CD74AC245SM96E4

Product Overview

• Category: Integrated Circuit
• Use: Signal Level Shifter
• Characteristics: High-Speed, Bi-Directional, Octal Bus Transceiver
• Package: Surface Mount, 96-Ball BGA
• Essence: Efficient signal level shifting and bus transceiving capabilities
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to VCC + 0.5V
• Low-Level Input Voltage: -0.5V to 0.8V
• High-Level Output Voltage: VCC - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Operating Frequency: 125 MHz
• Propagation Delay Time: 7 ns (max)
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The CD74AC245SM96E4 has a total of 48 pins. The pin configuration is as follows:

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

...

Functional Features

• Bi-directional data flow: Allows data transmission in both directions.
• Output enable control: Enables or disables the outputs.
• Direction control: Determines the direction of data flow.
• High-speed operation: Supports high-frequency applications up to 125 MHz.
• Wide supply voltage range: Operates from 2V to 6V, providing flexibility in various systems.

Advantages and Disadvantages

Advantages: - Efficient signal level shifting between different voltage domains. - Bi-directional capability simplifies bus transceiving. - High-speed operation allows for fast data transfer. - Wide supply voltage range accommodates diverse system requirements.

Disadvantages: - Limited maximum operating frequency compared to some other models. - Surface mount package may require specialized equipment for assembly.

Working Principles

The CD74AC245SM96E4 is designed to shift the logic levels of signals between different voltage domains. It acts as a bidirectional buffer, allowing data transmission in both directions. The direction of data flow is controlled by the DIR pin. When enabled, the inputs are transmitted to the outputs in one direction, and when disabled, the outputs are in a high-impedance state.

The device operates by utilizing internal circuitry that converts the input logic levels to the desired output levels based on the supply voltage. This enables seamless communication between devices operating at different voltage levels within a system.

Detailed Application Field Plans

The CD74AC245SM96E4 finds applications in various fields where signal level shifting and bus transceiving are required. Some specific application areas include:

1. Microcontroller interfacing: The IC facilitates communication between microcontrollers operating at different voltage levels, enabling seamless integration into a system.
2. Data communication systems: It is used in data transmission systems to ensure compatibility between devices with varying voltage requirements.
3. Industrial automation: The IC enables efficient signal level shifting in industrial automation applications, allowing for reliable communication between different components.
4. Automotive electronics: It finds use in automotive electronics for level translation between various subsystems, ensuring proper functioning of the overall system.

Detailed and Complete Alternative Models

1. SN74LV245A: Low-Voltage Octal Bus Transceiver
2. CD74HCT245E: High-Speed CMOS Logic Level Shifter
3. MC74VHC245DW: Octal Bus Transceiver with 3-State Outputs
4. SN74LVC245APW: Low-Voltage CMOS Bus Transceiver

These alternative models offer similar functionality to the CD74AC245SM96E4 and can be considered as alternatives based on specific system requirements.

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