HEF4514BTD Ver la hoja de datos (PDF) - Philips Electronics
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HEF4514BTD Datasheet PDF : 6 Pages
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Philips Semiconductors
1-of-16 decoder/demultiplexer with input latches
Product specification
HEF4514B
MSI
DESCRIPTION
The HEF4514B is a 1-of-16 decoder/demultiplexer, having
four binary weighted address inputs (A0 to A3), a latch
enable input (EL), and an active LOW enable input (E).
The 16 outputs (O0 to O15) are mutually exclusive active
HIGH. When EL is HIGH, the selected output is
determined by the data on An. When EL goes LOW, the
last data present at An are stored in the latches and the
outputs remain stable. When E is LOW, the selected
output, determined by the contents of the latch, is HIGH.
At E HIGH, all outputs are LOW. The enable input (E) does
not affect the state of the latch. When the HEF4514B is
used as a demultiplexer, E is the data input and A0 to
A3 are the address inputs.
Fig.1 Functional diagram.
Fig.2 Pinning diagram.
PINNING
A0 to A3
E
EL
O0 to O15
address inputs
enable input (active LOW)
latch enable input
outputs (active HIGH)
HEF4514BP(N): 24-lead DIL; plastic
(SOT101-1)
HEF4514BD(F): 24-lead DIL; ceramic (cerdip)
(SOT94)
HEF4514BT(D): 24-lead SO; plastic
(SOT137-1)
( ): Package Designator North America
APPLICATION INFORMATION
Some examples of applications for the HEF4514B are:
• Digital multiplexing.
• Address decoding.
• Hexadecimal/BCD decoding.
FAMILY DATA, IDD LIMITS category MSI
See Family Specifications
January 1995
2
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