鈥?/div>
54ACT253
Dual 4-Input Multiplexer with TRI-STATE
廬
Outputs
General Description
The 鈥橝C/鈥橝CT253 is a dual 4-input multiplexer with
TRI-STATE outputs. It can select two bits of data from four
sources using common select inputs. The outputs may be in-
dividually switched to a high impedance state with a HIGH
on the respective Output Enable (OE) inputs, allowing the
outputs to interface directly with bus oriented systems.
n
n
n
n
n
Multifunction capability
Noninverting TRI-STATE outputs
Outputs source/sink 24 mA
鈥橝CT253 has TTL-compatible inputs
Standard Military Drawing (SMD)
鈥?鈥橝C253: 5962-87693
鈥?鈥橝CT253: 5962-87761
Features
n
I
CC
and I
OZ
reduced by 50%
Logic Diagrams
IEEE/IEC
DS100285-1
DS100285-2
Pin Names
I
0a
鈥揑
3a
I
0b
鈥揑
3b
S
0
, S
1
OE
a
OE
b
Z
a
, Z
b
Description
Side A Data Inputs
Side B Data Inputs
Common Select Inputs
Side A Output Enable Input
Side B Output Enable Input
TRI-STATE 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
DS100285
www.national.com