SN74ALVCHR162245DL

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifting and Bus Transceiver
• Characteristics: High-speed, Low-voltage, 16-bit, Non-inverting, 3.3V to 5V Logic Level Translation
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Bi-directional voltage level shifting between different logic levels
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Logic Family: ALVC (Advanced Low-Voltage CMOS)
• Number of Bits: 16
• Input Voltage Range: 0V to 5.5V
• Output Voltage Range: 0V to 5.5V
• Supply Voltage Range: 2.3V to 3.6V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 4.8ns (Max)
• Output Drive Strength: ±24mA
• ESD Protection: >2000V (Human Body Model)

Detailed Pin Configuration

The SN74ALVCHR162245DL has a total of 48 pins, which are divided into two groups: A-side and B-side. Each side consists of 24 pins.

A-side Pins:

1. OEAB (Output Enable AB)
2. A1-A16 (Data Inputs/Outputs)
3. VCCA (Voltage Supply for Side A)
4. GND (Ground)

B-side Pins:

1. OEBB (Output Enable BB)
2. B1-B16 (Data Inputs/Outputs)
3. VCCB (Voltage Supply for Side B)
4. GND (Ground)

Functional Features

• Bi-directional voltage level translation between two different logic levels
• Non-inverting buffer for bidirectional data flow
• High-speed operation with minimal propagation delay
• Supports voltage translation from 3.3V to 5V logic levels
• Provides ESD protection for robustness

Advantages and Disadvantages

Advantages:

• Allows seamless interfacing between different logic families
• Supports high-speed data transmission
• Provides reliable voltage level shifting
• Offers ESD protection for enhanced durability
• Compact TSSOP package for space-constrained applications

Disadvantages:

• Limited to 16-bit data width
• Requires external pull-up or pull-down resistors for bus hold functionality

Working Principles

The SN74ALVCHR162245DL is designed to facilitate the translation of digital signals between two different logic voltage levels. It operates by receiving data inputs from one side (A-side) and transmitting them to the other side (B-side), or vice versa. The direction of data flow is controlled by the Output Enable pins (OEAB and OEBB). When the OE pin is low, the device is enabled, allowing bidirectional data transfer. Conversely, when the OE pin is high, the device is disabled, effectively isolating the input and output sides.

The IC utilizes a non-inverting buffer architecture, ensuring that the logic state of the input signal is preserved during translation. This feature enables seamless communication between devices operating at different voltage levels while maintaining signal integrity.

Detailed Application Field Plans

The SN74ALVCHR162245DL finds applications in various fields where voltage level translation is required. Some of the common application areas include:

1. Microcontroller Interfacing: Facilitating communication between microcontrollers operating at different logic levels.
2. Memory Interfaces: Enabling data transfer between memory modules with varying voltage requirements.
3. Industrial Automation: Supporting interface compatibility between different control systems and sensors.
4. Communication Systems: Bridging the gap between devices using different logic voltage standards, such as UART, SPI, or I2C.
5. Automotive Electronics: Enabling communication between components with varying voltage levels in automotive systems.

Detailed and Complete Alternative Models

1. SN74ALVC164245DL: 16-bit bi-directional level shifter with 3.3V to 5V translation capability.
2. SN74LVC16245ADGGR: 16-bit non-inverting bus transceiver with 2.5V to 5.5V voltage translation range.
3. SN74AVC4T774PW: Quad 4-bit voltage level translator with 1.2V to 3.6V translation capability.
4. SN74LVCH16245ADLR: 16-bit low-voltage CMOS bus transceiver with 1.65V to 3.6V voltage translation range.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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