SN74BCT646DWRE4

Product Overview

• Category: Integrated Circuit
• Use: Bus Transceiver and Register
• Characteristics: High-speed, Bi-directional, 3-state, Voltage-level Translation
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Transfers data between two bidirectional buses with different voltage levels
• Packaging/Quantity: Tape and Reel, 2500 pieces 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 Drive Capability: ±24mA

Detailed Pin Configuration

1. OE (Output Enable)
2. A1 (Bus A Data Inputs/Outputs)
3. A2 (Bus A Data Inputs/Outputs)
4. A3 (Bus A Data Inputs/Outputs)
5. A4 (Bus A Data Inputs/Outputs)
6. A5 (Bus A Data Inputs/Outputs)
7. GND (Ground)
8. B5 (Bus B Data Inputs/Outputs)
9. B4 (Bus B Data Inputs/Outputs)
10. B3 (Bus B Data Inputs/Outputs)
11. B2 (Bus B Data Inputs/Outputs)
12. B1 (Bus B Data Inputs/Outputs)
13. DIR (Direction Control)
14. VCC (Supply Voltage)
15. B6 (Bus B Data Inputs/Outputs)
16. B7 (Bus B Data Inputs/Outputs)
17. B8 (Bus B Data Inputs/Outputs)
18. B9 (Bus B Data Inputs/Outputs)
19. B10 (Bus B Data Inputs/Outputs)
20. GND (Ground)

Functional Features

• Bi-directional data transfer between Bus A and Bus B
• Voltage-level translation between different voltage domains
• 3-state outputs for bus isolation
• Output enable control for enabling/disabling the outputs
• Direction control for selecting the direction of data transfer

Advantages and Disadvantages

Advantages: - High-speed operation - Bi-directional data transfer capability - Voltage-level translation for interfacing different logic families - 3-state outputs for bus isolation

Disadvantages: - Limited supply voltage range (4.5V to 5.5V) - Propagation delay time may affect timing-sensitive applications

Working Principles

The SN74BCT646DWRE4 is a bus transceiver and register that facilitates bidirectional data transfer between two buses with different voltage levels. It uses voltage-level translation techniques to ensure compatibility between different logic families. The direction of data transfer is controlled by the DIR pin, while the OE pin enables or disables the outputs. The device operates at high speed and provides 3-state outputs for bus isolation.

Detailed Application Field Plans

1. Interfacing between microcontrollers operating at different voltage levels
2. Communication between digital signal processors and memory modules
3. Data transfer between FPGA (Field-Programmable Gate Array) and external devices
4. Interface between different logic families in mixed-signal systems
5. Bus communication in industrial automation and control systems

Detailed and Complete Alternative Models

1. SN74LVC4245A: Octal Bus Transceiver with 3-State Outputs
2. SN74LVCH245A: Octal Bus Transceiver with 3-State Outputs
3. SN74AVC4T774: 4-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation

These alternative models offer similar functionality and can be used as substitutes for the SN74BCT646DWRE4 in various applications.

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