SN74LS242 - Motorola

SN74LS242 QUAD BUS TRANSCEIVER

QUAD BUS TRANSCEIVER The SN54/ 74LS242 and SN54 / 74LS243 are Quad Bus Transmitters / Receivers designed for 4-line asynchronous 2-way data communications between data buses. SN54/74LS242 SN54/74LS243 • Hysteresis at Inputs to Improve Noise Immunity • 2-Way Asynchronous Data Bus Communication • Input Clamp Diodes Limit High-Speed Termination Effects LOGIC .

Features

H (Z) H L INPUTS OUTPUT GAB L L H D L H X L H (Z) INPUTS OUTPUT GAB L H H D X L H (Z) H L SN54/74LS243 INPUTS OUTPUT H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = HIGH Impedance FAST AND LS TTL DATA 5-393 SN54/74LS242
• SN54/74LS243 GUARANTEED OPERATING RANGES Symbol VCC TA IOH Supply Voltage Operating Ambient Temperature Range Output Current — High Parameter 54 74 54 74 54, 74 54 74 IOL Output Current — Low 54 74 Min 4.5 4.75
  – 55 0 Typ 5.0 5.0 25 25 Max 5.5 5.25 125 70
  – 3.0
  – 12
  – 15 12 24 Unit V °C mA mA mA DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless.