CD4532 Priority Encoder
Converts highest priority input to 3-bit binary code with cascading feature
- Part number: CD4532B
- Technology Family: CD4000
- VCC (Min): 3V
- VCC (Max): 18V
- Channels (#): 1
- Voltage (Nom): 5, 10, 15V
- F @ nom voltage (Max): 8MHz
- ICC @ nom voltage (Max): 0.3mA
- tpd @ nom Voltage (Max): 110ns
- IOL (Max): 1.5mA
- IOH (Max): -1.5mA
- Function: Encoder
- Type: Standard
- Rating: See Data Sheet
- Operating temperature range (C): -55 to 125
- Package Group: PDIP|16
- Configuration: 08:04
- Package size: mm2:W x L (PKG): 16PDIP: 181 mm2: 9.4 x 19.3 (PDIP|16)
- Bits (#): 8
- Digital input leakage (Max (uA): 5
- ESD CDM (kV): 0.75
- ESD HBM (kV): 2
Top Features:
- Converts from 1 of 8 to binary
- Cascading feature for handling any number of inputs
- Group select indicates priority inputs
- Standardized, symmetrical output characteristics
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 include Priority encoder, Binary or BCD encoder (keyboard encoding), and Floating point arithmetic.
Related Document: CD4532 IC Datasheet
* Images are for illustration only; actual product may vary.