MC74LCX258DT

Semiconductor Components Industries, LLC, 2005
January, 2005 − Rev. 4
1 Publication Order Number:
MC74LCX258/D
MC74LCX258
Low−Voltage CMOS Quad
2−Input Multiplexer
With 5 V−Tolerant Inputs and Outputs
(3−State, Inverting)
The MC74LCX258 is a high performance, quad 2−input inverting
multiplexer with 3−state outputs operating from a 2.3 to 3.6 V supply.
High impedance TTL compatible inputs significantly reduce current
loading to input drivers while TTL compatible outputs offer improved
switching noise performance. A V
I
specification of 5.5 V allows
MC74LCX258 inputs to be safely driven from 5 V devices.
Four bits of data from two sources can be selected using the Select
input. The four outputs present the selected data in the inverted form.
The outputs may be switched to a high impedance state by placing a
logic HIGH on the Output Enable (OE
) input. Current drive capability
is 24 mA at the outputs.
Features
Designed for 2.3 to 3.6 V V
CC
Operation
5 V Tolerant − Interface Capability With 5 V TTL Logic
Supports Live Insertion and Withdrawal
I
OFF
Specification Guarantees High Impedance When V
CC
= 0 V
TTL Compatible
CMOS Compatible
24 mA Balanced Output Sink and Source Capability
Near Zero Static Supply Current in all Three Logic States (10 A)
Substantially Reduces System Power Requirements
Latchup Performance Exceeds 500 mA
ESD Performance: Human Body Model >2000 V
Machine Model >200 V
Pb−Free Packages are Available*
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
MARKING
DIAGRAMS
A = Assembly Location
L, WL = Wafer Lot
Y = Year
W, WW = Work Week
SOIC−16
D SUFFIX
CASE 751B
LCX258
AWLYWW
LCX
258
ALYW
TSSOP−16
DT SUFFIX
CASE 948F
SOEIAJ−16
M SUFFIX
CASE 966
74LCX258
ALYW
16
1
16
16
1
1
16
1
16
1
16
1
See detailed ordering and shipping information in the package
dimensions section on page 4 of this data sheet.
ORDERING INFORMATION
http://onsemi.com
MC74LCX258
http://onsemi.com
2
Figure 1. Pinout: 16−Lead Plastic Package
(Top View)
1516 14 13 12 11 10
21 34567
V
CC
9
8
OE
A3 B3 Y3 A2 B2
Y2
S
A0
B0
Y0 A1
B1
Y1 GND
PIN NAMES
Pins Function
An Source 0 Data Inputs
Bn Source B Data Inputs
OE Enable Input
S Select Input
Yn Outputs
TRUTH TABLE
Inputs Outputs
Output Enable Select Y0−Y3
H X Z
L L A0−A3
L H B0−B3
X = Don’t Care
A0−A3, B0−B3 = The levels of the respective Data−Word Inputs
PIN DESCRIPTIONS
INPUTS
A0−A3 (Pins 2, 5, 11, 14)
Nibble A inputs. The data present on these pins is
transferred to the outputs when the Select input is at a low
level and the Output Enable input is at a low level. The data
is presented to the outputs in inverted form for the LCX258.
B0−B3 (Pins 3, 6, 10, 13)
Nibble B inputs. The data present on these pins is
transferred to the outputs when the Select input is at a high
level and the Output Enable input is at a low level. The data
is presented to the outputs in inverted form for the LCX258.
OUTPUTS
Y0−Y3 (Pins 4, 7, 9, 12)
Data outputs. The selected input nibble is presented at
these outputs when the Output Enable input is at a low level.
The data present on these pins is in its inverted form for the
LCX258. For the Output Enable input at a high level, the
outputs are at a high level for the LCX258.
Select (Pin 1)
Nibble select. This input determines the data word to be
transferred to the outputs. A low level on this input selects
the A inputs and a high level selects the B inputs.
CONTROL INPUTS
Output Enable (Pin 15)
Output Enable input. A low level on this input allows the
selected data to be presented at the outputs. A high level on
this input sets all of the outputs to 3−state off.
MC74LCX258
http://onsemi.com
3
Figure 2. Expanded Logic Diagram
2
A0
4
Y0
7
Y1
9
Y2
12
Y3
3
B0
5
A1
6
B1
11
A2
10
B2
14
A3
13
B3
15
Output
Enable
1
Select
Data
Output
s
Nibble
Inputs

MC74LCX258DT

Mfr. #:
Manufacturer:
ON Semiconductor
Description:
Encoders, Decoders, Multiplexers & Demultiplexers 2-3.6V CMOS Quad
Lifecycle:
New from this manufacturer.
Delivery:
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