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74LVC139DPHILIPSN/a356avaiDual 2-to-4 line decoder/demultiplexer
74LVC139DBPHIN/a1737avaiDual 2-to-4 line decoder/demultiplexer


74LVC139DB ,Dual 2-to-4 line decoder/demultiplexerFEATURES DESCRIPTIONThe 74LVC139 is a low-voltage, low-power, high-performance• Wide supply voltage ..
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74LVC139D-74LVC139DB
Dual 2-to-4 line decoder/demultiplexer
Product specification
Supersedes data of 1997 Jun 19
IC24 Data Handbook
1998 Apr 28
Philips Semiconductors Product specification
74LVC139Dual 2-to-4 line decoder/demultiplexer
FEATURES
Wide supply voltage range of 1.2 to 3.6 V In accordance with JEDEC standard no. 8-1A Inputs accept voltages up to 5.5 V CMOS lower power consumption Direct interface with TTL levels Demultiplexing capability Two independent 2-to-4 decoders Multifunction capability Active LOW mutually exclusive outputs Output drive capability 50  transmission lines at 85°C
DESCRIPTION

The 74LVC139 is a low-voltage, low-power, high-performance
Si-gate CMOS device, superior to most advanced CMOS
compatible TTL families.
The 74LVC139 is a dual 2-to-4 line decoder/demultiplexer. This device
has two independent decoders, each accepting two binary weighted
inputs (nA0 and nA1) and providing four mutually exclusive active LOW
outputs (nY0 to nY3). Each decoder has an active LOW input (nE).
When nE is HIGH, every output is forced HIGH. The enable can be
used as the data input for a 1-to-4 demultiplexer application.
QUICK REFERENCE DATA

GND = 0 V; Tamb = 25°C; tr = tf ≤ 2.5 ns
NOTES:
CPD is used to determine the dynamic power dissipation (PD in μW)
PD = CPD × VCC2 × fi  (CL × VCC2 × fo) where:
fi = input frequency in MHz; CL = output load capacity in pF;
fo = output frequency in MHz; VCC = supply voltage in V;
 (CL × VCC 2 × fo) = sum of the outputs. The condition is V1 = GND to VCC
ORDERING INFORMATION
PIN CONFIGURATION
PIN DESCRIPTION
Philips Semiconductors Product specification
74LVC139Dual 2-to-4 line decoder/demultiplexer
LOGIC DIAGRAM
LOGIC SYMBOL (IEEE/IEC)
FUNCTIONAL DIAGRAM
FUNCTION TABLE
NOTES:
Philips Semiconductors Product specification
74LVC139Dual 2-to-4 line decoder/demultiplexer
RECOMMENDED OPERATING CONDITIONS
ABSOLUTE MAXIMUM RATINGS1

In accordance with the Absolute Maximum Rating System (IEC 134).
Voltages are referenced to GND (ground = 0V).
NOTES:
Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
Philips Semiconductors Product specification
74LVC139Dual 2-to-4 line decoder/demultiplexer
DC ELECTRICAL CHARACTERISTICS

Over recommended operating conditions. Voltages are referenced to GND (ground = 0V)
NOTE:
All typical values are at VCC = 3.3V and Tamb = 25°C.
AC CHARACTERISTICS

GND = 0 V; tr = tf � 2.5 ns; CL = 50 pF; RL = 500; Tamb = –40C to +85C
NOTE:
These typical values are at VCC = 3.3V and Tamb = 25°C.
Philips Semiconductors Product specification
74LVC139Dual 2-to-4 line decoder/demultiplexer
AC WAVEFORMS

VM = 1.5 V at VCC � 2.7 V
VM = 0.5 × VCC at VCC < 2.7 V
VOL and VOH are the typical output voltage drop that occur with the
output load.
Figure 1. Input (nA) to output (nY) propagation delays.
Figure 2. Enable input (nE) to output (nYn) propagation delays.
TEST CIRCUIT
Figure 3. Load circuitry for switching times.
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