Overview
The 74HC573DB,118, produced by Nexperia USA Inc., is an 8-bit D-type transparent latch with 3-state outputs. This device is part of the 74HC and 74HCT series, known for their versatility in digital logic applications. The latch features latch enable (LE) and output enable (OE) inputs, allowing for precise control over data storage and output states. When the LE input is HIGH, the latches are transparent, and the output follows the input. When LE is LOW, the latches store the information present at the inputs. A HIGH on the OE input causes the outputs to assume a high-impedance OFF-state, without affecting the latch state. This component is suitable for a wide range of applications, including microprocessor input/output ports and bus-oriented systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2.0 V | 6.0 V | ||
| Input Levels | CMOS (74HC573), TTL (74HCT573) | |||
| Propagation Delay (Dn to Qn) | VCC = 2.0 V | 47 ns | 150 ns | 225 ns |
| Propagation Delay (Dn to Qn) | VCC = 4.5 V | 17 ns | 30 ns | 45 ns |
| Propagation Delay (LE to Qn) | VCC = 2.0 V | 50 ns | 150 ns | 225 ns |
| Propagation Delay (OE to Qn) | VCC = 2.0 V | 50 ns | 150 ns | 225 ns |
| Input Capacitance (CI) | 3.5 pF | |||
| Supply Current (ICC) | VCC = 5.5 V | 8.0 μA | 160 μA | |
| Operating Temperature | -40 °C | +125 °C | ||
| Package Type | SSOP20 (SOT339-1) |
Key Features
- Wide supply voltage range from 2.0 V to 6.0 V
- CMOS low power dissipation
- High noise immunity
- Inputs and outputs on opposite sides of the package for easy interface with microprocessors
- Useful as input or output port for microprocessors and microcomputers
- 3-state non-inverting outputs for bus-oriented applications
- Common 3-state output enable input
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
- Complies with JEDEC standards: JESD8C (2.7 V to 3.6 V) and JESD7A (2.0 V to 6.0 V)
- ESD protection: HBM exceeds 2000 V, CDM exceeds 1000 V
- Multiple package options
- Specified from -40 °C to +85 °C and from -40 °C to +125 °C
Applications
- Industrial production
- Smart home appliances
- Electric vehicles
- Medical devices
- Internet of Things (IoT)
- Automotive applications (qualified to AEC-Q100 Grade 1 for the 74HC573D-Q100 variant)
Q & A
- What is the primary function of the 74HC573DB,118?
The primary function is to act as an 8-bit D-type transparent latch with 3-state outputs, suitable for use in digital logic circuits.
- What are the input levels for the 74HC573 and 74HCT573?
The 74HC573 operates at CMOS levels, while the 74HCT573 operates at TTL levels.
- What is the supply voltage range for this component?
The supply voltage range is from 2.0 V to 6.0 V.
- What is the significance of the latch enable (LE) and output enable (OE) inputs?
The LE input controls the transparency of the latch, while the OE input controls the output state, setting it to high-impedance when HIGH.
- What are the operating temperature ranges for this component?
The component operates from -40 °C to +85 °C and from -40 °C to +125 °C.
- What kind of ESD protection does this component offer?
The component offers ESD protection exceeding 2000 V for HBM and 1000 V for CDM.
- What are the typical applications of the 74HC573DB,118?
Typical applications include industrial production, smart home appliances, electric vehicles, medical devices, and IoT devices.
- What package types are available for this component?
The component is available in SSOP20 (SOT339-1) and other package options.
- Does this component comply with any specific standards?
Yes, it complies with JEDEC standards: JESD8C (2.7 V to 3.6 V) and JESD7A (2.0 V to 6.0 V).
- What is the significance of the automotive qualification for the 74HC573D-Q100 variant?
The 74HC573D-Q100 variant is qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1), making it suitable for automotive applications.
