Texas Instruments SN74HCT139N Manual

Texas Instruments Ikke kategoriseret SN74HCT139N

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 

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SCLS066D − MARCH 1982 − REVISED SEPTEMBER 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

DOperating Voltage Range of 4.5 V to 5.5 V

DOutputs Can Drive Up To 10 LSTTL Loads

DLow Power Consumption, 80-µA Max ICC

DTypical tpd = 10 ns

D±4-mA Output Drive at 5 V

DLow Input Current of 1 µA Max

DInputs Are TTL-Voltage Compatible

DDesigned Specifically for High-Speed

Memory Decoders and Data-Transmission

Systems

DIncorporate Two Enable Inputs to Simplify

Cascading and/or Data Reception

description/ordering information

The ’HCT139 devices are designed for

high-performance memory-decoding or

data-routing applications requiring very short

propagation delay times. In high-performance

memory systems, these decoders can minimize

the eects of system decoding. When employed

with high-speed memories utilizing a fast enable

circuit, the delay time of these decoders and the

enable time of the memory usually are less than

the typical access time of the memory. This means

that the eective system delay introduced by the

decoders is negligible.

ORDERING INFORMATION

TAPACKAGE†ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP − N Tube of 25 SN74HCT139N SN74HCT139N

Tube of 40 SN74HCT139D

SOIC − D Reel of 2500 SN74HCT139DR HCT139

−40° °C to 85 C

SOIC D

Reel of 250 SN74HCT139DT

HCT139

40 CC to 85

SSOP − DB Reel of 2000 SN74HCT139DBR HT139

TSSOP PW

Reel of 2000 SN74HCT139PWR

HT139

TSSOP − PW Reel of 250 SN74HCT139PWT HT139

CDIP − J Tube of 25 SNJ54HCT139J SNJ54HCT139J

−55° °C to 125 C CFP − W Tube of 150 SNJ54HCT139W SNJ54HCT139W

LCCC − FK Tube of 55 SNJ54HCT139FK SNJ54HCT139FK

†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications o

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

3 2 1 20 19

9 10 11 12 13

2Y0

2Y1

1Y0

1Y1

1Y2

2Y3

2Y2

1Y3

GND

SN54HCT139 . . . FK PACKAGE

(TOP VIEW)

NC − No internal connection

1Y0

1Y1

1Y2

1Y3

GND

VCC

2Y0

2Y1

2Y2

2Y3

SN54HCT139 . . . J OR W PACKAGE

SN74HCT139 . . . D, DB, N, OR PW PACKAGE

(TOP VIEW)

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   

SCLS066D − MARCH 1982 − REVISED SEPTEMBER 2003

2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

description/ordering information (continued)

The ’HCT139 devices comprise two individual 2-line to 4-line decoders in a single package. The active-low

enable (G) input can be used as a data line in demultiplexing applications. These decoders/demultiplexers

feature fully buffered inputs, each of which represents only one normalized load to its driving circuit.

FUNCTION TABLE

INPUTS

OUTPUTS

SELECT

OUTPUTS

GB A Y0 Y1 Y2 Y3

HXXHHHH

L L L L H H H

L L H H L H H

L H L H H L H

L H H H H H L

logic diagram (positive logic)

1Y0

1Y1

1Y2

1Y3

2Y0

2Y1

2Y2

2Y3

Pin numbers shown are for the D, DB, J, N, PW, and W packages.

Produkt Specifikationer

Mærke:	Texas Instruments
Kategori:	Ikke kategoriseret
Model:	SN74HCT139N
Type:	Logisk kredsløb
Bredde:	19.69 mm
Dybde:	6.6 mm
Højde:	4.57 mm
Antal pr. pakke:	25 stk
Pakkedybde:	506 mm
Pakkebredde:	13.97 mm
Pakkehøjde:	11.23 mm
Opbevaringstemperatur (T-T):	-65 - 150 °C
Driftstemperatur (T-T):	-40 - 85 °C
Pakketype:	PDIP
Antal stifter:	16
Bredde (med stifter):	19.69 mm
Højde (med stifter):	8.26 mm
Dybde (med stifter):	10.92 mm