Overview
The SN74AHC573DBR is an octal transparent D-type latch manufactured by Texas Instruments. It is designed for 2-V to 5.5-V VCC operation, making it suitable for a wide range of applications. This component is part of the AHC (Advanced High-Speed CMOS) logic family, known for its high speed and low power consumption. The SN74AHC573DBR features 3-state outputs, allowing it to drive bus lines directly. Its primary use is in digital systems where data storage and transfer are required, such as in microcontrollers, data processing units, and communication systems.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Technology Family | AHC | - | Advanced High-Speed CMOS |
| Supply Voltage | 2 to 5.5 | V | - |
| Number of Channels | 8 | - | Octal |
| Output Type | 3-State | - | Can drive bus lines directly |
| Operating Temperature | -40 to 85 | °C | - |
| Package | SSOP-20 | - | Surface Mount |
| Propagation Delay | 10 to 50 | ns | High speed |
| IOL (Max) | 8 | mA | Low-level output current |
| IOH (Max) | -8 | mA | High-level output current |
| ICC (Max) | 40 | µA | Low power consumption |
Key Features
- Octal transparent D-type latch with 3-state outputs
- Operates from 2 V to 5.5 V, suitable for low-power applications
- High-speed operation with propagation delays from 10 ns to 50 ns
- Directly drives bus lines, reducing the need for additional drivers
- Over-voltage tolerant inputs for enhanced reliability
- Flow-through pinout for efficient PCB layout
Applications
The SN74AHC573DBR is widely used in various digital systems and applications. It is commonly found in microcontrollers, data processing units, and communication systems where data storage and transfer are essential. Its 3-state outputs make it ideal for driving bus lines in multi-drop configurations. Additionally, it is used in industrial automation, consumer electronics, and automotive electronics for signal buffering and data latching.
Q & A
1. What is the operating voltage range of the SN74AHC573DBR?
The SN74AHC573DBR operates from 2 V to 5.5 V.
2. What is the maximum propagation delay of the SN74AHC573DBR?
The maximum propagation delay is 50 ns.
3. Can the SN74AHC573DBR drive bus lines directly?
Yes, it features 3-state outputs that allow it to drive bus lines directly.
4. What is the package type of the SN74AHC573DBR?
It comes in an SSOP-20 package.
5. What is the maximum operating temperature of the SN74AHC573DBR?
The maximum operating temperature is 85°C.
6. What is the low-level output current (IOL) of the SN74AHC573DBR?
The low-level output current is 8 mA.
7. What is the high-level output current (IOH) of the SN74AHC573DBR?
The high-level output current is -8 mA.
8. What is the typical supply current (ICC) of the SN74AHC573DBR?
The typical supply current is 40 µA.
9. Is the SN74AHC573DBR over-voltage tolerant?
Yes, it has over-voltage tolerant inputs.
10. What is the primary use of the SN74AHC573DBR?
It is primarily used for data storage and transfer in digital systems.
