CD74AC245M96

Product Overview

• Category: Integrated Circuit (IC)
• Use: Signal level shifting and voltage translation
• Characteristics: High-speed, low-power, bidirectional bus transceiver
• Package: 20-pin SOIC (Small Outline Integrated Circuit)
• Essence: Transfers data between two bidirectional buses with different voltage levels
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Supply Voltage: 2V to 6V
• Input Voltage Levels: VIL = 0.8V, VIH = 2V
• Output Voltage Levels: VOL = 0.1V, VOH = VCC - 0.1V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 5ns (typical)
• Output Drive Capability: ±24mA

Detailed Pin Configuration

The CD74AC245M96 IC has a total of 20 pins. The pin configuration is as follows:

1. OE (Output Enable) - Active Low Output Enable
2. A1 - Input/Output Port A Bit 1
3. A2 - Input/Output Port A Bit 2
4. A3 - Input/Output Port A Bit 3
5. A4 - Input/Output Port A Bit 4
6. A5 - Input/Output Port A Bit 5
7. GND - Ground
8. B1 - Input/Output Port B Bit 1
9. B2 - Input/Output Port B Bit 2
10. B3 - Input/Output Port B Bit 3
11. B4 - Input/Output Port B Bit 4
12. B5 - Input/Output Port B Bit 5
13. VCC - Supply Voltage
14. DIR (Direction) - Direction Control Input
15. NC (No Connection)
16. B6 - Input/Output Port B Bit 6
17. B7 - Input/Output Port B Bit 7
18. B8 - Input/Output Port B Bit 8
19. A6 - Input/Output Port A Bit 6
20. A7 - Input/Output Port A Bit 7

Functional Features

• Bidirectional data transfer between two buses with different voltage levels
• Automatic direction control based on the DIR input signal
• Output enable/disable control using the OE input signal
• High-speed operation with low power consumption
• Schmitt-trigger inputs for noise immunity

Advantages and Disadvantages

Advantages: - Efficient voltage level shifting between buses - Fast propagation delay for quick data transfer - Low power consumption for energy efficiency - Noise immunity due to Schmitt-trigger inputs

Disadvantages: - Limited number of bidirectional ports (8 in total) - Requires external control signals for direction and output enable/disable

Working Principles

The CD74AC245M96 is a bidirectional bus transceiver that allows data transfer between two buses operating at different voltage levels. The direction of data flow is controlled by the DIR input signal, while the OE input signal enables or disables the output. When the DIR input is high, data flows from Port A to Port B, and when it is low, data flows from Port B to Port A.

The IC uses Schmitt-trigger inputs to provide noise immunity, ensuring reliable data transfer even in noisy environments. It operates at high speeds with low power consumption, making it suitable for various applications requiring voltage translation.

Detailed Application Field Plans

The CD74AC245M96 is commonly used in applications where there is a need to interface between two buses operating at different voltage levels. Some of the specific application fields include:

1. Microcontroller interfacing with external devices
2. Level shifting in communication systems
3. Data transfer between different logic families
4. Industrial automation and control systems
5. Automotive electronics

Detailed and Complete Alternative Models

1. SN74LVC245A: Low-voltage CMOS Octal Bus Transceiver
2. MC74VHC245: High-Speed CMOS Octal Bus Transceiver
3. CD74HCT245: High-Speed CMOS Logic Octal Bus Transceiver
4. 74ACT245: Advanced CMOS Octal Bus Transceiver

These alternative models offer similar functionality and can be used as substitutes for the CD74AC245M96 depending on specific requirements and availability.

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