74LVT245BQ,115

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifting and Bus Transceiver
• Characteristics: Low Voltage, Bi-directional, Tri-state Outputs
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Logic Level Translator and Buffer
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 1.2V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 200MHz
• Number of Channels: 8
• Input/Output Type: Tri-state
• Propagation Delay Time: 4.5ns (max)
• Output Current: ±24mA
• ESD Protection: Human Body Model > 2000V

Detailed Pin Configuration

The 74LVT245BQ,115 IC has a total of 20 pins. The pin configuration is as follows:

+-------------------+ OE --|1 20|-- VCC A1~A8 -|2 19|-- B1~B8 GND --|3 18|-- DIR B1~B8 -|4 17|-- A1~A8 DIR --|5 16|-- GND NC --|6 15|-- NC NC --|7 74LVT245BQ 14|-- NC NC --|8 13|-- NC NC --|9 12|-- NC NC --|10 11|-- NC +-------------------+

Functional Features

• Bi-directional level shifting between two voltage domains.
• Tri-state outputs allow multiple devices to share a common bus.
• Low voltage operation makes it suitable for battery-powered applications.
• High-speed operation up to 200MHz enables efficient data transfer.

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Bi-directional functionality simplifies bidirectional communication.
• Tri-state outputs enable bus sharing and reduce conflicts.
• Low power consumption enhances energy efficiency.
• ESD protection ensures robustness against electrostatic discharges.

Disadvantages

• Limited number of channels (8) may not be sufficient for complex systems.
• Propagation delay time may affect real-time applications with tight timing constraints.
• Sensitive to voltage spikes or noise on input signals.

Working Principles

The 74LVT245BQ,115 is a logic level translator and buffer IC. It operates by receiving input signals from one voltage domain and translating them to the corresponding voltage levels of another domain. The direction of translation is controlled by the DIR pin. When DIR is high, the A-side inputs are translated to the B-side outputs, and vice versa when DIR is low. The OE (Output Enable) pin controls the tri-state outputs, allowing multiple devices to share a common bus without conflicts.

Detailed Application Field Plans

The 74LVT245BQ,115 is commonly used in various applications where level shifting and bus transceiver functions are required. Some typical application fields include: - Microcontroller interfacing with different voltage peripherals. - Communication interfaces between devices operating at different voltage levels. - Data buses in mixed-voltage systems. - Battery-powered devices requiring low voltage operation.

Detailed and Complete Alternative Models

• SN74LVC245A: Similar functionality with improved characteristics.
• 74HC245: Non-inverting bus transceiver with higher voltage tolerance.
• TXB0108: Bi-directional level shifter with automatic direction sensing.

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