CD4532 - 8 Bit Priority Encoder IC (Original)
CD4532 - 8 Bit Priority Encoder IC The CD4x Series 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). Pinout: Pinout of CD4532 IC 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
- 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 V1.5 V at VDD = 10 V1.5 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"
- Part number CD4532B
- Technology Family CD4000
- VCC (Min) (V) 3
- VCC (Max) (V) 18
- Channels (#) 1
- Voltage (Nom) (V) 5
- 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