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HCF40147B Schematic ( PDF Datasheet ) - STMicroelectronics

Teilenummer HCF40147B
Beschreibung 10 TO 4 LINE BCD PRIORITY ENCODER
Hersteller STMicroelectronics
Logo STMicroelectronics Logo 




Gesamt 12 Seiten
HCF40147B Datasheet, Funktion
HCC40147B
HCF40147B
10 TO 4 LINE BCD PRIORITY ENCODER
. ENCODES 10 LINE TO 4 LINE BCD
. ACTIVE LOW INPUTS AND OUTPUTS
. STANDARDIZED, SYMMETRICAL OUTPUT
CHARACTERIZATION
. 100 % TESTED FOR QUIESCENT CURRENT
AT 20 V
. 5V, 10V AND 15V PARAMETRIC RATINGS
. MAXIMUM INPUT CURREENT OF 1 µA AT 18V
. OVER FULL PACKAGE TEMPERATURE
RANGE; 100 nA AT 18 V AND 25 oC
NOISE MARGIN (FULL PACKAGE TEMPERA-
TURE RANGE): 1V AT VDD = 5V, 2V AT
VDD = 10V, 2.5V AT VDD = 15V
...APPLICATIONS:
KEYBOARD ENCODING
10 LINE TO BCD ENCODING
RANGE SELECTION
EY
(Plastic Package)
M1
(Micro Package)
F
(Ceramic Package)
C1
(Chip Carrier)
ORDER CODES :
HCC40147BF
HCF40147BM1
HC F 4 0147 BE Y
HCF40147BC1
PIN CONNECTIONS
DESCRIPTION
The HCC/HCF40147B CMOS encoder 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) BCD.
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. The
HCC/HCFF40147 is functionally similar to the
T54/T74LS147 if pin 15 is tied low.
The HCC/HCF40147B types are supplied in 16 lead
plastic or ceramic and plastic micropackage.
April 1991
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HCF40147B Datasheet, Funktion
HCC/HCF40147B
Propagation Delay Time vs Load Capacitance
Tipical Transition Time vs Load Capacitance
Typical Dynamic Power Dissipation vs Input Fre-
quency
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HCF40147B pdf, datenblatt
HCC/HCF40147B
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronics products are not authorized for use ascritical components in life support devices or systems without express
written approval of SGS-THOMSON Microelectonics.
© 1994 SGS-THOMSON Microelectronics - All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands -
Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A
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