74AHC245PW,118

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level shifting and signal buffering
• Characteristics: High-speed, low-power, bidirectional voltage level translator
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Translates signals between different voltage levels
• Packaging/Quantity: Tape and reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Input Voltage Range: -0.5 V to VCC + 0.5 V
• Output Voltage Range: -0.5 V to VCC + 0.5 V
• High-Level Input Voltage: 0.7 x VCC to VCC + 0.5 V
• Low-Level Input Voltage: -0.5 V to 0.3 x VCC
• High-Level Output Voltage: VCC - 0.5 V
• Low-Level Output Voltage: 0.5 V
• Maximum Operating Frequency: 80 MHz

Pin Configuration

The 74AHC245PW,118 IC has a total of 20 pins arranged in a TSSOP package. The pin configuration is as follows:

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

Functional Features

• Bidirectional voltage level translation between two different voltage domains
• High-speed operation with minimal propagation delay
• Low power consumption
• Schmitt-trigger action on all inputs for improved noise immunity
• 3-state outputs for easy interfacing with other devices
• ESD protection on all inputs and outputs

Advantages and Disadvantages

Advantages: - Allows seamless communication between devices operating at different voltage levels - Fast and efficient signal translation - Low power consumption - Enhanced noise immunity due to Schmitt-trigger inputs - ESD protection for improved reliability

Disadvantages: - Limited maximum operating frequency compared to some alternative models - TSSOP package may require careful handling during assembly

Working Principles

The 74AHC245PW,118 is a bidirectional voltage level translator that enables communication between devices operating at different voltage levels. It uses a combination of CMOS technology and Schmitt-trigger inputs to achieve high-speed operation and improved noise immunity.

The direction of data flow is controlled by the DIR pin, while the OE pin enables or disables the outputs. When the DIR pin is set to logic high, data is translated from the A-side to the B-side. Conversely, when the DIR pin is set to logic low, data is translated from the B-side to the A-side.

The IC features 3-state outputs, which allow multiple devices to share a common bus without interference. This feature is particularly useful in applications where multiple devices need to communicate with each other.

Detailed Application Field Plans

The 74AHC245PW,118 is commonly used in various applications, including:

1. Microcontroller interfacing: It facilitates communication between microcontrollers operating at different voltage levels, enabling seamless integration of different components in a system.
2. Level shifting: It is used to shift logic levels between different parts of a circuit, ensuring compatibility and reliable signal transmission.
3. Bus buffering: It acts as a buffer between different sections of a bus, preventing signal degradation and ensuring accurate data transfer.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74AHC245PW,118 include:

1. SN74LVC245A: Low-voltage CMOS octal bus transceiver with 3-state outputs
2. CD4508B: CMOS dual 4-bit latch/4-to-8 line decoder with 3-state outputs
3. MC74VHC245: High-speed CMOS octal bus transceiver with 3-state outputs

These alternative models provide comparable features and can be considered based on specific application requirements.

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