Overview
The 74LVC373ADB-Q100J is an octal D-type transparent latch produced by Nexperia USA Inc. This device is designed with 3-state outputs and features latch enable (LE) and output enable (OE) inputs. When the LE input is HIGH, the latches are transparent, allowing the output to change with each change in the corresponding D-input. 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 OE input causes the outputs to assume a high-impedance OFF-state, without affecting the state of the latches.
This component is particularly useful in mixed 3.3 V and 5 V environments due 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 | Description |
|---|---|
| Type Number | 74LVC373ADB-Q100J |
| Package | SSOP-20 (SOT339-1) |
| Supply Voltage Range | 1.2 V to 3.6 V |
| Input Voltage Tolerance | Up to 5.5 V |
| Operating Temperature Range | -40 °C to +85 °C and -40 °C to +125 °C |
| ESD Protection | HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V |
| Compliance | JESD8-7A (1.65 V to 1.95 V), JESD8-5A (2.3 V to 2.7 V), JESD8-C/JESD36 (2.7 V to 3.6 V) |
Key Features
- Octal D-type transparent latch with 3-state outputs
- Latch enable (LE) and output enable (OE) inputs
- 5 V tolerant inputs and outputs for mixed voltage environments
- Schmitt-trigger action at all inputs for improved noise immunity
- CMOS low power consumption
- Direct interface with TTL levels
- High-impedance outputs when VCC = 0 V
- IOFF circuitry for partial power-down mode operation
Applications
The 74LVC373ADB-Q100J is suitable for a variety of applications, including:
- Mixed 3.3 V and 5 V system designs where voltage translation is necessary
- Partial power-down applications where IOFF circuitry is beneficial
- Systems requiring low power consumption and high noise immunity
- General-purpose logic and data storage in digital circuits
Q & A
- What is the primary function of the 74LVC373ADB-Q100J?
The primary function is to act as an octal D-type transparent latch with 3-state outputs.
- What is the significance of the latch enable (LE) and output enable (OE) inputs?
The LE input controls when data enters the latches, and the OE input controls the output state, setting it to high-impedance when HIGH.
- What is the voltage tolerance of the inputs?
The inputs are tolerant up to 5.5 V.
- What is the operating temperature range of the device?
The device operates from -40 °C to +85 °C and -40 °C to +125 °C.
- What type of ESD protection does the device offer?
The device offers HBM and CDM ESD protection exceeding 2000 V and 1000 V respectively.
- Is the device compliant with any specific standards?
Yes, it complies with JESD8-7A, JESD8-5A, and JESD8-C/JESD36 standards.
- What is the purpose of the IOFF circuitry?
The IOFF circuitry allows for partial power-down mode operation, preventing backflow current when the device is powered down.
- Can the device be used in mixed voltage environments?
Yes, it is suitable for mixed 3.3 V and 5 V environments due to its 5 V tolerant inputs and outputs.
- What type of package does the 74LVC373ADB-Q100J come in?
The device comes in an SSOP-20 (SOT339-1) package.
- What is the significance of Schmitt-trigger action at the inputs?
Schmitt-trigger action improves noise immunity by making the circuit tolerant of slower input rise and fall times.
