CD74HCT245M96

Overview

• Category: Integrated Circuit
• Use: Signal Level Shifter
• Characteristics: High-Speed, CMOS Logic, 8-Bit Bidirectional Transceiver
• Package: SOIC-20
• Essence: Transfers data between different voltage levels in digital systems
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• High-Level Input Voltage: 2V to VCC
• Low-Level Input Voltage: 0V to 0.8V
• High-Level Output Voltage: 2.4V (min), VCC (max)
• Low-Level Output Voltage: 0.4V (max)
• Maximum Propagation Delay: 16 ns
• Maximum Operating Frequency: 25 MHz

Pin Configuration

The CD74HCT245M96 has a total of 20 pins. The pin configuration is as follows:

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

Functional Features

• Bidirectional data transfer between two voltage domains
• High-speed operation with CMOS logic compatibility
• Output enable control for tri-state outputs
• Wide supply voltage range for compatibility with various systems
• 3-state outputs allow multiple devices to share a common bus

Advantages and Disadvantages

Advantages: - Fast data transfer speeds - Compatibility with CMOS logic - Wide supply voltage range - Tri-state outputs for bus sharing

Disadvantages: - Limited maximum operating frequency compared to some other ICs - Not suitable for applications requiring very high-speed data transfer

Working Principles

The CD74HCT245M96 is an 8-bit bidirectional transceiver that allows for the transfer of data between two voltage domains in digital systems. It operates using CMOS logic, which provides high-speed performance and compatibility with other CMOS devices.

The direction of data transfer is controlled by the DIR pin. When DIR is set to a logic high level, data is transferred from the A-side to the B-side. Conversely, when DIR is set to a logic low level, data is transferred from the B-side to the A-side.

The OE pin controls the output enable function. When OE is set to a logic low level, the outputs are enabled and data can be transmitted. When OE is set to a logic high level, the outputs are disabled and the device enters a high-impedance state.

Detailed Application Field Plans

The CD74HCT245M96 is commonly used in various digital systems where there is a need to interface between different voltage levels. Some of the application fields include:

1. Microcontroller interfacing with external devices
2. Level shifting in communication systems
3. Data transfer between different logic families
4. Bus buffering and isolation

Detailed and Complete Alternative Models

1. SN74HCT245N - DIP-20 package, similar specifications
2. MC74HCT245DW - SOIC-20 package, wider supply voltage range
3. CD74HC245E - PDIP-20 package, lower propagation delay

These alternative models offer similar functionality to the CD74HCT245M96 but may have differences in package type, supply voltage range, or other specifications.

In conclusion, the CD74HCT245M96 is a high-speed CMOS logic 8-bit bidirectional transceiver used for signal level shifting in digital systems. It offers compatibility with various voltage levels, fast data transfer speeds, and tri-state outputs for bus sharing. While it has some limitations in terms of maximum operating frequency, it is widely used in microcontroller interfacing, communication systems, and other applications requiring voltage level conversion.