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SN74LS155D Datasheet(PDF) 4 Page - Motorola, Inc |
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SN74LS155D Datasheet(HTML) 4 Page - Motorola, Inc |
4 / 4 page 5-4 FAST AND LS TTL DATA SN54/74LS156 GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 74 4.5 4.75 5.0 5.0 5.5 5.25 V TA Operating Ambient Temperature Range 54 74 –55 0 25 25 125 70 °C VOH Output Voltage — High 54, 74 5.5 V IOL Output Current — Low 54 74 4.0 8.0 mA DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Sb l P Limits Ui T C di i Symbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs VIL Input LOW Voltage 54 0.7 V Guaranteed Input LOW Voltage for VIL Input LOW Voltage 74 0.8 V pg All Inputs VIK Input Clamp Diode Voltage – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA IOH Output HIGH Current 54, 74 100 µA VCC = MIN, VOH = MAX VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, VIN =VIL or VIH VOL Output LOW Voltage 74 0.35 0.5 V IOL = 8.0 mA VIN = VIL or VIH per Truth Table 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 – 0.4 mA VCC = MAX, VIN = 0.4 V ICC Power Supply Current 10 mA VCC = MAX AC CHARACTERISTICS (TA = 25°C) Sb l P Limits Ui T C di i Symbol Parameter Min Typ Max Unit Test Conditions tPLH tPHL Propagation Delay Address, Ea or Eb to Output 25 34 40 51 ns Figure 1 V5 0 V tPLH tPHL Propagation Delay Address to Output 31 34 46 51 ns Figure 2 VCC = 5.0 V CL = 15 pF RL = 2.0 kΩ tPLH tPHL Propagation Delay Ea to Output 32 32 48 48 ns Figure 1 RL = 2.0 kΩ AC WAVEFORMS Figure 1 Figure 2 VIN VOUT 1.3 V tPHL 1.3 V 1.3 V 1.3 V tPLH VIN VOUT 1.3 V tPHL 1.3 V 1.3 V tPLH 1.3 V |
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