CD4532 - 8 Bit Priority Encoder IC

CD4532 - 8 Bit Priority Encoder IC

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  • 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 VDD = 5 V
    1.5 V at VDD = 10 V
    1.5 V at VDD = 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"

CD4532 - 8 Bit Priority Encoder IC

CD4532 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 EI is low. When EI 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 (EO) is high when no priority inputs are present. If any one input is high, EO is low and all cascaded lower-order stages are disabled.

The CD4532 types are supplied in 16-lead hermetic dual-in-line ceramic packages (F3A suffix), 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline packages (M, M96, MT, and NSR suffixes), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).

Applications:

  • Priority encoder
  • Binary or BCD encoder (keyboard encoding)
  • Floating-point arithmetic

Package Includes:

Selected qty of IC - CD4532

Specifications:

Part number CD4532B
Technology Family CD4000
VCC (Min) (V) 3
VCC (Max) (V) 18
Channels (#) 1
Voltage (Nom) (V) 5, 10, 15
F @ nom voltage (Max) (MHz) 8
ICC @ nom voltage (Max) (mA) 0.3
tpd @ nom Voltage (Max) (ns) 110
IOL (Max) (mA) 1.5
IOH (Max) (mA) -1.5
Function Encoder
Type Standard
Operating temperature range (C) -55 to 125
Package Group PDIP|16
Configuration 08:04
Bits (#) 8
Digital input leakage (Max (uA) 5
ESD CDM (kV) 0.75
ESD HBM (kV) 2

ADDITIONAL RESOURCES

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