Product Overview

Product Overview
MC74VHCT139A: Dual 2-to-4 Decoder/Demultiplexer
For complete documentation, see the data sheet
Product Description
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 while maintaining CMOS low power
dissipation.
When the device is enabled (Ebar = 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 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 V are applied, regardless of the supply voltage. This
allows the MC74VHCT139A to be used to interface 5 V circuits to 3 V circuits. The output structures also provide protection when
VCC = 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
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High Speed: tPD = 5.0ns (Typ) at VCC = 5V
Low Power Dissipation: ICC = 4<FONT FACE=SYMBOL>m</FONT>A (Max) at TA = 25°C
TTL-Compatible Inputs: VIL = 0.8 V; VIH = 2.0 V
Power Down Protection Provided on Inputs and Outputs
Balanced Propagation Delays
Designed for 2V to 5.5V Operating Range
Low Noise: VOLP = 0.8 V (Max)
Pin and Function Compatible with Other Standard Logic Families
Latchup Performance Exceeds 300mA
ESD Performance: HBM > 2000V; Machine Model > 200V
For more features, see the data sheet
Part Electrical Specifications
Product
MC74VHCT139ADG
Compliance
Status
Channels
VCC Min (V)
VCC Max (V)
tpd Max (ns)
IO Max (mA)
Package Type
Pb-free
Active
2
4.5
5.5
9.2
8
SOIC-16
Active
2
4.5
5.5
9.2
8
SOIC-16
Active
2
4.5
5.5
9.2
8
TSSOP-16
Active
2
4.5
5.5
9.2
8
TSSOP-16
Halide free
MC74VHCT139ADR2
G
Pb-free
MC74VHCT139ADTG
Pb-free
Halide free
Halide free
MC74VHCT139ADTR
G
Pb-free
Halide free
For more information please contact your local sales support at www.onsemi.com
Created on: 6/30/2016