SN74LVT245BNSR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-speed, low-power, bidirectional voltage translation
• Package: NSR Package (20-pin plastic small outline package)
• Essence: Voltage level shifting and signal buffering
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 2.5ns (Max)
• Output Drive Capability: ±12mA
• Input Capacitance: 4pF (Typ)

Detailed Pin Configuration

The SN74LVT245BNSR has a total of 20 pins, which are assigned as follows:

1. OE (Output Enable) - Active Low Output Enable
2. A1 - Data Input/Output Port A1
3. B1 - Data Input/Output Port B1
4. A2 - Data Input/Output Port A2
5. B2 - Data Input/Output Port B2
6. A3 - Data Input/Output Port A3
7. B3 - Data Input/Output Port B3
8. GND - Ground
9. B4 - Data Input/Output Port B4
10. A4 - Data Input/Output Port A4
11. B5 - Data Input/Output Port B5
12. A5 - Data Input/Output Port A5
13. B6 - Data Input/Output Port B6
14. A6 - Data Input/Output Port A6
15. B7 - Data Input/Output Port B7
16. A7 - Data Input/Output Port A7
17. VCC - Positive Power Supply
18. DIR (Direction Control) - Direction Control Input
19. GND - Ground
20. OE (Output Enable) - Active Low Output Enable

Functional Features

• Bidirectional voltage translation between two different voltage domains
• Allows interfacing between devices operating at different voltage levels
• Provides signal buffering and isolation between input and output ports
• High-speed operation with minimal propagation delay
• Low power consumption for efficient energy usage

Advantages and Disadvantages

Advantages

• Enables seamless communication between devices with different voltage requirements
• Protects sensitive components from voltage mismatch and potential damage
• Offers reliable signal transmission with minimal distortion
• Compact package size allows for space-efficient designs
• Low power consumption helps prolong battery life in portable applications

Disadvantages

• Limited to voltage translation within the specified supply voltage range
• May introduce slight signal degradation due to voltage level shifting
• Requires careful consideration of timing constraints when used in high-speed applications

Working Principles

The SN74LVT245BNSR operates by receiving data inputs from one voltage domain and translating them to the appropriate voltage level of the other domain. The direction control pin determines the direction of data flow, allowing bidirectional communication. The output enable pin enables or disables the output buffers, providing flexibility in controlling the data transmission.

Detailed Application Field Plans

The SN74LVT245BNSR finds applications in various fields where voltage level shifting and signal buffering are required. Some specific application areas include:

1. Microcontroller Interfacing: Facilitates communication between microcontrollers operating at different voltage levels.
2. Sensor Networks: Enables connectivity between sensors and microcontrollers with varying voltage requirements.
3. Industrial Automation: Allows interfacing between different control systems operating at different voltage levels.
4. Communication Systems: Facilitates signal translation between devices in communication networks.
5. Automotive Electronics: Enables voltage level shifting in automotive electronic systems.

Detailed and Complete Alternative Models

1. SN74LVC245APW - 20-pin TSSOP package, similar functionality to SN74LVT245BNSR
2. SN74LVCH245ADGVR - 20-pin TVSOP package, lower power consumption compared to SN74LVT245BNSR
3. SN74AVC4T245RSVR - 16-pin VQFN package, smaller form factor with similar voltage translation capabilities

These alternative models offer similar functionality to the SN74LVT245BNSR and can be considered based on specific application requirements.

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