74AC11240NT

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Being a 8-bit buffer, the 74AC11240NT is a true 1-of-8 buffer/driver designed for low voltage (4.5V to 5.5V) VCC applications. This device can be applied in DSP, FPGA live migration, interface to ARM processor, logic level translators and interfaces to 7/14 stage advance latches.

The 74AC11240NTlatches data from the address pins A0 to A7, on application of the enabling logic inputs G1 and G2. When the address is latched, the corresponding outputs are enabled. A HIGH output indicates the address being applied at the inputs. The device can be used for 1-of-8 functions both in an inverting and a non-inverting output mode. Outputs are enabled in the high impedance state when G1 and G2 are LOW.

The device is characterized for operation from -40°C to 85°C, when VCC is applied between 4.5V to 5.5V. The output current is also defined at +/-24mA. It is designed with a 6 μs delay time after the enabling inputs are applied. The output is 2.5V to 3.7V.

The 74AC11240NT is made up of 8 separate gates which are this device’s primitive logic block, each one equipped with an active-low enable input so that data can be selectively enabled. When G1 and G2 are both low, all the output will be in the high impedance state and not drive their associated output logic. This ensures that the corresponding logic is not disturbed on the system’s input until the appropriate enable signal has been applied. The enable inputs also serve to prevent unused ports from propagating unwanted signals.

The working principle of the 74AC11240NT can be explained in simple terms, by considering the eight-bit buffer as a multiplexer. The selection of the required bit is done using the address pins, i.e the A0 to A7 pins. After the address pins are set and the enable logic applied, the corresponding output data is enabled on the outputs Y0 to Y7 and latched until a new address is selected. The outputs are discussed in detail in the Electrical Characteristics section. The device can effectively drive both CMOS and TTL loads.

In summary, the 74AC11240NT buffer is a true 1-of-8 buffer/driver designed for low voltage applications and provides an ideal answer for managing low-speed logic interface on advanced microprocessors and FPGAs. This device features 8 active-low enable inputs and a high-impedance structure to reduce any glitches, allowing only the desired bit to be enabled. With a delay of 6μsec after the enabling inputs are applied, it is perfect for applications where speed is required.

The specific data is subject to PDF, and the above content is for reference