CD40208BMS - Intersil Corporation

CD40208BMS CMOS 4 x 4 Multiport Register

The CD40208BMS is a 4 x 4 multiport register containing four 4-bit registers, write address decoder, two separate read address decoders, and two 3-state output buses. When the ENABLE input is low, the corresponding output bus is switched, independently of the clock, to a high impedance state. The high impedance third state provides the outputs with the capab.

Features

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• High Voltage Types (20V Rating) One Input and Two Output Buses Unlimited Expansion in Bit and Word Directions Data Lines have Latched Inputs 3-State Outputs Separate Control of Each Bus, Allowing Simultaneous Independent Reading of any of Four Registers on Bus A and Bus B and Independent Writing Into any of the Four Registers 100% Tested for Quiescent Current at 20V Standardized, Symmetrical Output Characteristics 5V, 10V and 15V Parametric Ratings Maximum Input Current of 1µA at 18V Over Full Package-Temperature Range; 100nA at 18V and +25oC Noise Margin (Full Package-Temperature .