Overview
The 74HCT573PW,112 is an 8-bit D-type transparent latch with 3-state outputs, manufactured by Nexperia USA Inc. This device is part of the 74HCT family, which is compatible with TTL (Transistor-Transistor Logic) input levels. It features latch enable (LE) and output enable (OE) inputs, making it versatile for various digital circuit applications. The 74HCT573PW is designed to be high-speed and is pin-compatible with Low-power Schottky TTL (LSTTL) devices, adhering to JEDEC standard no. 7A.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| VCC | 4.5 - 5.5 | V | Operating voltage range |
| Logic switching levels | TTL | - | - |
| Output drive capability | ± 6 | mA | - |
| tpd (Propagation delay Dn to Qn) | 17 | ns | VCC = 5 V, CL = 15 pF |
| tpd (Propagation delay LE to Qn) | 15 | ns | VCC = 5 V, CL = 15 pF |
| ten (Enable time OE to Qn) | 17 | ns | VCC = 4.5 V |
| tdis (Disable time OE to Qn) | 18 | ns | VCC = 4.5 V |
| Tamb | -40 to 125 | °C | Operating temperature range |
| Rth(j-a) | 100 | K/W | Thermal resistance from junction to ambient |
| Package | TSSOP20 (SOT360-1) | - | - |
Key Features
- 8-bit D-type transparent latches: Each latch has a separate D-type input, and the outputs are 3-state, making it suitable for bus-oriented applications.
- Latch Enable (LE) and Output Enable (OE) inputs: The LE input controls the transparency of the latches, while the OE input controls the output state, allowing the outputs to be in a high-impedance OFF-state when OE is HIGH.
- TTL compatible inputs: The 74HCT573PW is designed to work with TTL input levels, ensuring compatibility with a wide range of digital circuits.
- High-speed operation: The device operates at high speeds with propagation delays as low as 17 ns for Dn to Qn and 15 ns for LE to Qn at VCC = 5 V and CL = 15 pF.
- Low power dissipation: The device has low power dissipation characteristics, making it energy-efficient for various applications.
- Inputs and outputs on opposite sides of the package: This design facilitates easy interface with microprocessors and microcomputers.
Applications
- Microprocessor and microcomputer interfaces: The 74HCT573PW is useful as an input or output port for microprocessors and microcomputers due to its 3-state outputs and separate latch enable and output enable controls.
- Bus-oriented applications: The device is suitable for applications requiring data to be latched and then presented on a bus, such as in memory interfaces, data buffers, and other digital circuits.
- Automotive and industrial systems: Given its robust operating temperature range and low power dissipation, it is suitable for use in automotive and industrial environments.
- Consumer and mobile devices: The high-speed and low power characteristics make it a good fit for consumer electronics and mobile devices where efficiency and speed are crucial.
Q & A
- What is the primary function of the 74HCT573PW?
The primary function of the 74HCT573PW is to act as an 8-bit D-type transparent latch with 3-state outputs, allowing data to be latched and controlled through latch enable and output enable inputs.
- What are the input logic levels for the 74HCT573PW?
The 74HCT573PW is compatible with TTL (Transistor-Transistor Logic) input levels).
- How do the latch enable (LE) and output enable (OE) inputs function?
The LE input controls the transparency of the latches, allowing data to enter the latches when LE is HIGH. The OE input controls the output state, placing the outputs in a high-impedance OFF-state when OE is HIGH).
- What is the operating voltage range for the 74HCT573PW?
The operating voltage range for the 74HCT573PW is 4.5 V to 5.5 V).
- What is the propagation delay for the 74HCT573PW?
The propagation delay from Dn to Qn is approximately 17 ns at VCC = 5 V and CL = 15 pF).
- What is the thermal resistance from junction to ambient for the 74HCT573PW?
The thermal resistance from junction to ambient (Rth(j-a)) is 100 K/W).
- What package type is the 74HCT573PW available in?
The 74HCT573PW is available in a TSSOP20 (SOT360-1) package).
- What are the typical applications for the 74HCT573PW?
The 74HCT573PW is typically used in microprocessor and microcomputer interfaces, bus-oriented applications, automotive and industrial systems, and consumer electronics).
- Is the 74HCT573PW RoHS compliant?
Yes, the 74HCT573PW is RoHS compliant).
- What is the operating temperature range for the 74HCT573PW?
The operating temperature range for the 74HCT573PW is -40°C to 125°C).
