74HC245PW,112

Product Overview

• Category: Integrated Circuit
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-speed CMOS technology, 8-bit bidirectional transceiver, voltage level shifting capability
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Transceiver IC for bidirectional data transfer between different voltage domains
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2.0V to 6.0V
• Input Voltage Range: GND to VCC
• Output Voltage Range: GND to VCC
• High-Level Input Voltage: 0.7 x VCC to VCC
• Low-Level Input Voltage: GND to 0.3 x VCC
• High-Level Output Voltage: VCC - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Operating Frequency: 80 MHz

Detailed Pin Configuration

The 74HC245PW,112 has a total of 20 pins. The pin configuration is as follows:

1. OE (Output Enable) - Output Enable Input
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
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 different voltage domains
• High-speed operation with CMOS technology
• 3-state outputs for bus-oriented applications
• Voltage level shifting capability for interfacing systems with different voltage levels
• Output enable control for disabling the outputs when not in use

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - Bidirectional functionality simplifies communication between different voltage domains - Voltage level shifting capability enables compatibility between systems with varying voltage levels - 3-state outputs provide flexibility in bus-oriented applications

Disadvantages: - Limited maximum operating frequency of 80 MHz - Requires careful consideration of input and output voltage ranges to prevent damage or incorrect operation

Working Principles

The 74HC245PW,112 is a bidirectional transceiver IC that facilitates the transfer of data between two different voltage domains. It operates using high-speed CMOS technology, allowing for efficient data transmission. The IC features 3-state outputs, which are useful in bus-oriented applications where multiple devices share a common bus.

The direction of data flow is controlled by the DIR (Direction Control) pin. When the DIR pin is set to a logic high, data is transferred from the A-side inputs to the B-side outputs. Conversely, when the DIR pin is set to a logic low, data is transferred from the B-side inputs to the A-side outputs.

The OE (Output Enable) pin is used to enable or disable the outputs. When the OE pin is set to a logic high, the outputs are enabled and actively drive the bus. When the OE pin is set to a logic low, the outputs are disabled and enter a high-impedance state.

Detailed Application Field Plans

The 74HC245PW,112 is commonly used in various applications that require bidirectional data transfer between different voltage domains. Some of the typical application fields include:

1. Microcontroller interfacing: The IC can be used to interface microcontrollers operating at different voltage levels, allowing for seamless communication between them.
2. Level shifting: It can be employed to shift voltage levels between different components or subsystems within an electronic system.
3. Bus transceiver: The IC is suitable for use as a bus transceiver in systems where multiple devices need to share a common bus.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74HC245PW,112 include:

1. SN74LVC245A: This is a similar octal bus transceiver with 3-state outputs, compatible with a wide range of voltage levels.
2. CD74HCT245: Another octal bus transceiver with 3-state outputs, offering compatibility with TTL logic levels