hef4555b NXP Semiconductors, hef4555b Datasheet - Page 2

• Manufacturer Part Number: hef4555b
• Description: Dual 1-of-4 Decoder/demultiplexer
• Manufacturer: NXP Semiconductors

Philips Semiconductors
DESCRIPTION
The HEF4555B is a dual 1-of-4 decoder/demultiplexer.
Each has two address inputs (A
enable input (E) and four mutually exclusive outputs which
are active HIGH (O
E when HIGH, forces O
demultiplexer, the appropriate output is selected by the
information on A
unselected outputs are LOW.
January 1995
Dual 1-of-4 decoder/demultiplexer
Fig.1 Functional diagram.
0
and A
0
to O
0
1
3
to O
with E as data input. All
). When used as a decoder,
3
LOW. When used as a
0
and A
1
), an active LOW
2
PINNING
FAMILY DATA, I
See Family Specifications
HEF4555BP(N): 16-lead DIL; plastic
HEF4555BD(F): 16-lead DIL; ceramic (cerdip)
HEF4555BT(D): 16-lead SO; plastic
( ): Package Designator North America
E
A
O
0
0
and A
to O
3
1
enable inputs (active LOW)
address inputs
outputs (active HIGH)
DD
Fig.2 Pinning diagram.
LIMITS category MSI
(SOT38-1)
(SOT74)
(SOT109-1)
Product specification
HEF4555B
MSI