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54ACT258
Quad 2-Input Multiplexer with TRI-STATE
廬
Outputs
General Description
The 鈥橝C/鈥橝CT258 is a quad 2-input multiplexer with
TRI-STATE outputs. Four bits of data from two sources can
be selected using a common data select input. The four out-
puts present the selected data in the complement (inverted)
form. The outputs may be switched to a high impedance
state with a HIGH on the common Output Enable (OE) input,
allowing the outputs to interface directly with bus-oriented
systems.
n
n
n
n
n
Multiplexer expansion by tying outputs together
Inverting TRI-STATE outputs
Outputs source/sink 24 mA
鈥橝CT258 has TTL-compatible inputs
Standard Military Drawing (SMD)
鈥?鈥橝CT258: 5962-88704
鈥?鈥橝C258: 5962-91604
Features
n
I
CC
and I
OZ
reduced by 50%
Logic Symbols
IEEE/IEC
DS100287-1
DS100287-2
Pin Names
S
OE
I
0a
鈥揑
0d
I
1a
鈥揑
1d
Z
a
鈥揨
d
Description
Common Data Select Input
TRI-STATE Output Enable Input
Data Inputs from Source 0
Data Inputs from Source 1
TRI-STATE Inverting Data Outputs
TRI-STATE
廬
is a registered trademark of National Semiconductor Corporation.
FACT
廬
is a registered trademark of Fairchild Semiconductor Corporation.
漏 1998 National Semiconductor Corporation
DS100287
www.national.com