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HEF4555BD-HEF4555BP-HEF4555BT
Dual 1-of-4 decoder/demultiplexer
Philips Semiconductors Product specification
Dual 1-of-4 decoder/demultiplexer HEF4555B
MSI
DESCRIPTIONThe HEF4555B is a dual 1-of-4 decoder/demultiplexer.
Each has two address inputs (A0 and A1), an active LOW
enable input (E) and four mutually exclusive outputs which
are active HIGH (O0 to O3). When used as a decoder, when HIGH, forces O0 to O3 LOW. When used as a
demultiplexer, the appropriate output is selected by the
information on A0 and A1 withE as data input. All
unselected outputs are LOW.
PINNING
FAMILY DATA, IDD LIMITS category MSISee Family Specifications
HEF4555BP(N): 16-lead DIL; plastic
(SOT38-1)
HEF4555BD(F): 16-lead DIL; ceramic (cerdip)
(SOT74)
HEF4555BT(D): 16-lead SO; plastic
(SOT109-1) ): Package Designator North America enable inputs (active LOW) and A1 address inputs to O3 outputs (active HIGH)
Philips Semiconductors Product specification
Dual 1-of-4 decoder/demultiplexer HEF4555B
MSI
TRUTH TABLE
Notes H= HIGH state (the more positive voltage)L= LOW state (the less positive voltage) X= state is immaterial
Philips Semiconductors Product specification
Dual 1-of-4 decoder/demultiplexer HEF4555B
MSI
AC CHARACTERISTICSVSS= 0 V; Tamb =25 °C; CL= 50 pF; input transition times≤ 20 ns
APPLICATION INFORMATIONSome examples of applications for the HEF4555B are: Code conversion. Address decoding. Demultiplexing: when using the enable input as data input.
:
www.ic-phoenix.com
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