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ON Semiconductor - Analog Multiplexer/Demultiplexer

Numéro de référence MC74LVXT8051
Description Analog Multiplexer/Demultiplexer
Fabricant ON Semiconductor 
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MC74LVXT8051 fiche technique
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MC74LVXT8051
Analog Multiplexer /
Demultiplexer
High–Performance Silicon–Gate CMOS
The MC74LVXT8051 utilizes silicon–gate CMOS technology to
achieve fast propagation delays, low ON resistances, and low OFF
leakage currents. This analog multiplexer/demultiplexer controls
analog voltages that may vary across the complete power supply range
(from VCC to GND).
The LVXT8051 is similar in pinout to the high–speed HC4051A
and the metal–gate MC14051B. The Channel–Select inputs determine
which one of the Analog Inputs/Outputs is to be connected by means
of an analog switch to the Common Output/Input. When the Enable
pin is HIGH, all analog switches are turned off.
The Channel–Select and Enable inputs are compatible with
TTL–type input thresholds. The input protection circuitry on this
device allows overvoltage tolerance on the input, allowing the device
to be used as a logic–level translator from 3.0V CMOS logic to 5.0V
CMOS Logic or from 1.8V CMOS logic to 3.0V CMOS Logic while
operating at the higher–voltage power supply.
The MC74LVXT8051 input structure provides protection when voltages
up to 7V are applied, regardless of the supply voltage. This allows the
MC74LVXT8051 to be used to interface 5V circuits to 3V circuits.
This device has been designed so that the ON resistance (Ron) is more
linear over input voltage than Ron of metal–gate CMOS analog switches.
Fast Switching and Propagation Speeds
Low Crosstalk Between Switches
Diode Protection on All Inputs/Outputs
Analog Power Supply Range (VCC – GND) = 2.0 to 6.0 V
Digital (Control) Power Supply Range (VCC – GND) = 2.0 to 6.0 V
Improved Linearity and Lower ON Resistance Than Metal–Gate
Counterparts
Low Noise
In Compliance With the Requirements of JEDEC Standard No. 7A
LOGIC DIAGRAM
MC74LVXT8051
Single–Pole, 8–Position Plus Common Off
X0 13
X1 14
X2 15
ANALOG
INPUTS/
X3 12
OUTPUTS X4 1
X5 5
X6 2
X7 4
A 11
CHANNEL
SELECT
INPUTS
B 10
C9
ENABLE 6
MULTIPLEXER/
DEMULTIPLEXER
3
X
COMMON
OUTPUT/
INPUT
PIN 16 = VCC
PIN 8 = GND
http://onsemi.com
16–LEAD SOIC
D SUFFIX
CASE 751B
16–LEAD TSSOP
DT SUFFIX
CASE 948F
PIN CONNECTION AND
MARKING DIAGRAM (Top View)
VCC X2 X1 X0 X3 A B C
16 15 14 13 12 11 10 9
12345678
X4 X6 X X7 X5 Enable NC GND
For detailed package marking information, see the Marking
Diagram section on page 11 of this data sheet.
FUNCTION TABLE – MC74LVXT8051
Control Inputs
Enable
Select
CBA
ON Channels
L LLL
L LLH
L LHL
L LHH
L HLL
L HLH
L HHL
L HHH
H XXX
X0
X1
X2
X3
X4
X5
X6
X7
NONE
X = Don’t Care
ORDERING INFORMATION
Device
Package Shipping
MC74LVXT8051D
SOIC 48 Units/Rail
MC74LVXT8051DR2 SOIC 2500 Units/Reel
MC74LVXT8051DT TSSOP 96 Units/Rail
MC74LVXT8051DTR2 TSSOP 2500 Units/Reel
© Semiconductor Components Industries, LLC, 1999
March, 2000 – Rev. 2
DataSheet4 U .com
1
Publication Order Number:
MC74LVXT8051/D

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