FCT Interface Logic, Octal Bus Transceivers/ Registers, Open Drain (A Side), Three-State (B Side)

The CD74FCT653 and CD74FCT654 octal bus transceiv- ers Registers use a small geometry BiCMOS technology. The output stage is a combination of bipolar and CMOS Transistors that limits the output HIGH level to two Diode drops below VCC. This resultant lowering of output swing (0V to 3.7V) reduces power bus ringing (a source of EMI) and minimizes VCC bounce and ground bounce and their effects during simulta- neous output switching. The output configuration also enhances switching speed and is capable of sinking 64mA. The CD74FCT653 is an inverting type having open drains on the A output and three state outputs on the B side. The CD74FCT654 differs only in that it is a noninverting type. These devices consist of Bus Transceiver circuits, D-Type Flip-Flops and control circuitry arranged for multiplexed transmission of data directly from the data bus or from the internal storage Registers Output Enables OEAB and OEBA are provided to control the transceiver functions. SAB and SBA control pins are provided to select whether real-time or stored data is transferred. The cir- cuitry used for select control will eliminate the typical decoding glitch that occurs in a multiplexer during the transition between stored and real-time data. A LOW input level selects real-time data and a HIGH selects stored data. The following examples demonstrate the four fundamental bus management functions that CAN be performed with the octal Bus Transceivers and regis- ters. By Texas Instruments
CD74FCT653 's PackagesCD74FCT653 's pdf datasheet

CD74FCT653 Pinout, Pinouts
CD74FCT653 pinout,Pin out
This is one package pinout of CD74FCT653,If you need more pinouts please download CD74FCT653's pdf datasheet.

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