use as a demultiplexer.
- Schmitt-trigger action on all inputs: Enhances noise immunity.
- Wide operating voltage range: Operates from 2V to 5.5V.
- AEC-Q100 automotive qualified: Suitable for reliable operation in automotive applications.
- ESD protection: Offers HBM and CDM protection exceeding 2000V and 1000V respectively.
- Surface mount package options: Available in 16-TSSOP and other packages, enabling automated assembly and AOI of solder joints.
Applications
- Digital logic circuits: Ideal for various digital logic applications due to its high-speed operation and low power consumption.
- Microprocessor-based systems: Used for memory chip select decoding and other control functions.
- Interface and control applications: Suitable for interface and control applications requiring decoding and demultiplexing functions.
- Automotive electronics: Qualified to AEC-Q100 standards, making it reliable for use in automotive systems.
Q & A
- What is the primary function of the 74AHC138PW-Q100J?
The primary function is to act as a 3-to-8 line decoder/demultiplexer, providing eight mutually exclusive active-low outputs based on three binary weighted address inputs.
- What are the operating voltage and temperature ranges for this device?
The device operates within a voltage range of 2V to 5.5V and a temperature range of -40°C to +125°C.
- What type of logic levels does the 74AHC138PW-Q100J support?
The device operates with CMOS input levels and is compatible with 74AHC and 74HC logic families.
- How many enable inputs does the device have and what are their states?
The device has three enable inputs: two active LOW (E1 and E2) and one active HIGH (E3).
- What is the significance of AEC-Q100 qualification for this device?
The AEC-Q100 qualification ensures the device is reliable and suitable for use in automotive applications.
- What package options are available for the 74AHC138PW-Q100J?
The device is available in 16-TSSOP and other surface mount packages.
- Does the device have ESD protection?
Yes, it offers HBM and CDM protection exceeding 2000V and 1000V respectively.
- What is the output drive capability of the 74AHC138PW-Q100J?
The device can sink or source up to 8mA at VCC = 4.5V.
- Can the 74AHC138PW-Q100J be used as a demultiplexer?
Yes, it can be used as an eight output demultiplexer by using one of the active LOW enable inputs as the data input and the remaining enable inputs as strobes.
- What is the propagation delay of the 74AHC138PW-Q100J?
The propagation delay is approximately 4.4 ns.
