描述 Description

CD4028BMS types are BCD-to-decimal or binary-to-octal decoders consisting of buffering on all 4 inputs, decoding logic gates, and 10 output buffers. A BCD code applied to the four inputs, A to D, results in a high level at the selected one of 10 decimal decoded outputs. Similarly, a 3-bit binary code applied to inputs A through C is decoded in octal code at output 0 to 7 if D = “0”. High drive capability is provided at all outputs to enhance dc and dynamic performance in high fan-out applications.

特性 Features

? High Voltage Type (20V Rating)

? BCD-to-Decimal Decoding or Binary-to-Octal Decoding

? High Decoded Output Drive Capability

? “Positive Logic” Inputs and Outputs - Decoded Outputs Go High On Selection

? Medium-Speed Operation

??? - tPHL, tPLH = 80ns (typ) at VDD = 10V

? Standardized Symmetrical Output Characteristics

? 100 Tested For Quiescent Current at 20V

? Maximum Input Current of 1μA at 18V Over Full Package-Temperature Range;

??? - 100nA at 18V and +25oC

? Noise Margin (Over Full Package Temperature Range):

??? - 1V at VDD = 5V

??? - 2V at VDD = 10V

??? - 2.5V at VDD = 15V

? 5V, 10V and 15V Parametric Ratings

? Meets All Requirements of JEDEC Tentative Standard No. 13B, “Standard Specifications for Description of ‘B’ Series CMOS Devices”

Applications

? Code Conversion

? Indication-Tube Decoder

? Address Decoding - Memory Selection Control