SN74F245DBR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Bus Transceiver
• Characteristics: High-speed, bidirectional data transfer, voltage level shifting
• Package: SSOP-20
• Essence: Transfers data between two bidirectional buses with different voltage levels
• 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
• Maximum Data Rate: 100Mbps

Detailed Pin Configuration

The SN74F245DBR has a total of 20 pins, which are assigned as follows:

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

Functional Features

• Bidirectional data transfer between two buses
• Voltage level shifting capability
• High-speed operation
• Non-inverting outputs

Advantages and Disadvantages

Advantages: - Allows interfacing between buses with different voltage levels - Supports high-speed data transfer - Non-inverting outputs ensure signal integrity

Disadvantages: - Limited to a maximum data rate of 100Mbps - Requires external control signals for direction and output enable

Working Principles

The SN74F245DBR is a bidirectional bus transceiver that facilitates data transfer between two buses with different voltage levels. It operates based on the control signals provided to the DIR and OE pins. When the DIR pin is set to logic high, data is transferred from Bus A to Bus B. Conversely, when the DIR pin is set to logic low, data is transferred from Bus B to Bus A. The OE pin enables or disables the outputs of the transceiver.

Detailed Application Field Plans

The SN74F245DBR is commonly used in various applications where data transfer between buses with different voltage levels is required. Some specific application fields include:

1. Microcontroller Interfacing: The transceiver allows communication between microcontrollers operating at different voltage levels.
2. Industrial Automation: It facilitates data exchange between different subsystems within an industrial automation setup.
3. Communication Systems: The transceiver can be utilized in communication systems to interface between different modules or devices.

Detailed and Complete Alternative Models

1. SN74LVC245A: Low-voltage CMOS bus transceiver with similar functionality but operates at a lower voltage range.
2. SN74HC245: High-speed CMOS bus transceiver with comparable features but operates at a different voltage range.
3. SN74LVCH245A: Low-voltage CMOS bus transceiver with enhanced ESD protection.

These alternative models provide similar functionality to the SN74F245DBR but may have different voltage ranges, speed capabilities, or additional features.

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