CY74FCT245DTQCT

Overview

Category: Integrated Circuit (IC)

Use: Level Shifter/Transceiver

Characteristics: - Bidirectional data transfer - 8-bit parallel bus interface - Voltage level shifting capability - High-speed operation - Low power consumption

Package: TSSOP-20

Essence: The CY74FCT245DTQCT is a high-performance, octal bidirectional level shifter/transceiver IC. It provides voltage level shifting between two different logic levels, allowing seamless communication between devices operating at different voltage levels.

Packaging/Quantity: The CY74FCT245DTQCT is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Logic Voltage Levels: 3.3V and 5V
• Input/Output Compatibility: TTL, CMOS
• Maximum Data Rate: 250 MHz
• Propagation Delay: 2.5 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The CY74FCT245DTQCT has a total of 20 pins, which are assigned specific functions as follows:

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

Functional Features

• Bidirectional data transfer: The CY74FCT245DTQCT allows data to be transferred bidirectionally between two systems or devices.
• Voltage level shifting: It provides voltage level shifting capability, allowing seamless communication between devices operating at different logic voltage levels.
• High-speed operation: With a maximum data rate of 250 MHz, the IC enables fast data transfer.
• Low power consumption: The CY74FCT245DTQCT is designed to minimize power consumption, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Enables communication between devices with different voltage levels - Fast data transfer speed - Low power consumption - Compact package size

Disadvantages: - Limited to 8-bit parallel bus interface - Requires careful consideration of input/output compatibility

Working Principles

The CY74FCT245DTQCT operates by receiving data from one system or device and transmitting it to another bidirectionally. It incorporates voltage level shifting circuitry that ensures compatibility between different logic voltage levels. The direction of data flow is controlled by the DIR pin, while the OE* pin enables or disables the output.

Detailed Application Field Plans

The CY74FCT245DTQCT is widely used in various applications where voltage level shifting and bidirectional data transfer are required. Some common application fields include:

1. Microcontroller interfacing: The IC facilitates communication between microcontrollers operating at different logic voltage levels.
2. Sensor networks: It enables seamless data exchange between sensors and microcontrollers with varying voltage requirements.
3. Industrial automation: The CY74FCT245DTQCT is utilized in industrial control systems to interface between different voltage domains.
4. Communication systems: It plays a crucial role in connecting devices with different logic voltage levels in communication networks.

Detailed and Complete Alternative Models

1. SN74LVC245A: This octal bus transceiver IC offers similar functionality to the CY74FCT245DTQCT, with compatibility for 3.3V and 5V logic voltage levels.
2. MC74LVX245: Another alternative, this IC provides bidirectional level shifting capabilities and supports TTL and CMOS logic voltage levels.
3. CD74HCT245: This high-speed CM