MC74VHCT139A_14 Datasheet, PDF (1/7 Pages) ON Semiconductor – Dual 2-to-4 Decoder/ Demultiplexer

MC74VHCT139A
Dual 2-to-4 Decoder/
Demultiplexer
The MC74VHCT139A is an advanced high speed CMOS 2−to−4
decoder/demultiplexer fabricated with silicon gate CMOS technology.
It achieves high speed operation similar to equivalent Bipolar
Schottky TTL devices while maintaining CMOS low power
dissipation.
When the device is enabled (E = low), it can be used for gating or as
a data input for demultiplexing operations. When the enable input is
held high, all four outputs are fixed high, independent of other inputs.
The internal circuit is composed of three stages, including a buffer
output which provides high noise immunity and stable output.
The device output is compatible with TTL−type input thresholds
and the output has a full 5.0 V CMOS level output swing. 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
3.0 V CMOS logic to 5.0 V CMOS logic, or from 1.8 V CMOS logic
to 3.0 V CMOS logic while operating at the high−voltage power
supply
The MC74VHCT139A input structure provides protection when
voltages up to 7.0 V are applied, regardless of the supply voltage. This
allows the MC74VHCT139A to be used to interface 5.0 V circuits to
3.0 V circuits. The output structures also provide protection when
V_CC = 0 V. These input and output structures help prevent device
destruction caused by supply voltage−input/output voltage mismatch,
battery backup, hot insertion, etc.
Features
• High Speed: t_PD = 5.0 ns (Typ) at V_CC = 5.0 V
• Low Power Dissipation: I_CC = 4 mΑ (Max) at T_A = 25°C
• TTL−Compatible Inputs: V_IL = 0.8 V; V_IH = 2.0 V
• Power Down Protection Provided on Inputs and Outputs
• Balanced Propagation Delays
• Designed for 2.0 V to 5.5 V Operating Range
• Low Noise: V_OLP = 0.8 V (Max)
• Pin and Function Compatible with Other Standard Logic Families
• Latchup Performance Exceeds 300 mA
• ESD Performance:
Human Body Model > 2000 V;
Machine Model > 200 V
• Chip Complexity: 100 FETs or 25 Equivalent Gates
• These Devices are Pb−Free and are RoHS Compliant
http://onsemi.com
MARKING
DIAGRAMS
16
SOIC−16
D SUFFIX
CASE 751B
VHCT139AG
AWLYWW
1
1
16
TSSOP−16
VHCT
DT SUFFIX
139A
CASE 948F
ALYWG
G
1
1
A
= Assembly Location
WL, L = Wafer Lot
Y
= Year
WW, W = Work Week
G or G = Pb−Free Package
(Note: Microdot may be in either location)
FUNCTION TABLE
Inputs
E A1 A0
H
XX
L
LL
L
LH
L
HL
L
HH
Outputs
Y0 Y1 Y2 Y3
H HH H
L HH H
H LH H
H HL H
H HH L
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
© Semiconductor Components Industries, LLC, 2014
1
October, 2014 − Rev. 6
Publication Order Number:
MC74VHCT139A/D