74F139 Dual 1-of-4 Decoder/Demultiplexer April 1988 Revised July 1999 74F139 Dual 1-of-4 Decoder/Demultiplexer General Description Features The F139 is a high-speed, dual 1-of-4 decoder/demultiplexer. The device has two independent decoders, each accepting two inputs and providing four mutually exclusive 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 F139 can be used as a function generator providing all four minterms of two variables. ■ Multifunction capability ■ Two completely independent 1-of-4 decoders ■ Active LOW mutually exclusive outputs Ordering Code: Order Number Package Number Package Description 74F139SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow 74F139SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74F139PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbols Connection Diagram Truth Table IEEE/IEC Inputs Outputs E A0 A1 O0 O1 O2 O3 H X X H H H H L L L L H H H L H L H L H H L L H H H L H L H H H H H L H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial © 1999 Fairchild Semiconductor Corporation DS009479 www.fairchildsemi.com 74F139 Unit Loading/Fan Out U.L. Pin Names Description Input IIH/IIL HIGH/LOW Output IOH/IOL A0 , A1 Address Inputs 1.0/1.0 20 µA/−0.6 mA E Enable Inputs (Active LOW) 1.0/1.0 20 µA/−0.6 mA O0–O3 Outputs (Active LOW) 50/33.3 −1 mA/20 mA Functional Description The F139 is a high-speed dual 1-of-4 decoder/demultiplexer. The device has two independent decoders, each of which accepts two binary weighted inputs (A0–A1) and provides four mutually exclusive active LOW Outputs (O0–O3). 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 F139 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. FIGURE 1. Gate Functions (each half) Logic Diagram Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. www.fairchildsemi.com 2 Recommended Operating Conditions Storage Temperature −65°C to +150°C Ambient Temperature under Bias −55°C to +125°C Free Air Ambient Temperature Junction Temperature under Bias −55°C to +150°C Supply Voltage 0°C to +70°C +4.5V to +5.5V −0.5V to +7.0V VCC Pin Potential to Ground Pin Input Voltage (Note 2) −0.5V to +7.0V Input Current (Note 2) −30 mA to +5.0 mA Voltage Applied to Output in HIGH State (with VCC = 0V) Standard Output −0.5V to VCC 3 STATE Output −0.5V to +5.5V Note 1: Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired. Functional operation under these conditions is not implied. Current Applied to Output Note 2: Either voltage limit or current limit is sufficient to protect inputs. twice the rated IOL (mA) in LOW State (Max) ESD Last Passing Voltage (Min) 4000V DC Electrical Characteristics Symbol Parameter Min Typ Max 2.0 Units VCC Conditions VIH Input HIGH Voltage VIL Input LOW Voltage 0.8 V VCD Input Clamp Diode Voltage −1.2 V Min VOH Output HIGH Voltage V Min 0.5 V Min IOL = 20 mA 10% VCC 2.5 5% VCC 2.7 V 10% VCC Recognized as a HIGH Signal Recognized as a LOW Signal IIN = −18 mA IOH = −1 mA IOH = −1 mA VOL Output LOW Voltage IIH Input HIGH Current 5.0 µA Max VIN = 2.7V IBVI Input HIGH Current Breakdown Test 7.0 µA Max VIN = 7.0V ICEX Output HIGH Leakage Current 50 µA Max VOUT = VCC VID Input Leakage Test V 0.0 3.75 µA 0.0 −0.6 mA Max VIN = 0.5V −150 mA Max VOUT = 0V 20 mA Max 4.75 IOD Output Leakage Circuit Current IIL Input LOW Current IOS Output Short-Circuit Current ICC Power Supply Current −60 13 IID = 1.9 µA All Other Pins Grounded VIOD = 150 mV All Other Pins Grounded AC Electrical Characteristics Symbol Parameter TA = +25°C TA = 0°C to +70°C VCC = +5.0V VCC = +5.0V CL = 50 pF CL = 50 pF Min Typ Max Min Max tPLH Propagation Delay 3.5 5.3 7.5 3.0 8.5 tPHL A0 or A1 to On 4.0 6.1 8.0 4.0 9.0 tPLH Propagation Delay 3.5 5.4 7.0 3.5 8.0 tPHL E1 to On 3.0 4.7 6.5 3.0 7.5 3 Units ns ns www.fairchildsemi.com 74F139 Absolute Maximum Ratings(Note 1) 74F139 Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow Package Number M16A 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M16D www.fairchildsemi.com 4 74F139 Dual 1-of-4 Decoder/Demultiplexer Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N16E Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. www.fairchildsemi.com 5 www.fairchildsemi.com