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Part: HCF40147
Category:
Logic
-> HCF->CMOS 4000B Series
Description: 10 to 4 Line BCD Priority Encoder
Company: ST Microelectronics, Inc.
Datasheet: Download HCF40147 datasheet File size : 4262 kB
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Datasheet text preview:
HCF40147B
10 TO 4 LINE BCD PRIORITY ENCODER
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ENCODES 10 LINE TO 4 LINE BCD ACTIVE LOW INPUTS AND OUTPUTS STAND ARDIZED, SYMMETRICAL OUTPUT CHARACTERIZATION QUIESCENT CURRENT SPECIFIED UP TO 20V 5V, 10V AND 15V PARAMETRIC RATINGS MAXIMUM INPUT CURRENT OF 1 µA AT 18V OVER FULL PACKAGE TEMPERATURE RANGE; 100 nA AT 18 V AND 25°C N OISE MARGIN (FULL PACKAGE TEMPERATURE RANGE): 1V AT VDD =5V, 2V AT VDD =10V, 2.5V AT VDD = 15V 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"
DIP
SOP
ORDER CODES
PACKAGE DIP SOP TUBE HCF40147BEY HCF40147BM1 T&R HCF40147M013TR
DESCRIPTION HC F40147B is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology available in DIP and SOP packages. HC F40147B, encoder CMOS, features priority encoding of the inputs to ensure that only the
highest order data line is encoded. Ten data input lines (0-9) are encoded to four line (8, 4, 2, 1) BCDs. The highest priority line is line 9. All four output lines are logic "1" (VSS) when all input lines are logic "0". All inputs and outputs are buffered, and each output can drive one TTL Low Power Schottky load. HCF40147B is functionally similar to the T54/T74LS147 if pin 15 is tied low. HC F40147B is supplied in 16-lead plastic or ceramic and plastic micropackages.
PIN CONNECTION
September 2002
1/8
HCF40147B
IINPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No 9, 7, 6, 14 11, 12, 13, 1, 2, 3, 4, 5, 10 15 8 16 SYMBOL A to D 1 to 9 0 VSS V DD NAME AND FUNCTION BCD Address Outputs (Active LOW) Decimal data Inputs (Active LOW) Not Connected Negative Supply Voltage Positive Supply Voltage
TRUTH TABLE I NP UT
0 L H X X X X X X X X X 1 L L H X X X X X X X X 2 L L L H X X X X X X X 3 L L L L H X X X X X X 4 L L L L L H X X X X X 5 L L L L L L H X X X X 6 L L L L L L L H X X X 7 L L L L L L L L H X X 8 L L L L L L L L L H X 9 L L L L L L L L L L H D H L L L L L L L L H H
OUTPUTS
C H L L L L H H H H L L B H L L H H L L H H L L A H L H L H L H L H L H
X : Don't Care
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HCF40147B
LOGIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol V DD VI II PD Top Tstg Supply Voltage DC Input Voltage DC Input Current Power Dissipation per Package Power Dissipation per Output Transistor Operating Temperature Storage Temperature Parameter Value -0.5 to +22 -0.5 to VDD + 0.5 ± 10 200 100 -55 to +125 -65 to +150 Unit V V mA mW mW °C °C
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.
RECOMMENDED OPERATING CONDITIONS
Symbol V DD VI Top Supply Voltage Input Voltage Operating Temperature Parameter Value 3 to 20 0 to VDD -55 to 125 Unit V V °C 3/8
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