74F646SPC

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data Bus Transceiver
• Characteristics: High-speed, bidirectional data transfer, voltage level translation
• Package: 20-pin Small Outline Package (SOIC)
• Essence: Facilitates communication between different parts of a digital system
• Packaging/Quantity: Available in reels of 250 units

Specifications

• Supply Voltage: 4.5V to 5.5V
• Operating Temperature: -40°C to +85°C
• Data Rate: Up to 100 Mbps
• Number of Channels: 8
• Input/Output Compatibility: TTL/CMOS

Detailed Pin Configuration

1. A0: Address Input 0
2. A1: Address Input 1
3. A2: Address Input 2
4. OE: Output Enable
5. DIR: Direction Control
6. GND: Ground
7. B0: Data Bus B Bit 0
8. B1: Data Bus B Bit 1
9. B2: Data Bus B Bit 2
10. B3: Data Bus B Bit 3
11. B4: Data Bus B Bit 4
12. B5: Data Bus B Bit 5
13. B6: Data Bus B Bit 6
14. B7: Data Bus B Bit 7
15. VCC: Supply Voltage
16. A7: Address Input 7
17. A6: Address Input 6
18. A5: Address Input 5
19. A4: Address Input 4
20. A3: Address Input 3

Functional Features

• Bidirectional data transfer between two data buses
• Automatic direction control based on DIR pin
• Output enable/disable control using OE pin
• Voltage level translation between TTL and CMOS logic levels
• High-speed operation for efficient data transfer

Advantages

• Simplifies data communication in digital systems
• Supports high-speed data transfer up to 100 Mbps
• Provides bidirectional data flow with automatic direction control
• Enables voltage level translation between different logic families
• Compact package size allows for space-efficient designs

Disadvantages

• Limited number of channels (8)
• Requires careful consideration of input/output compatibility

Working Principles

The 74F646SPC is a data bus transceiver that facilitates bidirectional data transfer between two data buses. The direction of data flow is controlled by the DIR pin, while the OE pin enables or disables the output. This IC also performs voltage level translation, allowing seamless communication between different logic families such as TTL and CMOS. It operates at high speeds, ensuring efficient data transfer within digital systems.

Detailed Application Field Plans

• Interfacing microcontrollers with external memory modules
• Connecting peripheral devices to a central processing unit (CPU)
• Data communication between different subsystems within a digital system
• Integration into communication protocols like I2C or SPI

Alternative Models

• SN74LVC245APW: Octal Bus Transceiver with 3-State Outputs
• CD74HCT245E: Octal Bus Transceiver with 3-State Outputs
• MC74VHC245DT: Octal Bus Transceiver with 3-State Outputs

(Note: These alternative models may have slightly different specifications and pin configurations. Refer to their respective datasheets for detailed information.)

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