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54LS49 데이터시트 PDF




National Semiconductor에서 제조한 전자 부품 54LS49은 전자 산업 및 응용 분야에서
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부품번호 54LS49 기능
기능 BCD to 7-Segment Decoder
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54LS49 데이터시트, 핀배열, 회로
54LS49 BCD to 7-Segment Decoder
General Description
The 54LS49 translates four lines of BCD (8421) input data
into the 7-segment numeral code as shown in the Function
Table It has open-collector outputs and is logically the 14-
pin verson of the ’48 without the lamp test and ripple blank-
ing features Also see the ’LS249 data sheet
Connection Diagram
Dual-In-Line Package
Logic Symbol
June 1989
TL F 10204 – 1
Order Number 54LS49DMQB or 54LS49FMQB
See NS Package Number J14A or W14B
VCC e Pin 14
GND e Pin 7
Pin Names
A0 – A3
BI
a–g
Description
BCD Inputs
Blanking Input (Active LOW)
Segment Outputs (Active HIGH)
Numerical Designations Resultant Displays
TL F 10204 – 2
TL F 10204 – 3
C1995 National Semiconductor Corporation TL F 10204
RRD-B30M105 Printed in U S A




54LS49 pdf, 반도체, 판매, 대치품
Physical Dimensions inches (millimeters)
14-Lead Ceramic Dual-In-Line Package (J)
Order Number 54LS49DMQB
NS Package Number J14A
14-Lead Ceramic Flat Package (W)
Order Number 54LS49FMQB
NS Package Number W14B
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION As used herein
1 Life support devices or systems are devices or
systems which (a) are intended for surgical implant
into the body or (b) support or sustain life and whose
failure to perform when properly used in accordance
with instructions for use provided in the labeling can
be reasonably expected to result in a significant injury
to the user
2 A critical component is any component of a life
support device or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system or to affect its safety or
effectiveness
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National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications

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