CD4532BE CD4532B CD4532 CMOS IC

ICs of CD4532BE

Description

CD4532B consists of combinational logic that encodes the highest priority input (D7-D0) to a 3-bit binary code. The eight inputs, D7 through D0, each have an assigned priority; D7 is the highest priority and D0 is the lowest. The priority encoder is inhibited when the chip-enable input E_I is low. When E_I is high, the binary representation of the highest-priority input appears on output lines Q2-Q0, and the group select line GS is high to indicate that priority inputs are present. The enable-out (E_O) is high when no priority inputs are present. If any one input is high, E_O is low and all cascaded lower-order stages are disabled

• Converts from 1 of 8 to binary
• Provides cascading feature to handle any number of inputs
• Group select indicates one or more priority inputs
• Standardized, symmetrical output characteristics
• 100% tested for quiescent current at 20 V
• Maximum input current of 1 µA at 18 V over full package temperature range; 100 nA at 18 V and 25°C
• Noise margin (full package-temperature range):
       0.5 V at V_DD = 5 V
       1.5 V at V_DD = 10 V
       1.5 V at V_DD = 15 V
• 5-V, 10-V, and 15-V parametric ratings
• Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of 'B' Series CMOS Devices"
• Applications:
  • Priority encoder
  • Binary or BCD encoder (keyboard encoding)
  • Floating point arithmetic

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