MC74VHT4051 Datasheet, PDF (1/12 Pages) Motorola, Inc – Analog Multiplexer Demultiplexer

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
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by MC74VHCT4051/D
Advance Information
Analog Multiplexer/
Demultiplexer
MC74VHCT4051
High–Performance Silicon–Gate CMOS
The MC74VHCT4051 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 VHCT4051 is identical 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 MC74VHCT4051 input structure provides protection when voltages
up to 7V are applied, regardless of the supply voltage. This allows the
MC74VHCT4051 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.
For a multiplexer/demultiplexer with channel–select latches, see
VHC4351.
D SUFFIX
16–LEAD SOIC PACKAGE
CASE 751B–05
DT SUFFIX
16–LEAD TSSOP PACKAGE
CASE 948F–01
ORDERING INFORMATION
MC74VHCTXXXXD SOIC
MC74VHCTXXXXDT TSSOP
• 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
MC74VHCT4051
Single–Pole, 8–Position Plus Common Off
FUNCTION TABLE – MC74VHCT4051
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 = Don’t Care
X0 ¹³
X1 ¹⁴
ANALOG
INPUTS/
OUTPUTS
X2 ¹⁵
X3 ¹²
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
Pinout: MC74VHCT4051 (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
This document contains information on a new product. Specifications and information herein are subject to
change without notice.
10/98
© Motorola, Inc. 1998
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