SN74LVT245BDWRG4

Product Overview

• Category: Integrated Circuit
• Use: Level Shifter and Bus Transceiver
• Characteristics: Low Voltage, Bi-directional, 8-bit, Non-inverting
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Transfers data between different voltage levels in digital systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 3.6V
• High-Level Input Voltage: 2V to VCC + 0.5V
• Low-Level Input Voltage: -0.5V to 0.8V
• High-Level Output Voltage: 2.4V (min), VCC (max)
• Low-Level Output Voltage: 0.4V (max), 0.1V (min)
• Operating Temperature Range: -40°C to 85°C
• Propagation Delay Time: 3.9ns (typical)
• Output Drive Capability: ±12mA

Detailed Pin Configuration

The SN74LVT245BDWRG4 has a total of 20 pins. The pin configuration is as follows:

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

Functional Features

• Bi-directional data transfer between two voltage domains
• Non-inverting logic translation
• High-speed operation with low propagation delay
• Output drive capability for driving capacitive loads
• Output enable function for disabling the outputs

Advantages and Disadvantages

Advantages: - Supports level shifting between different voltage levels - Non-inverting logic translation preserves signal integrity - High-speed operation allows for efficient data transfer - Output drive capability enables driving of capacitive loads

Disadvantages: - Limited to a specific number of data lines (8-bit) - Requires careful consideration of voltage compatibility between systems

Working Principles

The SN74LVT245BDWRG4 is designed to facilitate the transfer of digital data between two voltage domains. It acts as a level shifter and bus transceiver, allowing communication between systems operating at different voltage levels. The device uses non-inverting logic translation, ensuring that the output signals maintain the same logical state as the input signals.

The direction of data flow is controlled by the DIR pin. When DIR is high, data is transferred from the A-side to the B-side, and when DIR is low, data is transferred in the opposite direction. The OE pin is used to enable or disable the outputs.

Detailed Application Field Plans

The SN74LVT245BDWRG4 is commonly used in various applications where level shifting and bus transceiver functions are required. Some of the typical application fields include:

1. Microcontroller interfacing with different voltage peripherals
2. Communication interfaces between systems operating at different voltage levels
3. Data transfer between memory modules and processors
4. Interface between FPGA (Field-Programmable Gate Array) and external devices

Detailed and Complete Alternative Models

1. SN74LVC245A: Similar functionality, but operates at a lower voltage range (1.65V to 3.6V)
2. SN74LVTH245A: Bi-directional level shifter with 3-state outputs
3. SN74AVC4T245: 4-bit level shifter with integrated voltage translation

These alternative models provide similar functionality to the SN74LVT245BDWRG4 but may have different specifications or package options.

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