74F410

www.DataSheet4U.com Philips Semiconductors FAST Products Product specification Register stack – 16×4 RAM 3-State output register 74F410 FEATURES Edge triggered output register ypical access time of 19.5ns Optimize for register stack operation 3–state outputs 18–pin package DESCRIPTION The 74F410 is a register oriented high speed 64–bit read/write memory organized as 16–words by 4–bits. An edge–triggered 4–bit output register allows new input data to be written while previous data is held. 3–state outputs are provided for maximum versatility. The 74F410 is fully compatible with all TTL families. TYPICAL SUPPLY CURRENT ( TOTAL) 45mA while WE, CS, and CP are low, the contents of the selected memory location follow these changes provided setup and hold time criteria are met. Read operation – When CS is low, WE is high, and CP goes from low–to–high, the contents of the memory location selected by the address inputs (A0–A3) are edge– triggered into the output register. When WE is low, CS is low, CP goes from low–to–high, the data at the data inputs is edge–triggered into the output register. The OE input controls the output buffers. When OE is high the four outputs (Q0–Q3) are in a high impedance or off state; when OE is low, the outputs are determined by the state of the output register. TYPE 74F410 TYPICAL ACCESS TIME 19.5ns FUNCTIONAL DESCRIPTION Write operation – When the three control inputs, write enable (WE), chip select (CS), and clock (CP), are low the...