Dual 2-to-4 line decoder/demultiplexer
Description
INTEGRATED CIRCUITS
74LVC139 Dual 2-to-4 line decoder/demultiplexer
Product specification Supersedes data of 1997 Jun 19 IC24 Data Handbook 1998 Apr 28
Philips Semiconductors
Philips Semiconductors
Product specification
Dual 2-to-4 line decoder/demultiplexer
74LVC139
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 W transmission lines at 85°C
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25°C; tr = tf ≤ 2.
5 ns SYMBOL tPHL/tPLH CI CPD PARAMETER Propagation delay nA to nYn, nE to nYn, Input capacitance Power dissipation capacitance per multiplexer
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.
CONDITIONS CL = 50 pF; VCC = 3.
3 V
TYPICAL 3.
3 3.
2 5.
0
UNIT ns pF pF
VCC = 3.
3 V Notes 1 and 2
36
NOTES: 1.
CPD is used to determine the dynamic power dissipation (PD in µW) PD = CPD × VCC2 × fi )ȍ (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; ȍ (CL × VCC2 × fo) = sum of the outputs.
2.
The condition is V1 = GND to VCC
ORDERING INFORMATION
PACKAGES 16-Pin Plastic SO 16-Pin Plastic SSOP Type II 16-Pin Plastic TSSOP Type I TEMPERATURE RANGE –40°C to +85°C –40°C to +85°C –40°C to +85°...
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