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PDF U74HCT138 Data sheet ( Hoja de datos )

Número de pieza U74HCT138
Descripción 3-TO-8 LINE DECODERS / DEMULTIPLEXERS
Fabricantes Unisonic Technologies　
Logotipo Unisonic Technologies Logotipo



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No Preview Available ! U74HCT138 Hoja de datos, Descripción, Manual

UNISONIC TECHNOLOGIES CO., LTD
U74HCT138
3-TO-8 LINE DECODERS /
DEMULTIPLEXERS
CMOS IC
„ DESCRIPTION
The U74HCT138 decodes a three−bit Address to 1−of−8
active−low outputs.
This device features three Chip Select inputs, two active−low and
one active−high, to facilitate the demultiplexing, cascading and
chip−selecting functions.
The demultiplexing function is accomplished by using the Address
inputs to select the desired device output. One of the Chip Selects is
used as a data input while the other Chip Selects are held in their
active states.
„ FEATURES
* Operate from 4.5V to 5.5V
* Low Input Current:1.0uA Max
* Low Power Consumption: 8μA Max
* Typical tPD=15ns
* Inputs are TTL voltage compatible
„ ORDERING INFORMATION
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Ordering Number
Lead Free
Halogen Free
U74HCT138L-S16-R
U74HCT138G-S16-R
U74HCT138L-S16-T
U74HCT138G-S16-T
Package
SOP-16
SOP-16
Packing
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
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U74HCT138 pdf
U74HCT138
„ TEST CIRCUIT AND WAVEFORMS
Test Circuit
CMOS IC
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Propagation Delay and Output Tansition Times
Note: CL includes probe and jig capacitance.
All input pulses are supplied by generators having the following characteristics: Zo = 50Ω, tR =6ns, tF =6ns.
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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