74LCX16245TTR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: High-speed, low-voltage, bidirectional level shifting
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: This IC is designed to shift logic levels between different voltage domains in digital systems.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Number of Channels: 16
• Logic Voltage Levels: 1.65V - 3.6V
• Data Rate: Up to 400 Mbps
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 2.3V - 3.6V
• Input/Output Compatibility: 5V tolerant

Pin Configuration

The 74LCX16245TTR has a total of 48 pins arranged as follows:

A1 1 ────────────────────── 48 VCCB B1 Y1 2 47 B2 A2 Y2 3 46 GND B3 Y3 4 45 A3 A4 Y4 5 44 B4 B5 Y5 6 43 A5 A6 Y6 7 42 B6 B7 Y7 8 41 A7 A8 Y8 9 40 B8 B9 Y9 10 39 A9 A10 Y10 11 38 B10 B11 Y11 12 37 A11 A12 Y12 13 36 B12 B13 Y13 14 35 A13 A14 Y14 15 34 B14 B15 Y15 16 33 A15 A16 Y16 17 32 B16 OE1 GND 18 31 VCCA OE2 NC 19 30 GND DIR NC 20 29 OE2 GND NC 21 28 DIR VCCB NC 22 27 OE1 B1 NC 23 26 A1 A2 NC 24 25 B2

Functional Features

• Bidirectional level shifting: Allows for translation between different voltage domains.
• High-speed operation: Supports data rates up to 400 Mbps.
• Low-voltage operation: Compatible with low-voltage digital systems.
• 5V tolerant inputs/outputs: Can interface with 5V logic devices.

Advantages and Disadvantages

Advantages: - High-speed performance enables efficient data transfer. - Bidirectional capability simplifies interfacing between different voltage levels. - Low-voltage operation reduces power consumption.

Disadvantages: - Limited to a specific number of channels (16 in this case). - Requires careful consideration of voltage compatibility to avoid damage.

Working Principles

The 74LCX16245TTR operates by receiving input signals from one voltage domain and translating them to the corresponding voltage levels of another domain. It achieves bidirectional level shifting by utilizing a combination of MOSFETs and CMOS logic circuitry. The inputs and outputs are protected against voltage spikes and noise to ensure reliable operation.

Application Field Plans

The 74LCX16245TTR is commonly used in various digital systems where logic level translation is required. Some potential application fields include:

1. Microcontrollers: Facilitates communication between microcontrollers operating at different voltage levels.
2. Communication Interfaces: Enables interfacing between devices with different logic voltage requirements, such as UART, SPI, or I2C interfaces.
3. Memory Systems: Allows for data transfer between memory modules operating at different voltage domains.

Alternative Models

• SN74LVC16245A: Similar bidirectional level shifter with 16 channels, compatible with 3.3V and 5V logic levels.
• MC74LVX245: Octal bus transceiver with similar functionality, compatible with 2.0V - 5.5V logic levels.

These alternative models offer comparable features and can be considered as substitutes for the 74LCX16245TTR depending on specific requirements.

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