Encyclopedia Entry: 74FCT388915TEJG

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic Level Translator
• Characteristics: High-speed, low-power consumption, voltage level shifting
• Package: TEJG (Thin Epoxy J-Bend Gullwing), a surface mount package
• Essence: This IC is designed to translate logic levels between different voltage domains.
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Logic Family: FCT (Fast CMOS TTL)
• Number of Channels: 8
• Input Voltage Range: 2.0V to 5.5V
• Output Voltage Range: 1.65V to 3.6V
• Propagation Delay: 2.5ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74FCT388915TEJG IC has the following pin configuration:

```

---

| | --| VCC | --| GND | --| A1 | --| B1 | --| OE1 | --| Y1 | --| A2 | --| B2 | --| OE2 | --| Y2 | --| ... | --| ... | --| A8 | --| B8 | --| OE8 | --| Y8 | |___________| ```

Functional Features

• Provides bidirectional voltage level translation between two voltage domains.
• Supports high-speed data transmission with minimal propagation delay.
• Low power consumption makes it suitable for battery-powered devices.
• Enables interfacing between different logic families with varying voltage requirements.
• Features individual output enable (OE) control for each channel, allowing selective translation.

Advantages and Disadvantages

Advantages: - High-speed operation facilitates efficient data transfer. - Low power consumption extends battery life in portable devices. - Wide input and output voltage ranges provide flexibility in various applications. - Individual OE control allows selective translation, reducing power consumption.

Disadvantages: - Limited to 8 channels, which may not be sufficient for complex systems requiring more translations. - Not suitable for high-voltage level shifting applications.

Working Principles

The 74FCT388915TEJG operates by utilizing a combination of CMOS and TTL technologies. It employs a voltage level shifting technique to translate logic signals between two different voltage domains. The IC consists of eight bidirectional channels, each capable of translating signals from one voltage domain to another. The OE control pin for each channel enables or disables the translation process selectively.

Detailed Application Field Plans

The 74FCT388915TEJG finds application in various fields where voltage level translation is required. Some potential application areas include:

1. Microcontrollers and Peripherals: Facilitates communication between microcontrollers operating at different voltage levels and their associated peripherals.
2. Communication Interfaces: Enables interfacing between different communication interfaces, such as UART, SPI, or I2C, with varying voltage requirements.
3. Battery-Powered Devices: Suitable for portable devices powered by batteries, where low power consumption is crucial.
4. Mixed Voltage Systems: Allows integration of components operating at different voltage levels within a single system.

Detailed and Complete Alternative Models

1. SN74LVC1T45DBVR: Single-channel voltage level translator with similar characteristics and package.
2. TXB0108PWR: Eight-channel bidirectional voltage level translator with a different package and wider voltage range.
3. PCA9306DCUR: Dual bidirectional I2C-bus and SMBus voltage level translator with additional features.

These alternative models offer similar functionality and can be considered as alternatives to the 74FCT388915TEJG based on specific requirements.

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