MC5474F539 MOTOROLA | Alldatasheet

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Technical content

The MC54 /74F539 contains two independent decoders. Each accepts two Address (A0–A 1) 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.

  • Demultiplexing Capability
  • 3-State Outputs
  • Two Completely Independent 1-of-4 Decoders
  • Input Clamp Diodes Limit High Speed T ermination Effects
  • ESD Protection > 4000 Volts CONNECTION DIAGRAM DIP (TOP VIEW) 18 17 16 15 14 13 1 2 3 4 5 6 7 20 19 VCC O 2b O 3b A1b A0b Eb OE aEa Pa O 1b O 0b OE b A0a A1a O 3a O 2a 9 10 GND 12 11 O 1a Pb O 0a MC54/74F539 DUAL 1-OF-4 DECODER WITH 3-STATE OUTPUTS FAST  SCHOTTKY TTL

ORDERING INFORMATION

VCC = PIN 20 GND = PIN 10 A0 A1P O 0 O 1 O 2 O 3 E OE DECODER a A0 A1P O 0 O 1 O 2 O 3 E OE DECODER b 13 6 7 12 11 9 8 4 17 18 3 2 1 19 LOGIC DIAGRAM (1/2 SHOWN) E P OE O 0 O 1 O 2 O 3 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.

GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54, 74 4.5 5.0 5.5 V TA Operating Ambient T emperature Range 54 –55 25 125 °CTA Operating Ambient T emperature Range 74 0 25 70 IOH Output Current — High 54, 74 –3.0 mA IOL Output Current — Low 54, 74 24 mA DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Symbol Parameter Limits Unit Test ConditionsSymbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage VIL Input LOW Voltage 0.8 V Guaranteed Input LOW Voltage VIK Input Clamp Diode Voltage –1.2 V VCC = MIN, IIN = –18 mA VOH Output HIGH Voltage 54, 74 2.4 V IOH = –3.0 mA VCC = 4.5 V VOH Output HIGH Voltage 74 2.7 V IOH = –3.0 mA VCC = 4.75 V VOL Output LOW Voltage 0.5 V IOL = 24 mA VCC = MIN IOZH Output OFF Current — HIGH 50 µA VOUT = 2.7 V VCC = MAX IOZL Output OFF Current — LOW –50 µA VOUT = 0.5 V VCC = MAX IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V IIH Input HIGH Current 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current –0.6 mA VCC = MAX, VIN = 0.5 V IOS Output Short Circuit Current (Note 2)–60 –150 mA VCC = MAX, VOUT = 0 V ICCZ Power Supply Current 40 60 mA VCC = MAX, A0, A1, E = GND OE , P = HIGH AC CHARACTERISTICS Symbol Parameter 54/74F 54F 74F UnitSymbol Parameter TA = +25 °C VCC = +5.0 V C L = 50 pF TA = –55 to +125°C VCC = 5.0 V ± 10% C L = 50 pF TA = 0 to 70°C VCC = 5.0 V ± 10% C L = 50 pF UnitSymbol Parameter Min Typ Max Min Max Min Max Unit tPLH tPHL Propagation Delay An to On 3.5 3.0 12.5 12.5 3.0 2.5 18.5 3.0 2.5 13.5 13 ns tPLH tPHL Propagation Delay E to On 3.0 3.0 2.5 3.0 13.5 3.0 3.0 11.5 ns tPLH tPHL Propagation Delay P to On 4.0 3.5 9.5 9.5 3.5 3.0 12.5 11.5 3.5 3.0 10.5 10 ns tPLH tPHL Propagation Delay P to On 5.0 3.0 14.5 9.0 4.0 3.0 19.5 11.5 4.0 3.0 15.5 9.5 ns tPZH tPZL Output Enable Time OE to On 2.5 4.0 7.5 2.0 3.5 10.5 13.5 2.0 3.5 8.5 11.5 ns tPHZ tPLZ Output Disable Time OE to On 1.5 2.0 6.0 8.0 1.0 1.5 7.5 9.5 1.0 1.5 6.5 8.5 ns

TRUTH TABLE (each half) Function Inputs Outputs Function OE E A 1 A 0 O 0 O 1 O 2 O 3 High Impedance H X X X Z Z Z Z Disable L H X X O n = P Active HIGH Output (P = L) L L L L L L L L L L H H L H L H H L L L L H L L L L H L L L L H Active LOW Output (P = H) L L L L L L L L L L H H L H L H L H H H H L H H H H L H H H H L H = HIGH Voltage Level L = LOW Voltage Level X = Don’t Care Z = High Impedance