CY74FCT821BTPC

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics:
  • High-speed operation
  • Low power consumption
  • Wide voltage range compatibility
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Logic level translation between different voltage domains
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.0V to 5.5V
• Input Voltage Range (A Port): 0V to VCC_A
• Input Voltage Range (B Port): 0V to VCC_B
• Output Voltage Range (Y Port): 0V to VCC_Y
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 3.5ns (typical)
• Maximum Quiescent Current: 10µA

Detailed Pin Configuration

The CY74FCT821BTPC has a total of 20 pins. The pin configuration is as follows:

1. A0
2. A1
3. A2
4. A3
5. A4
6. A5
7. GND
8. B0
9. B1
10. B2
11. B3
12. B4
13. B5
14. VCC_B
15. Y0
16. Y1
17. Y2
18. Y3
19. Y4
20. Y5

Functional Features

• Bidirectional voltage level translation between two independent voltage domains
• Supports voltage translation from 2.0V to 5.5V
• Provides seamless interface between devices operating at different voltage levels
• High-speed operation allows for efficient data transfer
• Low power consumption ensures energy efficiency

Advantages and Disadvantages

Advantages

• Wide voltage range compatibility enables versatile usage scenarios
• High-speed operation facilitates fast data transmission
• Low power consumption contributes to energy-efficient designs
• Compact TSSOP package allows for space-saving integration

Disadvantages

• Limited number of translation channels (6 in total)
• Not suitable for applications requiring translation between more than two voltage domains
• Propagation delay may affect timing-sensitive applications

Working Principles

The CY74FCT821BTPC utilizes a combination of MOSFETs and CMOS technology to achieve logic level translation. It operates by detecting the input voltage levels on the A and B ports and translating them to the corresponding voltage levels on the Y port. The device ensures bidirectional translation, allowing seamless communication between devices operating at different voltage domains.

Detailed Application Field Plans

The CY74FCT821BTPC is commonly used in various electronic systems where voltage level translation is required. Some specific application fields include:

1. Microcontroller interfacing with peripheral devices operating at different voltage levels
2. Communication interfaces between different logic families (e.g., TTL and CMOS)
3. Level shifting in battery-powered devices to accommodate varying voltage requirements
4. Signal conditioning in mixed-signal systems to bridge analog and digital domains

Detailed and Complete Alternative Models

1. SN74LVC4245APWR - Octal Bus Transceiver with Voltage-Level Shifting
2. TXS0108EPWR - 8-Bit Bidirectional Voltage-Level Translator
3. PCA9306DCUR - Dual Bidirectional I2C-Bus and SMBus Voltage-Level Translator

These alternative models offer similar functionality and can be considered as substitutes for the CY74FCT821BTPC in various applications.

In conclusion, the CY74FCT821BTPC is a high-speed logic level translator IC that enables seamless voltage translation between different domains. Its wide voltage range compatibility, low power consumption, and compact package make it suitable for various electronic systems. However, its limited number of channels and propagation delay should be considered in specific applications. Alternative models such as SN74LVC4245APWR, TXS0108EPWR, and PCA9306DCUR provide similar functionality and can be used as substitutes when necessary.