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74HCT139 반도체 회로 부품 판매점

Dual 2-to-4 line decoder/demultiplexer



Philips 로고
Philips
74HCT139 데이터시트, 핀배열, 회로
INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications
The IC06 74HC/HCT/HCU/HCMOS Logic Package Information
The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines
74HC/HCT139
Dual 2-to-4 line
decoder/demultiplexer
Product specification
File under Integrated Circuits, IC06
September 1993


74HCT139 데이터시트, 핀배열, 회로
Philips Semiconductors
Dual 2-to-4 line decoder/demultiplexer
Product specification
74HC/HCT139
FEATURES
Demultiplexing capability
Two independent 2-to-4 decoders
Multifunction capability
Active LOW mutually exclusive outputs
Output capability: standard
ICC category: MSI
GENERAL DESCRIPTION
The 74HC/HCT139 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). It is specified in compliance with JEDEC
standard no. 7A.
The 74HC/HCT139 are high-speed, dual 2-to-4 line
decoder/multiplexers. 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 enable 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.
The “139” is identical to the HEF4556 of the HE4000B
family.
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns
SYMBOL
tPHL/ tPLH
CI
CPD
PARAMETER
propagation delay
nAn to nYn
nE3 to nYn
input capacitance
power dissipation capacitance per multiplexer
CONDITIONS
TYPICAL
HC HCT
CL = 15 pF; VCC = 5 V
11
13
10 13
3.5 3.5
notes 1 and 2
42 44
Notes
1. 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
fo = output frequency in MHz
(CL × VCC2 × fo) = sum of outputs
CL = output load capacitance in pF
VCC = supply voltage in V
2. For HC the condition is VI = GND to VCC
For HCT the condition is VI = GND to VCC 1.5 V
UNIT
ns
ns
pF
pF
APPLICATIONS
Memory decoding or data-routing
Code conversion
ORDERING INFORMATION
See “74HC/HCT/HCU/HCMOS Logic Package Information”.
September 1993
2




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74HCT139 multiplexer

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