74LS155

• Electrical Characteristics
  
• Supply Voltage (Vcc): 4.75V – 5.25V
• Nominal Voltage: 5V
• Input HIGH (VIH): ≥ 2.0V
• Input LOW (VIL): ≤ 0.8V
• Output HIGH (VOH): ≥ 2.7V @ IOH = –0.4 mA
• Output LOW (VOL): ≤ 0.5V @ IOL = 8 mA
• Propagation Delay (tpd): Typical 15 ns
• Power Dissipation: Approx. 20 mW per device

Absolute Maximum Ratings

• Vcc: 7V
• Input Voltage: –0.5V to 7V
• Operating Temperature: 0°C to +70°C
• Storage Temperature: –65°C to +150°C

Functional Characteristics

• Number of Decoders: 2
• Inputs per Decoder: 2 (A, B)
• Outputs per Decoder: 4 (Y0 – Y3, active LOW)
• Enable Input per Decoder: 1 (active LOW)
• Logic Function: When enable is active, one output goes LOW depending on the binary combination of the address inputs.