Overview
The 74LVC373AD-Q100J is an octal D-type transparent latch produced by Nexperia USA Inc. This integrated circuit is designed to operate in a wide range of applications, particularly in environments where both 3.3 V and 5 V logic levels are present. The device features latch enable (LE) and output enable (OE) inputs, allowing for flexible control over data storage and output states. It is part of the 74LVC family, known for its low power consumption and compatibility with CMOS and TTL logic levels.
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 74LVC373AD | 1.2 - 3.6 | TTL | ± 24 | 3.0 | low | -40 ~ 125 | 85 | 27.1 | 61 | SO20 |
Key Features
- Octal D-type transparent latch: Allows data to be latched and stored based on the state of the latch enable (LE) input.
- 3-state outputs: Outputs can be set to high-impedance state using the output enable (OE) input.
- 5 V tolerant inputs/outputs: Compatible with both 3.3 V and 5 V logic levels, making it suitable for mixed voltage environments.
- Schmitt-trigger action at all inputs: Enhances noise immunity by tolerating slower input rise and fall times.
- Low power consumption: CMOS technology ensures low power dissipation.
- IOFF circuitry: Prevents backflow current when the device is powered down, supporting partial power-down applications.
- ESD protection: Compliant with ANSI/ESDA/JEDEC standards, providing protection against electrostatic discharge (HBM: >2000 V, CDM: >1000 V).
- Wide operating temperature range: Specified from -40 °C to +125 °C.
Applications
- Mixed voltage systems: Ideal for translating signals between 3.3 V and 5 V domains.
- Automotive systems: Qualified to AEC-Q100 standards, making it suitable for automotive applications.
- Industrial control systems: Used in various industrial control environments due to its robust specifications and wide operating temperature range.
- Consumer electronics: Suitable for use in consumer electronics where low power consumption and high reliability are critical.
Q & A
- What is the primary function of the 74LVC373AD-Q100J?
The primary function is to act as an octal D-type transparent latch with 3-state outputs, allowing for data storage and output control.
- What are the voltage tolerance levels of the inputs and outputs?
The inputs and outputs are 5 V tolerant, making them compatible with both 3.3 V and 5 V logic levels.
- How does the latch enable (LE) input affect the device?
When LE is HIGH, the latches are transparent, and when LE is LOW, the latches store the information present at the inputs a set-up time preceding the HIGH-to-LOW transition of LE.
- What is the purpose of the output enable (OE) input?
A HIGH on OE causes the outputs to assume a high-impedance OFF-state without affecting the state of the latches.
- What is the significance of Schmitt-trigger action at all inputs?
Schmitt-trigger action enhances noise immunity by tolerating slower input rise and fall times.
- What is the IOFF circuitry used for?
The IOFF circuitry disables the output, preventing potentially damaging backflow current through the device when it is powered down.
- What are the ESD protection levels for this device?
The device complies with ANSI/ESDA/JEDEC standards, providing protection against electrostatic discharge (HBM: >2000 V, CDM: >1000 V).
- What is the operating temperature range for the 74LVC373AD-Q100J?
The device is specified to operate from -40 °C to +125 °C.
- Is the 74LVC373AD-Q100J suitable for automotive applications?
Yes, it is qualified to AEC-Q100 standards, making it suitable for automotive applications.
- What package type is the 74LVC373AD-Q100J available in?
The device is available in a 20-SOIC (SOT163-1) package.
