MC14504B

MOTOROLA SEMICONDUCTOR TECHNICAL DATA MC14504B Hex Level Shifter for TTL to CMOS or CMOS to CMOS The MC14504B is a hex non–inverting level shifter using CMOS technology. The level shifter will shift a TTL signal to CMOS logic levels for any CMOS supply voltage between 5 and 15 volts. A control input also allows interface from CMOS to CMOS at one logic level to another logic level: Either up or down level translating is accomplished by selection of power supply levels VDD and VCC. The VCC level sets the input signal levels while VDD selects the output voltage levels. UP Translates from a Low to a High Voltage or DOWN Translates from a High to a Low Voltage Input Threshold Can Be Shifted for TTL Compatibility No Sequencing Required on Power Supplies or Inputs for Power Up or Power Down 3 to 18 Vdc Operation for VDD and VCC Diode Protected Inputs to VSS Capable of Driving Two Low–Power TTL Loads or One Low–Power Schottky TTL Load Over the Rated Temperature Range LOGIC DIAGRAM PIN ASSIGNMENT VCC VDD VCC Aout INPUT LEVEL SHIFTER OUTPUT Ain Bout Bin Cout MODE TTL/CMOS MODE SELECT Cin VSS Input Logic Levels TTL CMOS Output Logic Levels CMOS CMOS This device contains circuitry to protect the inputs against damage due to high static voltages or electric fields referenced to the VSS pin, only. Extra precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high–impedance circuit. For proper operation, the ranges VSS Vin 18 V...