SN74LVCH8T245NSR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-speed, low-voltage, 8-bit bidirectional transceiver
• Package: 20-pin small-outline integrated circuit (SOIC)
• Essence: Transfers data between two different voltage domains
• Packaging/Quantity: Tape and reel packaging, 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
• Maximum Data Rate: 400 Mbps
• Number of Channels: 8
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LVCH8T245NSR has a total of 20 pins, which are as follows:

1. OE (Output Enable) - Active Low Output Enable
2. A1 - Channel 1 Control Input
3. B1 - Channel 2 Control Input
4. A2 - Channel 3 Control Input
5. B2 - Channel 4 Control Input
6. A3 - Channel 5 Control Input
7. B3 - Channel 6 Control Input
8. A4 - Channel 7 Control Input
9. B4 - Channel 8 Control Input
10. GND (Ground) - Ground Reference
11. B5 - Channel 8 Data I/O
12. A5 - Channel 7 Data I/O
13. B6 - Channel 6 Data I/O
14. A6 - Channel 5 Data I/O
15. B7 - Channel 4 Data I/O
16. A7 - Channel 3 Data I/O
17. B8 - Channel 2 Data I/O
18. A8 - Channel 1 Data I/O
19. VCC - Positive Power Supply
20. DIR (Direction Control) - Direction Control Input

Functional Features

• Bidirectional voltage level shifting between two voltage domains
• Supports translation between different logic levels (e.g., 3.3V to 1.8V)
• Allows bidirectional data transfer between buses with different voltage levels
• Provides automatic direction control based on the DIR input signal
• Enables high-speed data transmission up to 400 Mbps

Advantages and Disadvantages

Advantages

• Wide supply voltage range allows compatibility with various systems
• High-speed operation facilitates efficient data transfer
• Bidirectional functionality simplifies system design
• Automatic direction control reduces external circuitry requirements

Disadvantages

• Limited number of channels (8) may not be sufficient for complex systems
• Requires careful consideration of voltage compatibility to avoid damage

Working Principles

The SN74LVCH8T245NSR operates by receiving data from one bus and transmitting it to another bus, while also performing voltage level shifting. The direction of data flow is controlled by the DIR input signal. When DIR is low, data is transmitted from Bus A to Bus B, and when DIR is high, data is transmitted from Bus B to Bus A. The OE input signal enables or disables the output drivers.

Detailed Application Field Plans

The SN74LVCH8T245NSR finds applications in various fields where voltage level shifting and bidirectional data transfer are required. Some specific application areas include:

1. Communication Systems: Used for interfacing between different voltage domains in communication devices such as routers, switches, and modems.
2. Industrial Automation: Facilitates data exchange between different voltage-level industrial control systems, ensuring seamless communication.
3. Automotive Electronics: Enables communication between different voltage domains in automotive systems, such as CAN bus interfaces and infotainment systems.
4. Consumer Electronics: Used in devices like smartphones, tablets, and gaming consoles to interface between different logic levels and voltage domains.

Detailed and Complete Alternative Models

1. SN74LVC8T245PW: Similar 8-bit bidirectional transceiver with a different package (TSSOP) and wider supply voltage range (1.2V to 3.6V).
2. SN74LVCH16T245DGGR: 16-bit bidirectional transceiver with a higher number of channels and wider supply voltage range (1.65V to 5.5V).
3. SN74AVC8T245PWR: 8-bit bidirectional transceiver with a lower supply voltage range (1.1V to 3.6V) and smaller package (TSSOP).

These alternative models offer similar functionality but may have variations in specifications, package types, and supply voltage ranges. The choice of the alternative model depends on specific application requirements and constraints.

Word count: 554 words