Encyclopedia Entry: 74V1T05STR

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: Single-bit, Non-inverting, Open Drain Output
• Package: SOT-23-5
• Essence: Voltage level shifting between two logic levels
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Logic Input Voltage Range (VIL): 0V to 0.8V
• Logic Input Voltage Range (VIH): 2V to VCC + 0.3V
• Output Voltage Range (VO): 0V to VCC
• Maximum Output Current (IO): ±25mA
• Propagation Delay (tPD): 4.5ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74V1T05STR IC has a total of 5 pins in the SOT-23 package: 1. Pin 1: GND (Ground) 2. Pin 2: A (Input) 3. Pin 3: B (Output) 4. Pin 4: VCC (Power Supply) 5. Pin 5: NC (No Connection)

Functional Features

• The 74V1T05STR is designed to shift logic levels from one voltage domain to another.
• It provides non-inverting voltage translation with an open-drain output.
• The device operates bidirectionally, allowing voltage level shifting in both directions.
• It can be used to interface between systems operating at different voltage levels.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - Non-inverting logic level shifting simplifies interfacing between different voltage domains. - Open-drain output enables easy connection to other devices. - Small SOT-23 package offers space-saving and flexibility in PCB design.

Disadvantages: - Limited maximum output current may restrict usage in high-current applications. - Propagation delay of 4.5ns may introduce timing issues in certain scenarios. - Lack of internal pull-up resistors may require additional components for specific applications.

Working Principles

The 74V1T05STR utilizes a combination of MOSFETs to achieve voltage level shifting. When the input voltage (A) is within the specified logic low range, the output (B) is pulled to ground through an open-drain NMOS transistor. Conversely, when the input voltage is within the logic high range, the output is left floating, allowing external pull-up resistors to determine the output voltage level.

Detailed Application Field Plans

The 74V1T05STR finds application in various scenarios where logic level translation is required. Some potential use cases include: 1. Interfacing between microcontrollers operating at different voltage levels. 2. Level shifting between digital sensors and microcontrollers. 3. Communication between different logic families (e.g., TTL and CMOS). 4. Voltage translation in battery-powered devices with varying voltage requirements.

Detailed and Complete Alternative Models

1. SN74LVC1T45DBVR - Single-Bit Dual-Supply Bus Transceiver
2. NC7SZ125P5X - Single-Bit Non-Inverting Buffer/Line Driver
3. TXS0101DCTR - Single-Bit Bidirectional Voltage-Level Translator

These alternative models offer similar functionality and can be considered as substitutes for the 74V1T05STR in various applications.

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