Encyclopedia Entry: 74LVTH162245MEA

Product Overview

Category

The 74LVTH162245MEA belongs to the category of integrated circuits (ICs) and specifically falls under the family of logic level shifters.

Use

This product is primarily used for voltage level shifting in digital systems. It enables the translation of signals between devices operating at different voltage levels, ensuring compatibility and seamless communication.

Characteristics

• Logic Family: Low Voltage TTL (LVTTL)
• Number of Channels: 16
• Input Voltage Range: 1.2V - 3.6V
• Output Voltage Range: 1.65V - 5.5V
• High-Speed Operation: Supports data rates up to 400 Mbps
• Low Power Consumption: Ideal for battery-powered applications
• ESD Protection: Provides robust protection against electrostatic discharge

Package and Quantity

The 74LVTH162245MEA is available in a standard surface mount package, such as the TSSOP (Thin Shrink Small Outline Package). It is typically supplied in reels or tubes, with a quantity of 250 or 3000 units per package.

Specifications

• Supply Voltage: 2.7V - 3.6V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 4.5 ns (max)
• Output Drive Capability: ±24 mA
• Input Capacitance: 3 pF (typ)
• Output Capacitance: 6 pF (typ)

Pin Configuration

The 74LVTH162245MEA features a 48-pin package with clearly defined pin functions. The pin configuration is as follows:

A1 ──────────────── B1 A2 ──────────────── B2 A3 ──────────────── B3 A4 ──────────────── B4 A5 ──────────────── B5 A6 ──────────────── B6 A7 ──────────────── B7 A8 ──────────────── B8 GND ──────────────── VCC OE ──────────────── DIR A9 ──────────────── B9 A10 ──────────────── B10 A11 ──────────────── B11 A12 ──────────────── B12 A13 ──────────────── B13 A14 ──────────────── B14 A15 ──────────────── B15

Functional Features

• Bidirectional Voltage Level Shifting: Allows bidirectional data transfer between devices operating at different voltage levels.
• Direction Control (DIR) Pin: Enables control over the direction of data flow.
• Output Enable (OE) Pin: Facilitates enabling or disabling the outputs, providing flexibility in system design.
• High-Speed Operation: Supports high-speed data transmission up to 400 Mbps.
• ESD Protection: Provides robust protection against electrostatic discharge, ensuring device reliability.

Advantages and Disadvantages

Advantages

• Wide Operating Voltage Range: Supports a broad range of input and output voltage levels.
• Bi-directional Capability: Enables seamless communication between devices with different voltage requirements.
• High-Speed Performance: Suitable for applications requiring fast data transfer.
• Low Power Consumption: Ideal for battery-powered devices, minimizing energy consumption.

Disadvantages

• Limited Channel Count: The 74LVTH162245MEA offers 16 channels, which may not be sufficient for applications requiring a higher number of channels.
• Propagation Delay: The device introduces a small propagation delay, which may impact timing-sensitive applications.

Working Principles

The 74LVTH162245MEA utilizes a combination of MOSFETs and other circuitry to achieve voltage level shifting. It employs a bidirectional architecture that allows data to flow in both directions, controlled by the DIR pin. The OE pin enables the user to enable or disable the outputs as needed. By translating signals between different voltage domains, the IC ensures seamless communication between devices operating at varying voltage levels.

Application Field Plans

The 74LVTH162245MEA finds application in various fields, including:

1. Microcontroller Interfacing: Facilitates communication between microcontrollers operating at different voltage levels.
2. Sensor Networks: Enables voltage level translation between sensors and microcontrollers in IoT applications.
3. Display Systems: Supports voltage conversion between display driver ICs and display modules.
4. Memory Interfaces: Allows compatibility between memory modules and controllers with different voltage requirements.