SN74ACT1284PWE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Function
• Characteristics: High-speed, low-power, 12-bit addressable latch
• Package: TSSOP-20
• Essence: Addressable Latch
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2 V to 6 V
• Input Voltage Range: 0 V to VCC
• Operating Temperature Range: -40°C to +85°C
• Output Current: ±24 mA
• Propagation Delay Time: 5.5 ns (typical)
• Power Dissipation: 500 mW (max)

Detailed Pin Configuration

The SN74ACT1284PWE4 has a TSSOP-20 package with the following pin configuration:

1. GND (Ground)
2. A0 (Address Input 0)
3. A1 (Address Input 1)
4. A2 (Address Input 2)
5. A3 (Address Input 3)
6. A4 (Address Input 4)
7. A5 (Address Input 5)
8. A6 (Address Input 6)
9. A7 (Address Input 7)
10. A8 (Address Input 8)
11. A9 (Address Input 9)
12. A10 (Address Input 10)
13. LE (Latch Enable)
14. OE (Output Enable)
15. Q0 (Output 0)
16. Q1 (Output 1)
17. Q2 (Output 2)
18. Q3 (Output 3)
19. Q4 (Output 4)
20. VCC (Supply Voltage)

Functional Features

The SN74ACT1284PWE4 is a high-speed, low-power 12-bit addressable latch. It allows the storage and retrieval of data at specific addresses. The latch can be enabled or disabled using the Latch Enable (LE) pin, and the outputs can be enabled or disabled using the Output Enable (OE) pin.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Addressable latch functionality

Disadvantages: - Limited number of addressable bits (12 bits) - Restricted voltage range (2 V to 6 V)

Working Principles

The SN74ACT1284PWE4 operates based on the principles of digital logic. When the latch enable signal (LE) is high, the inputs are latched and stored in the internal memory. The output enable signal (OE) controls whether the stored data is accessible at the outputs. When OE is low, the outputs are active, and when OE is high, the outputs are in a high-impedance state.

Detailed Application Field Plans

The SN74ACT1284PWE4 can be used in various applications that require addressable latch functionality, such as:

1. Memory systems: The latch can be used to store and retrieve data in memory systems, allowing for efficient data access.
2. Address decoding: The latch can be used in address decoding circuits to select specific memory locations or peripheral devices.
3. Data multiplexing: The latch can be used to multiplex data from multiple sources onto a single bus, enabling efficient data transfer.

Detailed and Complete Alternative Models

Some alternative models to the SN74ACT1284PWE4 include:

1. SN74ACT1284DWE4: Similar to SN74ACT1284PWE4 but with a different package (SOIC-20).
2. SN74ACT1284PWG4: Similar to SN74ACT1284PWE4 but with a different package (TSSOP-20).
3. SN74ACT1284NE4: Similar to SN74ACT1284PWE4 but with a different package (PDIP-20).

These alternative models offer similar functionality and characteristics, but with variations in package type.

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