54FCT574 Datasheet | National Semiconductor

Description The ’FCT574 is an octal flip-flop with a buffered mon Clock (CP) and a buffered mon Output Enable (OE). The information presented to the D inputs is stored in the flip-flops on the LOW-to-HIGH Clock (CP) transition. The device is functionally identical to the ’FCT374 except for the pinouts. Features n Inputs and outputs on opposite sides of package allowing easy interface with microprocessors n Useful as input or output port for microprocessors n Functionally identical to ’FCT374 n TRI-STATE outputs for bus-oriented applications n Output sink capability of 32 m A, source capability of 12 m A n TTL input and output level patible n CMOS power consumption n Standard Microcircuit Drawing (SMD) 5962-8951301 Ordering Code Military 54FCT574DMQB 54FCT574FMQB 54FCT574LMQB Package Number J20A W20A E20A Connection Diagrams Pin Assignment for DIP and Flatpak Package Description 20-Lead Ceramic Dual-In-Line 20-Lead Cerpack 20-Lead Ceramic Leadless Chip Carrier, Type C Pin Descriptions Pin Names D0- D7 CP O0- O7 Description Data Inputs Clock Pulse Input (Active Rising Edge) TRI-STATE Output Enable Input (Active LOW) TRI-STATE Outputs DS100966-1 Pin Assignment for LCC DS100966-2 TRI-STATE® is a registered trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS100966 .national. Functional Description The ’FCT574 consists of eight edge-triggered flip-flops with individual D-type inputs and TRI-STATE true outputs. The buffered clock and buffered Output Enable are mon to all flip-flops. The eight flip-flops will store the state of their individual D inputs that meet the setup and hold times requirements on the LOW-to-HIGH Clock (CP) transition. With the Output Enable (OE) LOW, the contents of the eight flip-flops are available at the outputs. When OE is HIGH, the outputs are in a high impedance state. Operation of the OE input does not affect the state of the flip-flops. Function Table Inputs OE CP H H or...