Encyclopedia Entry: 74LVT646DB,118

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-speed, low-power, bidirectional voltage translation
• Package: SSOP-24
• Essence: Efficient voltage level shifting and bus transceiving capabilities
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 1.2V to 3.6V
• Logic Family: LVT
• Number of Channels: 8
• Input/Output Compatibility: TTL, CMOS
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 4.5ns (Max)
• Output Drive Capability: ±24mA

Detailed Pin Configuration

The 74LVT646DB,118 IC has a total of 24 pins arranged as follows:

┌───┬───┐ OE1 ─┤1 └─ 24┬─ VCC OE2 ─┤2 23├─ GND A1 ─┤3 22├─ B1 A2 ─┤4 21├─ B2 A3 ─┤5 20├─ B3 A4 ─┤6 19├─ B4 A5 ─┤7 18├─ B5 A6 ─┤8 17├─ B6 A7 ─┤9 16├─ B7 A8 ─┤10 15├─ B8 GND ─┤11 14├─ VCC DIR ─┤12 13├─ OE3 └───────┘

Functional Features

• Bidirectional voltage level shifting between two different logic families (TTL and CMOS)
• Provides voltage translation from a lower voltage system to a higher voltage system and vice versa
• Enables interfacing between devices operating at different voltage levels
• Supports bus transceiving with direction control

Advantages

• High-speed operation allows for efficient data transfer between different voltage domains
• Low-power consumption makes it suitable for battery-powered applications
• Wide supply voltage range provides flexibility in various systems
• Bidirectional functionality simplifies the design of bidirectional communication interfaces

Disadvantages

• Limited number of channels (8) may not be sufficient for complex systems requiring more connections
• Propagation delay may introduce timing issues in high-frequency applications
• SSOP package may require careful handling during assembly due to its small size

Working Principles

The 74LVT646DB,118 is designed using LVT (Low Voltage TTL) logic family technology. It utilizes a combination of MOSFETs and CMOS circuitry to achieve efficient voltage level shifting and bus transceiving capabilities. The IC operates by monitoring the input signals and translating them to the appropriate voltage levels based on the selected logic family.

Detailed Application Field Plans

The 74LVT646DB,118 is commonly used in various applications that require voltage level shifting and bus transceiving, such as: - Interfacing between microcontrollers and peripheral devices operating at different voltage levels - Communication interfaces between different logic families in mixed-signal systems - Data transmission between modules or boards with varying voltage requirements

Detailed and Complete Alternative Models

• 74LVC646APW,118
• 74LVCH646ADB,118
• 74LVT16245BDGG,112

These alternative models offer similar functionality and can be considered as replacements for the 74LVT646DB,118 depending on specific requirements.

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