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SN74AS757N
Product Overview
- Category: Integrated Circuit (IC)
- Use: Logic Gate
- Characteristics: High-speed, low-power consumption
- Package: DIP (Dual In-line Package)
- Essence: TTL (Transistor-Transistor Logic) logic gate
- Packaging/Quantity: Tray, 25 pieces per tray
Specifications
- Technology: Advanced Schottky
- Supply Voltage: 4.5V to 5.5V
- Input Voltage: 0V to Vcc
- Operating Temperature: -55°C to +125°C
- Propagation Delay: 7ns (typical)
- Output Current: ±24mA
- Pin Count: 16
Detailed Pin Configuration
- A1 - Input A1
- B1 - Input B1
- C1 - Input C1
- D1 - Input D1
- E1 - Input E1
- F1 - Input F1
- G1 - Input G1
- H1 - Input H1
- Y1 - Output Y1
- Y2 - Output Y2
- Y3 - Output Y3
- Y4 - Output Y4
- Y5 - Output Y5
- Y6 - Output Y6
- Y7 - Output Y7
- Y8 - Output Y8
Functional Features
- The SN74AS757N is an octal transparent latch with 3-state outputs.
- It has eight data inputs (A1-H1) and eight corresponding outputs (Y1-Y8).
- The latch is transparent when the enable input (E1) is high, allowing the data inputs to appear at the outputs.
- When the enable input is low, the latch holds the last data input values.
- The latch outputs are 3-state, which means they can be in a high-impedance state when the output enable input (G1) is low.
Advantages and Disadvantages
Advantages: - High-speed operation - Low-power consumption - Multiple outputs for versatile applications - 3-state outputs allow for bus sharing
Disadvantages: - Limited number of inputs and outputs - Requires external control signals for proper operation
Working Principles
The SN74AS757N operates based on TTL logic. When the enable input (E1) is high, the latch becomes transparent, allowing the data inputs to pass through to the outputs. When the enable input is low, the latch holds the last data input values. The output enable input (G1) controls whether the latch outputs are active or in a high-impedance state.
Detailed Application Field Plans
The SN74AS757N can be used in various applications, including: - Data storage systems - Address decoding circuits - Bus interface units - Multiplexers - Register banks
Detailed and Complete Alternative Models
Some alternative models that serve similar functions to the SN74AS757N include: - SN74LS373: Octal D-type transparent latch with 3-state outputs - SN74HC573: Octal D-type latch with 3-state outputs - SN74F373: Octal transparent latch with 3-state outputs
These alternative models offer different technology families (LS, HC, F) and may have variations in speed, power consumption, and voltage requirements.
Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SN74AS757N v technických řešeních
Sure! Here are 10 common questions and answers related to the application of SN74AS757N in technical solutions:
Q: What is SN74AS757N? A: SN74AS757N is a specific type of integrated circuit (IC) commonly used in digital systems for data multiplexing and demultiplexing.
Q: What are the key features of SN74AS757N? A: SN74AS757N features 8-bit data width, multiple input/output options, and compatibility with TTL logic levels.
Q: How can SN74AS757N be used in technical solutions? A: SN74AS757N can be used for various applications such as data routing, signal switching, bus interfacing, and address decoding.
Q: What is the power supply voltage range for SN74AS757N? A: The recommended power supply voltage range for SN74AS757N is typically between 4.5V and 5.5V.
Q: Can SN74AS757N handle high-speed data signals? A: Yes, SN74AS757N is designed to operate at high speeds and can handle data rates up to several megahertz.
Q: Does SN74AS757N support bidirectional data flow? A: No, SN74AS757N is a unidirectional IC, meaning it can only handle data flow in one direction at a time.
Q: Are there any special considerations for PCB layout when using SN74AS757N? A: It is recommended to follow proper grounding techniques, minimize trace lengths, and ensure adequate decoupling capacitors for stable operation.
Q: Can SN74AS757N be cascaded to increase the number of inputs/outputs? A: Yes, multiple SN74AS757N ICs can be cascaded together to expand the number of inputs or outputs as required.
Q: What is the typical operating temperature range for SN74AS757N? A: SN74AS757N is typically rated for operation within the temperature range of -40°C to 85°C.
Q: Where can I find more detailed information about SN74AS757N? A: The datasheet provided by the manufacturer is the best source for detailed technical information about SN74AS757N, including pin configurations, electrical characteristics, and application notes.
Please note that the answers provided here are general and may vary depending on specific design requirements and application scenarios. It is always recommended to refer to the official documentation and consult with experts for accurate and up-to-date information.