SN74HCT645PWT

Product Overview

Category

SN74HCT645PWT belongs to the category of integrated circuits (ICs).

Use

It is commonly used as a bidirectional octal bus transceiver.

Characteristics

• High-speed CMOS technology
• 8-bit wide bidirectional bus interface
• Voltage-level translation between 5V and 3.3V systems
• Non-inverting outputs for easy cascading
• Schmitt-trigger inputs for noise immunity
• Low power consumption
• Wide operating temperature range

Package

SN74HCT645PWT is available in a TSSOP (Thin Shrink Small Outline Package) package.

Essence

The essence of SN74HCT645PWT lies in its ability to facilitate bidirectional communication between two buses with different voltage levels.

Packaging/Quantity

SN74HCT645PWT is typically packaged in reels, with 2500 units per reel.

Specifications

• Supply Voltage: 2V to 6V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Input Capacitance: 3.5pF
• Output Capacitance: 6pF
• Propagation Delay Time: 10ns

Detailed Pin Configuration

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

Functional Features

• Bidirectional data transfer between two buses
• Voltage-level translation for compatibility between different systems
• Output enable control for easy interfacing with other devices
• Schmitt-trigger inputs for improved noise immunity
• Non-inverting outputs for cascading multiple transceivers

Advantages and Disadvantages

Advantages

• High-speed operation
• Wide operating temperature range
• Low power consumption
• Noise-immune design
• Easy cascading of multiple transceivers

Disadvantages

• Limited voltage range (2V to 6V)
• TSSOP package may require careful handling during assembly

Working Principles

SN74HCT645PWT works by receiving data from one bus and transmitting it to the other bus bidirectionally. The direction of data flow is controlled by the DIR pin. The voltage-level translation feature allows seamless communication between systems operating at different voltage levels.

Detailed Application Field Plans

SN74HCT645PWT finds applications in various fields, including: 1. Microcontroller interfacing 2. Data communication systems 3. Industrial automation 4. Automotive electronics 5. Consumer electronics

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to SN74HCT645PWT are: 1. SN74LVC245A 2. CD74HC245E 3. MC74HCT245AN 4. 74ACT245

These models offer similar functionality and can be used as replacements based on specific requirements.

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