SN74AHC540DBR

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SN74AHC540DBR is a logic device manufactured by Texas Instruments, which falls into the Logic product category. This part is a 3-state octal buffer/line driver with an open-collector output designed for applications with 2.7V to 5.5V VCC. The part is available in 5 pin SOT563 package and 7 pin SOT23-6 package.

An important part of a logic buffer/driver is the output stage, which is responsible for driving signals onto a transmission line. The SN74AHC540DBR includes two open-collector outputs (pins 11 and 12) that are configuration-independent with outputs in the high-impedance states when no active outputs are present. This means that each output can be driven high or low as needed and the output impedance can be adjusted to match the characteristics of the transmission line.

The SN74AHC540DBR is designed primarily for bus-oriented applications offering improved power dissipation over conventional devices. This part has a high-output drive capability of 15mA minimum and 38mA maximum per output. The special design techniques have been used to minimize power dissipation for increased efficiency.

SN74AHC540DBR has a wide variety of applications, including data transmission, clock/signal routing, logic level shifting, line drivers and register buffering. It is used in systems requiring a fast rise time, such as computer systems, telecommunications, audio/video, clocking and control circuits.

The SN74AHC540DBR operates on the logic of three-state buffers. When two or more buffers are connected together, they are capable of forming a full three-state bus. That is, they can be configured to drive, receive, or enable transmission over a bus line. In the enable mode, the bus line will take on the desired logic state. A buffer network, like the SN74AHC540DBR, is used to disable the bus so that data can be transmitted/received. When in the enable mode, the output of the buffer is in a high-impedance state, allowing for transmission/reception.

The SN74AHC540DBR uses a special 3-state logic, unlike the traditional logic. This allows for multiple pins to be driven in unison and the state of the outputs is programmable to either in the disabled or enabled state. This part also utilizes open-collector outputs with internal and design limits set to guarantee high-output drive capability. Additionally, this part has a low-dissipation CMOS design, which minimizes power without sacrificing performance.

The SN74AHC540DBR is suitable for a wide range of applications, from low voltage high current signal and signal routing, to data transmission and low power level shifting. The part features improved power dissipation and offers high-output drive capability, which makes it suitable for many types of logic signal and data transmission. Its operating voltage ranges from 2.7V to 5.5V, and its output drive capability is rated up to 15mA minimum, and 38mA maximum per output.

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