CD74ACT244MG4

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CD74ACT244MG4 is a quad bus transceiver with 3-state outputs, hot insertion, and two configurable control pins, CC_OE andCC_INH. It is important to note that CC_OE is an active-low output enable; when its logic is low, the output pin is enabled to source and sinkcurrent, and when its logic is high, the output pin is put in a High-Impedance state. This means that when CC_OE is high and CC_INHis low, the output buffer sourced from the bus will be enabled. It can be useful for transmission of data from one bus to another and frombus to memory.The CD74ACT244MG4 is specifically designed to support digital logic bus systems that transfer data between microprocessor and memorydevices. The device has four independent non-inverting 3-state buffer drivers that provide high-current source and sink capabilityappropriate for driving both low power digital logic circuits and high power interfaces. Outputs are set low and high by the control signalsO1, O2, O3, and O4 which can toggle the buffers from the High-Impedance to the low or high output states. It is important to note that theO1, O2, O3, and O4 control signals must be driven low for the device to provide tri-state buffering.The device features four bidirectional buffers that offer full TTL compatibility. The bidirectional buffers are obtained by connecting theinput of the transceiver to its output buffer. This type of transceiver is mainly used in microprocessor and memory devices to transfer databetween each other instantly. The bidirectional nature of the transceiver is suitable for interconnected data lines and four buffer stagesproviding level conversion.Under normal operation, the data sourced from the bus is input into buffer B1, which is then transmitted to buffer B2 before being output bythe output buffer. Buffer B2 provides an additional capability to source data to the output buffers when O1, O2, O3, and O4 are low.Additionally, the device includes two configurable control pins, CC_OE and CC_INH. When CC_OE is low, the device is enabled to source andsink current from the outputs. When CC_OE is high, the outputs are put in a tristate, or High-Impedance state. CC_INH, when active low andCC_OE is low, enables the outputs to source from the buses.The CD74ACT244MG4 utilising 3-state outputs, hot insertion, and two configurable control pins, CC_OE and CC_INH can offer many benefitsfor customers who require level conversion and enhanced design configurations. The device is also useful in applications such as providingaddress and data bus management, enabling conversion between two bus systems and memory interfacing.In conclusion, the CD74ACT244MG4 is an excellent device for designers who need to implement level shifting in their applications. Thebidirectional buffers provide full TTL compatibility and are ideal for use in data transfer between microprocessor and memory devices,enabling level translation between two different buses. The device also features two configurable control pins, CC_OE and CC_INH, whichoffer additional flexibility when transferring data between two buses or to memory devices. With its 3-state output, hot insertion, and twoconfigurable control pins, the CD74ACT244MG4 is a cost-effective and versatile device.

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