SN74AXC1T45DCKR

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SN74AXC1T45DCKR

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Especificações

Atributo Valor
Supplier Texas Instruments
Package / Case Tape & Reel (TR),Cut Tape (CT)
Series 74AXC
Part Status Active
Translator Type Voltage Level
Channel Type Bidirectional
Number of Circuits 1
Channelsper Circuit 1
Voltage - VCCA 0.65 V ~ 3.6 V
Voltage - VCCB 0.65 V ~ 3.6 V
Output Type Tri-State, Non-Inverted
Data Rate 500Mbps
Operating Temperature -40°C ~ 125°C (TA)
Mounting Type Surface Mount

Visão Geral

Description

SN74AXC1T45DCKR is TI’s 1‑bit, auto‑bidirectional voltage‑level translator. It shifts a single data line between two voltage domains (A = VCCA, B = VCCB) with no external direction pin. The device automatically senses the data direction and drives the line to the appropriate level in either direction, making it ideal for bridging mixed‑voltage MCUs, sensors, and peripherals. Typical operating ranges are defined by VCCA and VCCB in the datasheet (covering common low‑ and higher‑voltage rails). Key features include auto‑direction sensing, 3‑state I/O when a rail is off, and low on‑resistance with fast edges. The DCKR suffix indicates the compact package variant. Applications: level shifting for I2C/SPI/UART and general GPIO bridging between devices running different supply voltages. For exact electrical characteristics and pinout, refer to the SN74AXC1T45DCKR datasheet.

Equivalent

Direct equivalents (1-bit bidirectional level shifter with auto-direction):
- Nexperia 74AXC1T45
- ON Semiconductor NC7WZC1T45
Similar-function alternatives:
- 74LVC1T45 (1-bit bidirectional level shifter) from various vendors
Note: Check voltage ranges (VCCA/VCCB) and pinout in the cross-reference for exact compatibility.

Pinout

- Pin count: 8 pins (8-pin package, e.g., DCKR).
- Function: 1-bit bidirectional voltage-level translator with auto-direction sensing between two supply domains (VCCA and VCCB). Translates a single data line between the A and B sides without a direction pin.

Manufacturer

Manufacturer: Texas Instruments (TI).
Type of company: Texas Instruments is an American multinational semiconductor company that designs and manufactures analog and mixed-signal ICs, digital logic, and embedded processing devices. Headquartered in Dallas, Texas, TI is one of the world’s largest chipmakers.

Application

- 1-bit bidirectional voltage-level translator for mixed-supply systems
- Bridges signals between devices operating at different rails (VCCA vs VCCB)
- Interfaces microcontrollers/FPGA/DSP with sensors, memories, or other peripherals
- Suitable for portable, consumer, automotive, and industrial electronics with multiple voltage domains
- Useful in prototyping and test rigs to avoid extra control pins or resistor networks
- Ideal for simple, low-pin-count level shifting in digital interconnects (not for high-speed memory interfaces)

Package

SN74AXC1T45DCKR comes in an 8-pin VSSOP (Very Small Outline Package) designated by the package code DCK; the trailing R indicates Tape‑and‑Reel.

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