Encyclopedia Entry: 74LVQ245TTR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-speed, low-voltage, bidirectional data transfer
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Transferring digital signals between systems with different voltage levels
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 1.65V to 5.5V
• Logic Family: LVQ
• Number of Channels: 8
• Input/Output Type: Tri-State
• Data Rate: Up to 400 Mbps
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74LVQ245TTR IC has a total of 20 pins, which are arranged as follows:

┌───┐ A1 ─│ │─ VCC A2 ─│ │─ B1 A3 ─│ │─ B2 A4 ─│ │─ B3 A5 ─│ │─ B4 A6 ─│ │─ B5 A7 ─│ │─ B6 A8 ─│ │─ B7 GND ─│ │─ B8 DIR/ OE ─│ │─ A8 B8 ─│ │─ A7 B7 ─│ │─ A6 B6 ─│ │─ A5 B5 ─│ │─ A4 B4 ─│ │─ A3 B3 ─│ │─ A2 B2 ─│ │─ A1 GND ─│ │─ DIR/ OE B1 ─│ │─ NC VCC ─│ │─ NC └───┘

Functional Features

• Bidirectional data transfer between systems with different voltage levels
• Automatic direction control based on the DIR/ OE pin
• Tri-State outputs for bus sharing

Advantages and Disadvantages

Advantages: - High-speed operation - Wide operating voltage range - Compact TSSOP package - Easy integration into various electronic systems

Disadvantages: - Limited number of channels (8) - Not suitable for high-power applications

Working Principles

The 74LVQ245TTR is designed to shift digital signals between systems operating at different voltage levels. It utilizes a bidirectional buffer with automatic direction control. The DIR/ OE pin determines the direction of data flow, while the tri-state outputs allow multiple devices to share a common bus.

Detailed Application Field Plans

The 74LVQ245TTR IC finds applications in various fields where level shifting and bus transceiver functions are required. Some specific application areas include: - Microcontroller interfacing - Data communication systems - Industrial automation - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

• SN74LVC245A: Similar functionality, but operates at a higher voltage range (1.65V to 5.7V)
• 74HCT245: Compatible with TTL logic levels, but operates at a higher voltage range (4.5V to 5.5V)
• CD74HC245: Higher current drive capability, but operates at a higher voltage range (2V to 6V)

These alternative models provide similar level shifting and bus transceiver functions, but with slight variations in voltage range, logic family, and other specifications.

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