HEF4512B Ver la hoja de datos (PDF) - Philips Electronics
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HEF4512B Datasheet PDF : 7 Pages
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Philips Semiconductors
8-input multiplexer with 3-state output
Product specification
HEF4512B
MSI
DESCRIPTION
The HEF4512B is an 8-input multiplexer with 8 binary
inputs (I0 to I7), an enable input (E) and an output enable
input (EO). One of eight binary inputs is selected by select
inputs S0, S1 and S2, and is routed to the output O. A HIGH
on EO causes O to assume a high impedance OFF-state,
regardless of other input conditions. This allows the output
to interface directly with bus oriented systems (3-state).
When the active LOW enable (E) is HIGH, it forces the
output LOW provided EO is LOW. By proper manipulation
of the inputs, the device can provide any logic functions of
four variables. It cannot be used to multiplex analogue
signals.
Fig.1 Functional diagram.
PINNING
S0, S1, S2
EO
E
I0 to I7
O
select inputs
output enable (active LOW)
enable (active LOW)
multiplexer inputs
multiplexer output
FAMILY DATA, IDD LIMITS category MSI
See Family Specifications
Fig.2 Pinning diagram.
HEF4512BP(N): 16-lead DIL; plastic
(SOT38-1)
HEF4512BD(F): 16-lead DIL; ceramic (cerdip)
(SOT74)
HEF4512BT(D): 16-lead SO; plastic
(SOT109-1)
( ): Package Designator North America
January 1995
2
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