SN74AHCT126QPWREP

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics:
  • High-speed CMOS technology
  • Quad bus buffer gate with 3-state outputs
  • Voltage level shifting capability
  • Wide operating voltage range
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Logic level shifting and buffering
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 6 ns (typical)
• Output Drive Capability: ±24 mA

Detailed Pin Configuration

The SN74AHCT126QPWREP has a total of 14 pins, which are numbered as follows:

1. 1A
2. 1Y
3. GND
4. 2A
5. 2Y
6. 3A
7. 3Y
8. VCC
9. 4A
10. 4Y
11. OE
12. NC (No Connection)
13. NC (No Connection)
14. GND

Functional Features

• Quad bus buffer gate with 3-state outputs
• Provides voltage level shifting between different logic levels
• Allows bidirectional data flow
• Enables/disables output using the OE (Output Enable) pin
• High-speed operation suitable for various applications

Advantages and Disadvantages

Advantages: - High-speed CMOS technology ensures fast operation - Wide operating voltage range allows compatibility with different systems - 3-state outputs provide flexibility in controlling data flow - Small package size (TSSOP) saves board space

Disadvantages: - Limited output drive capability may not be suitable for high-current applications - Requires careful consideration of voltage compatibility with other components

Working Principles

The SN74AHCT126QPWREP is a logic level shifter that allows bidirectional voltage translation between different logic levels. It consists of four buffer gates, each with a 3-state output. The input voltage can be at a lower or higher level than the supply voltage, and the IC will shift the voltage accordingly to match the desired logic level.

The OE (Output Enable) pin controls the output state. When OE is low, the outputs are enabled and reflect the input data. When OE is high, the outputs are disabled and enter a high-impedance state.

Detailed Application Field Plans

The SN74AHCT126QPWREP is commonly used in various digital systems where voltage level shifting is required. Some typical application fields include:

1. Microcontroller interfacing: It enables communication between microcontrollers operating at different voltage levels.
2. Sensor interfaces: It facilitates connection between sensors and microcontrollers with different logic levels.
3. Communication systems: It helps in voltage translation between different communication protocols, such as UART, SPI, or I2C.
4. Industrial automation: It assists in connecting devices with varying voltage requirements in industrial control systems.

Detailed and Complete Alternative Models

1. SN74LVC1T45DBVR: Single-bit dual-supply bus transceiver with configurable voltage translation.
2. SN74AVC4T245PW: Quad-bit dual-supply bus transceiver with configurable voltage translation.
3. SN74LVCH8T245PWR: Octal-bit dual-supply bus transceiver with configurable voltage translation.

These alternative models offer similar functionality and voltage level shifting capabilities, but may have different package options or additional features.

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