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Part: 74AC139MTCX
Category:
Description: Dual 1-of-4 Decoder/demultiplexer
Company: Fairchild Semiconductor
Datasheet: Download 74AC139MTCX datasheet File size : 232 kB
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74AC139 · 74ACT139 Dual 1-of-4 Decoder/Demultiplexer
November 1988 Revised November 1999
74AC139 · 74ACT139 Dual 1-of-4 Decoder/Demultiplexer
General Description
The AC/ACT139 is a high-speed, dual 1-of-4 decoder/ demultiplexer. The device has two independent decoders, each accepting two inputs and providing four mutuallyexclusive active-LOW outputs. Each decoder has an active-LOW Enable input which can be used as a data input for a 4-output demultiplexer. Each half of the AC/ ACT139 can be used as a function generator providing all four minterms of two variables.
Features
s ICC reduced by 50% s Multifunction capability s Two completely independent 1-of-4 decoders s Active LOW mutually exclusive outputs s Outputs source/sink 24 mA s ACT139 has TTL-compatible inputs
Ordering Code:
Order Number 74AC139SC 74AC139SJ 74AC139MTC 74AC139PC 74ACT139SC 74ACT139SJ 74ACT139MTC 74ACT139PC Package Number M16A M16D MTC16 N16E M16A M16D MTC16 N16E Package Description 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Body 16-Lead Small Outline Package (SOIC), EIAJ Type II, 5.3mm Wide 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Body 16-Lead Small Outline Package (SOIC), EIAJ Type II, 5.3mm Wide 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Device also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code.
Connection Diagram
Pin Descriptions
Pin Names A0, A1 E O0O3 Description Address Inputs Enable Inputs Outputs
FACT is a trademark of Fairchild Semiconductor Corporation.
© 1999 Fairchild Semiconductor Corporation
DS009926
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74AC139 · 74ACT139
Logic Symbols
Functional Description
The AC/ACT139 is a high-speed dual 1-of-4 decoder/ demultiplexer. The device has two independent decoders, each of which accepts two binary weighted inputs (A0A1) and provides four mutually exclusive active-LOW outputs (O0O3). Each decoder has an active-LOW enable (E). When E is HIGH all outputs are forced HIGH. The enable can be used as the data input for a 4-output demultiplexer application. Each half of the AC/ACT139 generates all four minterms of two variables. These four minterms are useful in some applications, replacing multiple gate functions as shown in Figure 1, and thereby reducing the number of packages required in a logic network.
IEEE/IEC
FIGURE 1. Gate Functions (Each Half)
Truth Table
Inputs E H L L L L A0 X L H L H A1 X L L H H O0 H L H H H Outputs O1 H H L H H O2 H H H L H O3 H H H H L
Logic Diagram
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
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74AC139 · 74ACT139
Absolute Maximum Ratings(Note 1)
Supply Voltage (VCC) DC Input Diode Current (IIK) VI = -0.5V VI = VCC + 0.5V DC Input Voltage (VI) DC Output Diode Current (IOK) VO = -0.5V VO = VCC + 0.5V DC Output Voltage (VO) DC Output Source or Sink Current (IO) DC VCC or Ground Current per Output Pin (ICC or IGND) Storage Temperature (TSTG) Junction Temperature (TJ) PDIP 140°C ±50 mA -65°C to +150°C ±50 mA -20 mA +20 mA -0.5V to VCC + 0.5V -20 mA +20 mA -0.5V to VCC + 0.5V -0.5V to +7.0V
Recommended Operating Conditions
Supply Voltage (VCC) AC ACT Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) Minimum Input Edge Rate (V/t) AC Devices VIN from 30% to 70% of VCC VCC @ 3.3V, 4.5V, 5.5V Minimum Input Edge Rate (V/t) ACT Devices VIN from 0.8V to 2.0V VCC @ 4.5V, 5.5V 125 mV/ns
Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The databook specifications should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. Fairchild does not recommend operation of FACT circuits outside databook specifications.
2.0V to 6.0V 4.5V to 5.5V 0V to VCC 0V to VCC -40°C to +85°C
125 mV/ns
DC Electrical Characteristics for AC
Symbol VIH Parameter Minimum HIGH Level Input Voltage VIL Maximum LOW Level Input Voltage VOH Minimum HIGH Level Output Voltage V CC (V) 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5 .5 3.0 4.5 5.5 VOL Maximum LOW Level Output Voltage 3.0 4.5 5.5 3.0 4.5 5.5 IIN (Note 4) IOLD IOHD ICC (Note 4) Maximum Input Leakage Current Minimum Dynamic Output Current (Note 3) Maximum Quiescent Supply Current 5.5 5. 5 5.5 5.5 4 .0 0.002 0.001 0.001 TA = +25°C Typ 1.5 2.25 2.75 1.5 2.25 2.75 2.99 4.49 5.49 2.1 3 .15 3 .85 0.9 1 .35 1 .65 2.9 4 .4 5 .4 2 .56 3 .86 4 .86 0.1 0.1 0.1 0 .36 0 .36 0 .36 ± 0.1 TA = -40°C to +85°C Guaranteed Limits 2.1 3 .15 3 .85 0.9 1 .35 1 .65 2.9 4.4 5 .4 VIN = VIL or VIH 2 .46 3 .76 4 .76 0.1 0.1 0.1 VIN = VIL or VIH 0 .44 0 .44 0 .44 ± 1.0 75 -75 40.0 µA mA mA µA V IOL = 12 mA IOL = 24 mA IOL = 24 mA (Note 2) VI = VCC, GND VOLD = 1.65V Max VOHD = 3.85V Min VIN = VCC or GND V IOUT = 50 µA V IOH = -12 mA IOH = -24 mA IOH = -24 mA (Note 2) V IOUT = -50 µA V VOUT = 0.1V or VCC - 0.1V V Units Conditions VOUT = 0.1V or VCC - 0.1V
Note 2: All outputs loaded; thresholds on input associated with output under test. Note 3: Maximum test duration 2.0 ms, one output loaded at a time. Note 4: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V VCC.
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74AC139 · 74ACT139
DC Electrical Characteristics for ACT
Symbol VIH VIL VOH Parameter Minimum HIGH Level Input Voltage Maximum LOW Level Input Voltage Minimum HIGH Level Output Voltage VCC (V) 4.5 5.5 4.5 5.5 4.5 5.5 4.5 5.5 VOL Maximum LOW Level Output Voltage 4.5 5.5 4.5 5.5 IIN ICCT IOLD IOHD ICC Maximum Input Leakage Current Maximum ICC/Input Minimum Dynamic Output Current (Note 6) Maximum Quiescent Supply Current 5.5 5.5 5.5 5.5 5.5 4 .0 0 .6 0.001 0.001 TA = +25°C Typ 1.5 1 .5 1.5 1 .5 4.49 5.49 2.0 2.0 0.8 0.8 4 .4 5 .4 3 .86 4 .86 0.1 0.1 0 .36 0 .36 ± 0.1 TA = -40°C to +85°C Guaranteed Limits 2.0 2 .0 0.8 0 .8 4.4 5.4 3 .76 4 .76 0.1 0 .1 0 .44 0 .44 ± 1.0 1 .5 75 - 75 40.0 µA mA mA mA µA V Units V V V Conditions VOUT = 0.1V or VCC - 0.1V VOUT = 0.1V or VCC - 0.1V IOUT = -50 µA VIN = VIL or VIH V IOH = -24 mA IOH = -24 mA (Note 5) IOUT = 50 µA VIN = VIL or VIH V IOL = 24 mA IOL = 24 mA (Note 5) VI = VCC, GND VI = VCC - 2.1V VOLD = 1.65V Max VOHD = 3.85V Min VIN = VCC or GND
Note 5: All outputs loaded; thresholds on input associated with output under test. Note 6: Maximum test duration 2.0 ms, one output loaded at a time.
AC Electrical Characteristics for AC
VCC Symbol Parameter (V) (Note 7) tPLH tP H L tPLH tP H L Propagation Delay An to On Propagation Delay An to On Propagation Delay En to On Propagation Delay En to On
Note 7: Voltage Range 3.3 is 3.3V ± 0.3V. Voltage Range 5.0 is 5.0V ± 0.5V
TA = +25°C CL = 50 pF Min 4.0 3 .0 3.0 2 .5 4.5 3 .5 4.0 2 .5 Typ 8.0 6.5 7.0 5.5 9.5 7.0 8.0 6.0 Max 11.5 8.5 10.0 7.5 12.0 8.5 10.0 7.5
TA = -40°C to +85°C CL = 50 pF Min 3.5 2.5 2.5 2.0 3.5 3.0 3.0 2.5 Max 13.0 9 .5 11.0 8 .5 13.0 10.0 11.0 8 .5 ns ns ns ns Units
3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0
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74AC139 · 74ACT139
AC Electrical Characteristics for ACT
VCC Symbol tPLH tPHL tPLH tPHL Parameter Propagation Delay An to On Propagation Delay An to On Propagation Delay En to On Propagation Delay En to On
Note 8: Voltage Range 5.0 is 5.0V ± 0.5V
TA = +25°C CL = 50 pF Min 1 .5 1 .5 2 .5 2 .0 Typ 6.0 6.0 7.0 7.0 M ax 8 .5 9 .5 10.0 9 .5
TA = -40°C to +85°C CL = 50 pF M in 1.5 1.5 2 .0 1.5 Max 9.5 10.5 11.0 10.5 ns ns ns ns Units
(V) (Note 8) 5.0 5.0 5.0 5.0
Capacitance
Symbol CIN CPD Parameter Input Capacitance Power Dissipation Capacitance Typ 4.5 40.0 Units pF pF VCC = OPEN VCC = 5.0V Conditions
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