Overview
The 74HC573DB-Q100118, produced by NXP USA Inc. (now part of Nexperia), is an 8-bit D-type transparent latch with 3-state outputs. This device is part of the 74HC573-Q100 and 74HCT573-Q100 series, which are high-speed Si-gate CMOS devices. It is designed to be pin compatible with Low-power Schottky TTL (LSTTL) and complies with JEDEC standards.
The device features latch enable (LE) and output enable (OE) inputs, allowing for flexible control over data latching and output states. When the LE input is HIGH, the latches are transparent, meaning the output changes state each time the 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 OE input causes the outputs to assume a high-impedance OFF-state, without affecting the state of the latches.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC supply voltage | 2.0 | 5.0 | 6.0 | V |
| VI input voltage | 0 | - | VCC | V |
| VO output voltage | 0 | - | VCC | V |
| Tamb ambient temperature | -40 | - | 125 | °C |
| tpd propagation delay | - | - | 14 | ns |
| fmax maximum frequency | - | - | 8 | MHz |
| Output drive capability | - | - | ±7.8 | mA |
| Package | - | - | 20-SSOP (SOT339-1) | - |
Key Features
- Automotive product qualification in accordance with AEC-Q100 (Grade 1), specified from -40°C to +85°C and from -40°C to +125°C.
- Input levels: CMOS level for 74HC573-Q100 and TTL level for 74HCT573-Q100.
- Inputs and outputs on opposite sides of the package, allowing 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.
- Multiple package options, including SO20, SSOP, and others.
- ESD protection: HBM exceeds 2000 V, CDM exceeds 1000 V.
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B.
Applications
The 74HC573DB-Q100118 is suitable for a variety of applications, particularly in automotive and industrial environments due to its AEC-Q100 qualification. It is useful in:
- Automotive systems requiring robust and reliable logic functions.
- Microprocessor and microcomputer systems as input or output ports.
- Bus-oriented applications where 3-state outputs are necessary.
- General-purpose logic circuits requiring transparent latches with 3-state outputs).
Q & A
- What is the primary function of the 74HC573DB-Q100118?
The primary function is to act as an 8-bit D-type transparent latch with 3-state outputs, allowing for data latching and output control.
- What are the input levels for the 74HC573-Q100 and 74HCT573-Q100?
The 74HC573-Q100 uses CMOS level inputs, while the 74HCT573-Q100 uses TTL level inputs).
- What is the operating temperature range for this device?
The device operates from -40°C to +125°C).
- What is the purpose of the LE and OE inputs?
The LE (Latch Enable) input controls when data enters the latches, and the OE (Output Enable) input controls the output state, setting it to high-impedance when HIGH).
- What type of ESD protection does this device have?
The device has ESD protection exceeding 2000 V for HBM and 1000 V for CDM).
- Is this device suitable for automotive applications?
Yes, it is qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1)).
- What are the package options available for this device?
Multiple package options are available, including SO20, SSOP, and others).
- How does the device interface with microprocessors?
The device has inputs and outputs on opposite sides of the package, making it easy to interface with microprocessors).
- What is the maximum propagation delay of the device?
The maximum propagation delay is 14 ns).
- What is the maximum frequency of operation for this device?
The maximum frequency of operation is 8 MHz).
