SN74ALS573CDBR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Octal D-type transparent latch
• Characteristics:
  • High-speed operation
  • Wide operating voltage range
  • Low power consumption
  • Compatible with TTL and CMOS logic levels
• Package: 20-pin SSOP (Shrink Small Outline Package)
• Essence: The SN74ALS573CDBR is a latch that can store and output eight bits of data. It is commonly used in digital systems for temporary storage and data transfer.
• Packaging/Quantity: Available in reels, with 2500 units per reel.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 8 ns (typical)
• Output Current: ±24 mA

Detailed Pin Configuration

The SN74ALS573CDBR has a total of 20 pins, which are assigned as follows:

1. GND (Ground)
2. D0 (Data input 0)
3. D1 (Data input 1)
4. D2 (Data input 2)
5. D3 (Data input 3)
6. D4 (Data input 4)
7. D5 (Data input 5)
8. D6 (Data input 6)
9. D7 (Data input 7)
10. LE (Latch enable)
11. OE (Output enable)
12. Q0 (Output 0)
13. Q1 (Output 1)
14. Q2 (Output 2)
15. Q3 (Output 3)
16. Q4 (Output 4)
17. Q5 (Output 5)
18. Q6 (Output 6)
19. Q7 (Output 7)
20. VCC (Supply voltage)

Functional Features

• Octal D-type transparent latch with 3-state outputs
• Latch enable (LE) input controls the storage of data on the inputs
• Output enable (OE) input enables or disables the outputs
• Compatible with both TTL and CMOS logic levels
• High-speed operation allows for efficient data transfer

Advantages and Disadvantages

Advantages: - High-speed operation makes it suitable for time-critical applications - Wide operating voltage range allows for flexibility in different systems - Low power consumption helps conserve energy - Compatibility with TTL and CMOS logic levels simplifies integration into existing designs

Disadvantages: - Limited output current may restrict its use in certain high-current applications - Only supports octal (8-bit) data storage and transfer, not suitable for larger data sizes

Working Principles

The SN74ALS573CDBR operates as an octal D-type transparent latch. When the latch enable (LE) input is high, the data inputs (D0-D7) are stored and reflected at the outputs (Q0-Q7). The latch remains transparent as long as LE is high, allowing changes in the data inputs to propagate to the outputs.

The output enable (OE) input controls whether the outputs are enabled or disabled. When OE is low, the outputs are active and reflect the stored data. When OE is high, the outputs are in a high-impedance state, effectively disconnecting them from the rest of the circuit.

Detailed Application Field Plans

The SN74ALS573CDBR can be used in various digital systems where temporary storage and data transfer are required. Some application examples include:

1. Microcontrollers: Used to store and transfer data between the microcontroller and other peripherals.
2. Data communication systems: Used for buffering and temporary storage of data during transmission.
3. Memory systems: Employed as a latch to hold address or control signals temporarily.

Detailed and Complete Alternative Models

1. SN74ALS574CDBR: Similar to SN74ALS573CDBR, but with inverted outputs.
2. SN74ALS374CDBR: Octal D-type latch with 3-state outputs and non-inverted outputs.
3. SN74ALS373CDBR: Octal transparent latch with 3-state outputs and non-inverted outputs.

These alternative models offer similar functionality but may have slight differences in pin configuration or additional features.

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