參數(shù)資料
型號： 935188300112
廠商： NXP SEMICONDUCTORS
元件分類： 編、解碼器及復(fù)用、解復(fù)用
英文描述： HCT SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16
封裝： SOT-403-1, TSSOP-16
文件頁數(shù)： 4/11頁
文件大?。?/td> 133K
代理商： 935188300112
September 1993
2
Philips Semiconductors
Product specication
Dual 2-to-4 line decoder/demultiplexer
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
Notes
1. CPD is used to determine the dynamic power dissipation (PD in W):
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
APPLICATIONS
Memory decoding or data-routing
Code conversion
ORDERING INFORMATION
See
“74HC/HCT/HCU/HCMOS Logic Package Information”.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
HC
HCT
tPHL/ tPLH
propagation delay
CL = 15 pF; VCC = 5 V
nAn to nYn
11
13
ns
nE3 to nYn
10
13
ns
CI
input capacitance
3.5
pF
CPD
power dissipation capacitance per multiplexer
notes 1 and 2
42
44
pF
相關(guān)PDF資料
PDF描述
933713510652 HCT SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16
935174430118 HC/UH SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16
06743.15 Axial Lead and Cartridge Fuses - Ceramic Body
935188340112 HCT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDSO16
935187340118 HCT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDSO16
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