HCF4532M013TR

HCF4532B 8-BIT PRIORITY ENCODER ■ ■ ■ ■ ■ ■ ■ ■ ■ CONVERTS FROM 1 TO 8 TO INPUTS BINARY PROVIDES CASCADING FEATURE TO HANDLE ANY NUMBER OF INPUTS GROUP SELECT INDICATES ONE OR MORE PRIORITY INPUTS QUIESCENT CURRENT SPECIFIED UP TO 20V STANDARDIZED SYMMETRICAL OUTPUT CHARACTERISTICS 5V, 10V AND 15V PARAMETRIC RATINGS INPUT LEAKAGE CURRENT II = 100nA (MAX) AT VDD = 18V TA = 25°C 100% TESTED FOR QUIESCENT CURRENT MEETS ALL REQUIREMENTS OF JEDEC JESD13B "STANDARD SPECIFICATIONS FOR DESCRIPTION OF B SERIES CMOS DEVICES" SOP ORDER CODES PACKAGE TUBE DIP SOP HCF4532BEY HCF4532BM1 ) s t( T&R c u d HCF4532M013TR o r P 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 input is high, EO is low and all cascaded lower order stages are disabled. e t le o s b O - DESCRIPTION HCF4532B is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology available in DIP and SOP packages. HCF4532B consists of a combinational logic that encodes the highest priority input (D7-D0) to a 3-bit binary code. The eight inputs, D7 through D0, ) s ( ct DIP u d o r P e PIN CONNECTION t e l o s b O May 2004 Rev. 2 1/13 HCF4532B Figure 1: Input Equivalent Circuit Table 1: Pin Description PIN N° SYMBOL 10, 11, 12, 13, 1, 2, 3, 4 9, 7, 6 NAME AND FUNCTION D0 to D7 Data Inputs 5 Q0 to Q2 EI Chip Enable Input 15 EO Enable Output 14 GS VSS Group Select Line 8 16 VDD Positive Supply Voltage Data Output Lines Negative Supply Voltage Figure 2: Functional Diagram c u d e t le ) s ( ct u d o Table 2: Truth Table EI L H H H H H H H H H D7 t e l o s b O X L H L L L L L L L X : Don’t Care 2/13 r P e ) s t( o r P o s b O - INPUTS OUTPUTS D6 D5 D4 D3 D2 D1 D0 GS Q2 Q1 Q0 EO X L X H L L L L L L X L X X H L L L L L X L X X X H L L L L X L X X X X H L L L X L X X X X X H L L X L X X X X X X H L X L X X X X X X X H L L H H H H H H H H L L H H H H L L L L L L H H L L H H L L L L H L H L H L H L L H L L L L L L L L HCF4532B Figure 3: Logic Diagram c u d e t le ) s ( ct ) s t( o r P o s b O - u d o r P e t e l o Table 3: Absolute Maximum Ratings bs Symbol O VDD Parameter Supply Voltage Value Unit -0.5 to +22 V VI DC Input Voltage -0.5 to VDD + 0.5 V II DC Input Current ± 10 mA 200 100 mW mW Top Power Dissipation per Package Power Dissipation per Output Transistor Operating Temperature -55 to +125 °C Tstg Storage Temperature -65 to +150 °C PD Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. All voltage values are referred to VSS pin voltage. 3/13 HCF4532B Table 4: Recommended Operating Conditions Symbol VDD Parameter Supply Voltage VI Input Voltage Top Operating Temperature Value Unit 3 to 20 V 0 to VDD V -55 to 125 °C Table 5: DC Specifications Test Condition Symbol IL Parameter VOH Quiescent Current VI (V) 0/5 0/10 0/15 0/20 0/5 0/10 0/15 5/0 10/0 15/0 High Level Output Voltage VOL Low Level Output Voltage VIH High Level Input Voltage VIL Low Level Input Voltage IOH Output Drive Current IOL II Output Sink Current t e l o CI s b O 0/5 0/5 0/10 0/15 0/5 0/10 0/15 0.5/4.5 1/9 1.5/13.5 4.5/0.5 9/1 13.5/1.5 2.5 4.6 9.5 13.5 0.4 0.5 1.5 0/18 |IO| VDD (µA) (V)