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74AHC138 데이터시트(PDF) 1 Page - Diodes Incorporated

부품명 74AHC138
상세설명  3-TO-8 LINE DECODER DEMULTIPLEXER
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제조업체  DIODES [Diodes Incorporated]
홈페이지  http://www.diodes.com
Logo DIODES - Diodes Incorporated

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74AHC138
Document number: DS35482 Rev. 2 - 2
1 of 10
www.diodes.com
June 2013
© Diodes Incorporated
74AHC138
3-TO-8 LINE DECODER DEMULTIPLEXER
Description
The 74AHC138 is an advanced high speed CMOS device.
The device accepts a three bit binary weighted address on input
pins A0, A1 and A2 and when enabled will produce one active low
output with the remaining seven being high.
There are two active LOW enable inputs E1 and E2, and one active
HIGH enable input E3. The disabled device state results in all
outputs being high. The enable state occurs with E 1 and E 2
asserted low and E3 asserted high.
The multiple enable lines allow for the parallel expansion of
decoders to create 4-to-16 line versions with no additional parts and
5-to-32 versions with the addition of a single inverter.
Features
Wide Supply Voltage Range from 2.0 V to 5.5 V
Sinks or sources 8mA at Vcc = 4.5V
CMOS low power consumption
Schmitt Trigger Action at All Inputs
Inputs accept up to 5.5 V
ESD Protection Tested per JESD 22
Exceeds 200-V Machine Model (A115-A)
Exceeds 2000-V Human Body Model (A114-A)
Exceeds 1000-V Charged Device Model (C101C)
Latch-Up Exceeds 250mA per JESD 78, Class II
SO16 Available in “Green” Molding Compound
(no Br, Sb)
Lead-Free Finish; RoHS Compliant (Notes 1 & 2)
Pin Assignments
Applications
Memory chip select decoding
Demultiplexing
Single line peripheral control
Allow simple serial bit streams from a microcontroller to control
as many peripheral lines as needed.
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)
and < 1000 ppm antimony compounds.
Click for Ordering Information


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