74LVCH245AT20-13

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter/Transceiver
• Characteristics: High-speed, low-voltage, octal bus transceiver with 3-state outputs
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: This IC is designed to shift the logic levels between two different voltage domains, allowing communication between devices operating at different voltage levels.
• Packaging/Quantity: Available in reels or tubes, typically sold in quantities of 250 or 3000 units.

Specifications

• Supply Voltage Range: 1.2V to 3.6V
• Input Voltage Range: -0.5V to VCC + 0.5V
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 200 MHz
• Number of Channels: 8
• Output Drive Capability: ±24 mA
• Propagation Delay: 2.4 ns (typical)

Detailed Pin Configuration

The 74LVCH245AT20-13 has a total of 20 pins, which are assigned as follows:

1. OE (Output Enable) - Output control pin
2. A1 - Data input/output pin
3. B1 - Data input/output pin
4. A2 - Data input/output pin
5. B2 - Data input/output pin
6. A3 - Data input/output pin
7. B3 - Data input/output pin
8. A4 - Data input/output pin
9. B4 - Data input/output pin
10. GND (Ground) - Ground reference
11. B5 - Data input/output pin
12. A5 - Data input/output pin
13. B6 - Data input/output pin
14. A6 - Data input/output pin
15. B7 - Data input/output pin
16. A7 - Data input/output pin
17. B8 - Data input/output pin
18. A8 - Data input/output pin
19. VCC - Power supply voltage
20. DIR (Direction) - Direction control pin

Functional Features

• Bidirectional level shifting between two voltage domains
• 3-state outputs for bus sharing
• High-speed operation suitable for fast data transfer
• Low-voltage operation for compatibility with modern low-power devices
• ESD protection on all inputs and outputs

Advantages and Disadvantages

Advantages: - Allows communication between devices operating at different voltage levels - High-speed operation enables efficient data transfer - 3-state outputs facilitate bus sharing - ESD protection ensures reliability

Disadvantages: - Limited to a maximum operating frequency of 200 MHz - Requires careful consideration of voltage compatibility between devices

Working Principles

The 74LVCH245AT20-13 is a bidirectional level shifter/transceiver that operates by converting logic levels between two voltage domains. It features 3-state outputs, allowing multiple devices to share a common bus. The IC is designed to operate at high speeds while consuming low power. It provides ESD protection on all inputs and outputs, ensuring reliable operation in various environments.

Detailed Application Field Plans

The 74LVCH245AT20-13 is commonly used in applications where there is a need to interface devices operating at different voltage levels. Some typical application fields include: - Communication systems - Industrial automation - Consumer electronics - Automotive electronics - Medical devices

Detailed and Complete Alternative Models

• SN74LVC245A: Similar octal bus transceiver with 3-state outputs, offered by Texas Instruments.
• MC74LVX245: Octal bus transceiver with 3-state outputs, provided by ON Semiconductor.
• 74HCT245: Octal bus transceiver with 3-state outputs, available from various manufacturers.

(Note: This is not an exhaustive list of alternative models. Please refer to the respective manufacturers' catalogs for a complete list.)

Word count: 496 words