SN74AS885NTG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Function
• Characteristics: High-speed, Low-power, TTL-Compatible
• Package: 20-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: A high-performance octal bus transceiver with non-inverting 3-state outputs
• Packaging/Quantity: Tape and Reel, 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: 6ns (typical)
• Output Current: ±24mA
• Input Capacitance: 4pF
• Output Capacitance: 8pF

Detailed Pin Configuration

The SN74AS885NTG4 has a total of 20 pins, numbered as follows:

1. OE (Output Enable) 1
2. A0 (Input A0)
3. B0 (Input B0)
4. A1 (Input A1)
5. B1 (Input B1)
6. A2 (Input A2)
7. B2 (Input B2)
8. A3 (Input A3)
9. B3 (Input B3)
10. GND (Ground)
11. B4 (Input B4)
12. A4 (Input A4)
13. B5 (Input B5)
14. A5 (Input A5)
15. B6 (Input B6)
16. A6 (Input A6)
17. B7 (Input B7)
18. A7 (Input A7)
19. Y (Output Y)
20. VCC (Supply Voltage)

Functional Features

• Octal bus transceiver with non-inverting 3-state outputs
• Bidirectional data flow between A and B buses
• Output enable control for disabling the outputs
• TTL-compatible inputs and outputs
• High-speed operation with low power consumption

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - Low-power consumption helps in reducing energy usage - TTL compatibility ensures easy integration with existing systems - Non-inverting 3-state outputs provide flexibility in signal routing

Disadvantages: - Limited supply voltage range may restrict certain applications - Relatively small input and output capacitance may limit performance in high-frequency applications

Working Principles

The SN74AS885NTG4 is designed to facilitate bidirectional data transfer between two buses, A and B. The direction of data flow is controlled by the OE (Output Enable) pin. When OE is low, the outputs are enabled, allowing data to pass from A to B or vice versa. When OE is high, the outputs are disabled, effectively isolating the A and B buses.

The inputs and outputs of the SN74AS885NTG4 are TTL-compatible, meaning they can interface directly with other TTL logic devices. This makes it easy to integrate the IC into existing systems without the need for additional level-shifting circuitry.

Detailed Application Field Plans

The SN74AS885NTG4 can be used in various applications that require bidirectional data transfer, such as:

1. Data communication systems
2. Memory interfaces
3. Bus arbitration circuits
4. Input/output (I/O) expansion modules
5. Microprocessor-based systems

Its high-speed operation and low-power consumption make it suitable for applications where efficient data transfer and energy efficiency are crucial.

Detailed and Complete Alternative Models

1. SN74AS885DW - 20-pin SOIC (Small Outline Integrated Circuit) package
2. SN74AS885DWR - Tape and Reel packaging, 2500 units per reel
3. SN74AS885NT - 20-pin PDIP (Plastic Dual In-line Package) package

These alternative models offer similar functionality to the SN74AS885NTG4 but come in different packages, allowing for flexibility in design and integration.

In conclusion, the SN74AS885NTG4 is a high-performance octal bus transceiver with non-inverting 3-state outputs. Its TTL compatibility, high-speed operation, and low-power consumption make it suitable for various applications requiring bidirectional data transfer.