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| MC54/74F539 DUAL 1-OF-4 DECODER WITH 3-STATE OUTPUTS The MC54 / 74F539 contains two independent decoders. Each accepts two Address (A0 - A1) input signals and decodes them to select one of four mutually exclusive outputs. A polarity control input (P) determines whether the outputs are active HIGH (P = L) or active LOW (P = H). An active LOW input Enable (E) is available for data demultiplexing; data is routed to the selected output in non-inverted form in the active LOW mode or in inverted form in the active HIGH mode. A HIGH Signal on the active LOW Output Enable (OE) input forces the 3-state outputs to the high impedance state. DUAL 1-OF-4 DECODER WITH 3-STATE OUTPUTS FASTTM SCHOTTKY TTL * * * * * Demultiplexing Capability 3-State Outputs Two Completely Independent 1-of-4 Decoders Input Clamp Diodes Limit High Speed Termination Effects ESD Protection > 4000 Volts CONNECTION DIAGRAM DIP (TOP VIEW) VCC O3b A1b A0b 20 19 18 17 Eb 16 Ea 15 OEa Pa 14 13 O0a O1a 12 11 20 1 J SUFFIX CERAMIC CASE 732-03 20 1 N SUFFIX PLASTIC CASE 738-03 1 2 3 4 Pb 5 6 7 8 9 10 20 1 O2b O1b O0b OEb A0a A1a O3a O2a GND DW SUFFIX SOIC CASE 751D-03 LOGIC DIAGRAM (1/2 SHOWN) A1 ORDERING INFORMATION MC54FXXXJ Ceramic MC74FXXXN Plastic MC74FXXXDW SOIC A0 E LOGIC SYMBOL 13 6 7 P A0 A1 P 15 14 E DECODER a OE O0 O1 O2 O3 12 11 9 8 4 17 18 OE 16 O0 O1 O2 O3 5 E DECODER b OE Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. VCC = PIN 20 GND = PIN 10 P A0 A1 O0 O1 O2 O3 3 2 1 19 FAST AND LS TTL DATA 4-209 MC54/74F539 GUARANTEED OPERATING RANGES Symbol VCC TA IOH IOL Supply Voltage Operating Ambient Temperature Range 74 Output Current -- High Output Current -- Low 54, 74 54, 74 0 25 70 - 3.0 24 Parameter 54, 74 54 Min 4.5 - 55 Typ 5.0 25 Max 5.5 125 Unit V C mA mA DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VIH VIL VIK VOH VOL IOZH IOZL IIH IIL IOS ICCZ Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage 54, 74 Output HIGH Voltage 74 Output LOW Voltage Output OFF Current -- HIGH Output OFF Current -- LOW Input HIGH Current 0.1 Input LOW Current Output Short Circuit Current (Note 2) Power Supply Current - 60 40 - 0.6 -150 60 2.7 0.5 50 - 50 20 V V A A A mA mA mA mA 2.4 Min 2.0 0.8 - 1.2 Typ Max Unit V V V V Test Conditions Guaranteed Input HIGH Voltage Guaranteed Input LOW Voltage VCC = MIN, IIN = - 18 mA IOH = - 3.0 mA IOH = - 3.0 mA IOL = 24 mA VOUT = 2.7 V VOUT = 0.5 V VCC = 4.5 V VCC = 4.75 V VCC = MIN VCC = MAX VCC = MAX VCC = MAX, VIN = 2.7 V VCC = MAX, VIN = 7.0 V VCC = MAX, VIN = 0.5 V VCC = MAX, VOUT = 0 V VCC = MAX, A0 , A1, E = GND OE, P = HIGH AC CHARACTERISTICS 54 / 74F TA = + 25C VCC = + 5.0 V CL = 50 pF Symbol tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ Parameter Propagation Delay An to On Propagation Delay E to On Propagation Delay P to On Propagation Delay P to On Output Enable Time OE to On Output Disable Time OE to On Min 3.5 3.0 3.0 3.0 4.0 3.5 5.0 3.0 2.5 4.0 1.5 2.0 Typ Max 12.5 12.5 11 11 9.5 9.5 14.5 9.0 7.5 10 6.0 8.0 54F TA = -55 to +125C VCC = 5.0 V 10% CL = 50 pF Min 3.0 2.5 2.5 3.0 3.5 3.0 4.0 3.0 2.0 3.5 1.0 1.5 Max 18.5 16 14 13.5 12.5 11.5 19.5 11.5 10.5 13.5 7.5 9.5 74F TA = 0 to 70C VCC = 5.0 V 10% CL = 50 pF Min 3.0 2.5 3.0 3.0 3.5 3.0 4.0 3.0 2.0 3.5 1.0 1.5 Max 13.5 13 12 11.5 10.5 10 15.5 9.5 8.5 11.5 ns 6.5 8.5 Unit ns ns ns ns FAST AND LS TTL DATA 4-210 MC54/74F539 TRUTH TABLE (each half) Inputs Function High Impedance Disable Active HIGH Output (P = L) Active LOW Output (P = H) H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High Impedance Outputs A1 X X L L H H L L H H A0 X X L H L H L H L H H L L L L H H H L H L L H L H H O0 Z O1 Z On = P L L H L H H L H L L L H H H H L O2 Z O3 Z OE H L L L L L L L L L E X H L L L L L L L L FAST AND LS TTL DATA 4-211 |
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