SN74ALS645A-1NG4

Product Overview

Category

SN74ALS645A-1NG4 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in digital systems for data transmission and conversion.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Compatibility with TTL logic levels
• 3-state outputs for bus-oriented applications

Package

SN74ALS645A-1NG4 is available in a standard 20-pin DIP (Dual Inline Package) format.

Essence

The essence of SN74ALS645A-1NG4 lies in its ability to facilitate efficient data transmission and conversion within digital systems.

Packaging/Quantity

SN74ALS645A-1NG4 is typically packaged in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact quantity may vary depending on the manufacturer.

Specifications

• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Input Voltage Levels: TTL compatible
• Output Current: ±24mA
• Propagation Delay Time: 10ns (max)
• Output Capacitance: 15pF (typ)

Detailed Pin Configuration

1. A0 - Data Bus A, Bit 0
2. A1 - Data Bus A, Bit 1
3. A2 - Data Bus A, Bit 2
4. A3 - Data Bus A, Bit 3
5. A4 - Data Bus A, Bit 4
6. A5 - Data Bus A, Bit 5
7. A6 - Data Bus A, Bit 6
8. A7 - Data Bus A, Bit 7
9. GND - Ground
10. OE - Output Enable
11. DIR - Direction Control
12. B7 - Data Bus B, Bit 7
13. B6 - Data Bus B, Bit 6
14. B5 - Data Bus B, Bit 5
15. B4 - Data Bus B, Bit 4
16. B3 - Data Bus B, Bit 3
17. B2 - Data Bus B, Bit 2
18. B1 - Data Bus B, Bit 1
19. B0 - Data Bus B, Bit 0
20. VCC - Supply Voltage

Functional Features

• Bidirectional data transmission between two buses (A and B)
• Direction control for selecting the data flow direction
• Output enable/disable control for tri-state outputs
• TTL compatible input and output voltage levels
• High-speed operation for efficient data transfer

Advantages and Disadvantages

Advantages

• High-speed operation allows for quick data transmission
• Low power consumption helps in reducing energy usage
• Wide operating voltage range provides flexibility in various applications
• Compatibility with TTL logic levels ensures seamless integration with existing systems
• Tri-state outputs enable bus-oriented applications

Disadvantages

• Limited number of data bits (8 bits) may not be suitable for certain applications requiring larger data sizes
• Propagation delay time may introduce timing issues in highly time-sensitive systems

Working Principles

SN74ALS645A-1NG4 operates by receiving data from one bus (A) and transmitting it to another bus (B) or vice versa. The direction control pin (DIR) determines the data flow direction, while the output enable pin (OE) enables or disables the tri-state outputs. The IC is designed to operate at high speeds, ensuring efficient data transfer within digital systems.

Detailed Application Field Plans

SN74ALS645A-1NG4 finds applications in various fields, including: 1. Data communication systems 2. Microprocessor-based systems 3. Industrial automation 4. Telecommunications equipment 5. Networking devices

Detailed and Complete Alternative Models

Some alternative models to SN74ALS645A-1NG4 are: 1. SN74ALS646A-1NG4 2. SN74ALS647A-1NG4 3. SN74ALS648A-1NG4 4. SN74ALS649A-1NG4 5. SN74ALS640A-1NG4

These alternative models offer similar functionality and characteristics, providing options for different design requirements.

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