74F148

Features:

 Encodes eight data lines in priority
 Provides 3-bit binary priority code
 Input enable capability
 Signals when data is present on any input
 Cascadable for priority encoding of n bits


Pinout




Specifications

Storage Temperature                                   -65°C to +150°C
Ambient Temperature under Bias                 -55°C to +125°C
Junction Temperature under Bias                 -55°C to +150°C
V_CC Pin Potential to Ground Pin                        -0.5V to +7.0V
Input Voltage (Note 2)                                     -0.5V to +7.0V
Input Current (Note 2)                              -30 mA to +5.0 mA
Voltage Applied to Output
in HIGH State (with V_CC = 0V)
Standard Output                                               -0.5V to V_CC
3-STATE Output                                              -0.5V to +5.5V
Current Applied to Output
in LOW State (Max)                        twice the rated I_OL (mA)
Free Air Ambient Temperature                       0°C to +70°C
Supply Voltage                                            +4.5V to +5.5V


Description

   The 74F148 provides three bits of binary coded output representing the position of the highest order active input, along with an output indicating the presence of any active input. It is easily expanded via input and output enables to provide priority encoding over many bits.