PI74FCT646ATQ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Bus Transceiver
• Characteristics: High-speed, bidirectional, voltage-level translation
• Package: TQFP (Thin Quad Flat Pack)
• Essence: Transfers data between two buses with different voltage levels
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 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: 3.5ns (typical)
• Output Drive Capability: ±24mA
• ESD Protection: >2000V (Human Body Model)

Pin Configuration

The PI74FCT646ATQ has a total of 20 pins. The pin configuration is as follows:

1. A1 - Data Bus A, Bit 1
2. A2 - Data Bus A, Bit 2
3. A3 - Data Bus A, Bit 3
4. A4 - Data Bus A, Bit 4
5. A5 - Data Bus A, Bit 5
6. A6 - Data Bus A, Bit 6
7. A7 - Data Bus A, Bit 7
8. A8 - Data Bus A, Bit 8
9. GND - Ground
10. OE - Output Enable
11. DIR - Direction Control
12. B1 - Data Bus B, Bit 1
13. B2 - Data Bus B, Bit 2
14. B3 - Data Bus B, Bit 3
15. B4 - Data Bus B, Bit 4
16. B5 - Data Bus B, Bit 5
17. B6 - Data Bus B, Bit 6
18. B7 - Data Bus B, Bit 7
19. B8 - Data Bus B, Bit 8
20. VCC - Supply Voltage

Functional Features

• Bidirectional data transfer between two buses with different voltage levels
• High-speed operation with low propagation delay time
• Output drive capability allows for reliable signal transmission
• Output enable and direction control for flexible bus control

Advantages and Disadvantages

Advantages: - Enables communication between buses operating at different voltage levels - Fast data transfer with low delay - Robust output drive capability for reliable signal transmission

Disadvantages: - Limited to bidirectional data transfer only - Requires careful consideration of voltage compatibility between buses

Working Principles

The PI74FCT646ATQ is a bus transceiver designed to facilitate data transfer between two buses operating at different voltage levels. It acts as a bridge, translating the voltage levels of the input data from one bus to match the voltage requirements of the other bus. The direction control pin determines the direction of data flow, while the output enable pin enables or disables the output drivers.

Detailed Application Field Plans

The PI74FCT646ATQ is commonly used in various applications where data needs to be transferred between buses operating at different voltage levels. Some typical application fields include:

1. Microcontroller interfacing with peripheral devices
2. Communication systems involving multiple voltage domains
3. Industrial automation and control systems
4. Networking equipment and routers
5. Automotive electronics

Detailed and Complete Alternative Models

1. SN74LVC4245A: Octal Bus Transceiver with 3-State Outputs
2. MC74VHC245: Octal Bus Transceiver with 3-State Outputs
3. CD74HCT245: Octal Bus Transceiver with 3-State Outputs
4. 74HC646: Octal Bus Transceiver/Registers

These alternative models offer similar functionality and can be considered as alternatives to the PI74FCT646ATQ depending on specific requirements.

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