Overview
The 74LVC373ADB is an octal D-type transparent latch produced by Nexperia USA Inc. This device is designed to provide high-performance logic functions with advanced features. It features latch enable (LE) and output enable (OE) inputs, allowing for precise control over data storage and output states. When the latch enable (LE) is HIGH, the latches are transparent, meaning the output will change each time its corresponding D-input changes. 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. A HIGH on the output enable (OE) causes the outputs to assume a high-impedance OFF-state, without affecting the state of the latches.
The device is capable of operating in mixed 3.3 V and 5 V environments, thanks to its 5 V tolerant inputs and outputs. It also includes Schmitt-trigger action at all inputs, making it tolerant of slower input rise and fall times.
Key Specifications
| Parameter | Value |
|---|---|
| Type Number | 74LVC373ADB |
| Package Name | SSOP20 (SOT339-1) |
| Logic Type | D-Type Transparent Latch |
| Supply Voltage Range | 1.2 V to 3.6 V |
| Operating Temperature | -40°C to +125°C |
| Output Type | Tri-State |
| Propagation Delay Time | 1.5 ns |
| Output High/Low Current | 24 mA / 24 mA |
| 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
- Overvoltage tolerant inputs to 5.5 V
- Wide supply voltage range from 1.2 V to 3.6 V
- CMOS low power consumption
- Direct interface with TTL levels
- High-impedance outputs when VCC = 0 V
- IOFF circuitry provides partial Power-down mode operation
- Complies with JEDEC standards: JESD8-7A, JESD8-5A, JESD8-C/JESD36
- Schmitt-trigger action at all inputs for tolerance of slower input rise and fall times
Applications
The 74LVC373ADB is suitable for a variety of applications, including:
- Mixed 3.3 V and 5 V environments, acting as translators between different voltage levels.
- Partial power-down applications, utilizing the IOFF circuitry to prevent backflow current.
- Automotive and industrial electronics, where robust and reliable logic functions are required.
- Embedded systems and microcontroller interfaces, where low power consumption and high-impedance outputs are beneficial.
Q & A
- What is the primary function of the 74LVC373ADB?
The primary function of the 74LVC373ADB is to act as an octal D-type transparent latch with 3-state outputs.
- What is the supply voltage range for the 74LVC373ADB?
The supply voltage range is from 1.2 V to 3.6 V.
- What is the operating temperature range for this device?
The operating temperature range is from -40°C to +125°C.
- Does the 74LVC373ADB support mixed voltage environments?
Yes, it supports mixed 3.3 V and 5 V environments with 5 V tolerant inputs and outputs.
- What is the purpose of the IOFF circuitry?
The IOFF circuitry provides partial Power-down mode operation, preventing backflow current when the device is powered down.
- What type of ESD protection does the 74LVC373ADB have?
The device has HBM (Human Body Model) ESD protection exceeding 2000 V and CDM (Charged Device Model) ESD protection exceeding 1000 V.
- What is the propagation delay time for the 74LVC373ADB?
The propagation delay time is 1.5 ns.
- What is the output current capability of the 74LVC373ADB?
The output high and low current is 24 mA each.
- Does the 74LVC373ADB comply with any specific standards?
Yes, it complies with JEDEC standards: JESD8-7A, JESD8-5A, and JESD8-C/JESD36.
- What package types are available for the 74LVC373ADB?
The device is available in SSOP20 (SOT339-1) package.
- What is the significance of Schmitt-trigger action in the 74LVC373ADB?
Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall times.
