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CD74HCT139

Texas Instruments
Part Number CD74HCT139
Manufacturer Texas Instruments
Description Dual 2- to 4-Line Decoder/Demultiplexer
Published Jan 25, 2020
Detailed Description Data sheet acquired from Harris Semiconductor SCHS148D September 1997 - Revised October 2003 CD54HC139, CD74HC139, CD54...
Datasheet PDF File CD74HCT139 PDF File

CD74HCT139
CD74HCT139

Overview
Data sheet acquired from Harris Semiconductor SCHS148D September 1997 - Revised October 2003 CD54HC139, CD74HC139, CD54HCT139, CD74HCT139 High-Speed CMOS Logic Dual 2- to 4-Line Decoder/Demultiplexer [ /Title (CD74 HC139 , CD74 HCT13 9) /Subject (High Speed CMOS Logic Dual 2-to-4 Line Decod Features • Multifunction Capability - Binary to 1 of 4 Decoders or 1 to 4 Line Demultiplexer • Active Low Mutually Exclusive Outputs • Fanout (Over Temperature Range) - Standard Outputs .
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10 LSTTL Loads - Bus Driver Outputs .
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15 LSTTL Loads • Wide Operating Temperature Range .
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-55oC to 125oC • Balanced Propagation Delay and Transition Times • Significant Power Reduction Compared to LSTTL Logic ICs • HC Types - 2V to 6V Operation - High Noise Immunity: NIL = 30%, NIH = 30%of VCC at VCC = 5V • HCT Types - 4.
5V to 5.
5V Operation - Direct LSTTL Input Logic Compatibility, VIL= 0.
8V (Max), VIH = 2V (Min) - CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH • Memory Decoding, Data Routing, Code Conversion Description The ’HC139 and ’HCT139 devices contain two independent binary to one of four decoders each with a single active low enable input (1E or 2E).
Data on the select inputs (1A0 and 1A1 or 2A0 and 2A1) cause one of the four normally high outputs to go low.
If the enable input is high all four outputs remain high.
For demultiplexer operation the enable input is the data input.
The enable input also functions as a chip select when these devices are cascaded.
This device is functionally the same as the CD4556B and is pin compatible with it.
The outputs of these devices can drive 10 low power Schottky TTL equivalent loads.
The HCT logic family is functionally as well as pin equivalent to the LS logic family.
Ordering Information PART NUMBER CD54HC139F3A CD54HCT139F3A CD74HC139E CD74HC139M CD74HC139MT TEMP.
RANGE (oC) -55 to 125 -55 to 125 -55 to 125 -55 to 125 -55 to 125 PACKAGE 16 Ld CERDIP 16 Ld CERDIP 16 Ld PDIP 16 Ld SOIC...


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