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MC74LVXT8051 Datasheet, PDF (1/12 Pages) ON Semiconductor – Analog Multiplexer/Demultiplexer | |||
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MC74LVXT8051
Analog Multiplexer /
Demultiplexer
HighâPerformance SiliconâGate CMOS
The MC74LVXT8051 utilizes siliconâgate 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 highâspeed HC4051A
and the metalâgate MC14051B. The ChannelâSelect 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 ChannelâSelect and Enable inputs are compatible with
TTLâtype input thresholds. The input protection circuitry on this
device allows overvoltage tolerance on the input, allowing the device
to be used as a logicâlevel 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 higherâvoltage 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 metalâgate CMOS analog switches.
⢠Fast Switching and Propagation Speeds
⢠Low Crosstalk Between Switches
⢠Diode Protection on All Inputs/Outputs
⢠Analog Power Supply Range (VCC â GND) = 2.0 to 6.0 V
⢠Digital (Control) Power Supply Range (VCC â GND) = 2.0 to 6.0 V
⢠Improved Linearity and Lower ON Resistance Than MetalâGate
Counterparts
⢠Low Noise
⢠In Compliance With the Requirements of JEDEC Standard No. 7A
LOGIC DIAGRAM
MC74LVXT8051
SingleâPole, 8âPosition 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
B 10
INPUTS C 9
ENABLE 6
MULTIPLEXER/
DEMULTIPLEXER
3
X
COMMON
OUTPUT/
INPUT
PIN 16 = VCC
PIN 8 = GND
http://onsemi.com
16âLEAD SOIC
D SUFFIX
CASE 751B
16âLEAD 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 â MC74LVXT8051
Control Inputs
Enable
Select
CBA
ON Channels
L
LLL
L
L LH
L
LHL
L
L HH
L
HL L
L
HLH
L
HH L
L
HHH
H
XXX
X0
X1
X2
X3
X4
X5
X6
X7
NONE
X = Donât 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
1
March, 2000 â Rev. 2
Publication Order Number:
MC74LVXT8051/D
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