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PDF 74LS47 Data sheet ( Hoja de datos )
| Número de pieza | 74LS47 | |
| Descripción | BCD to 7-Segment Decoder/Driver with Open-Collector Outputs | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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October 1988
Revised March 2000
DM74LS47
BCD to 7-Segment Decoder/Driver with
Open-Collector Outputs
General Description
The DM74LS47 accepts four lines of BCD (8421) input
data, generates their complements internally and decodes
the data with seven AND/OR gates having open-collector
outputs to drive indicator segments directly. Each segment
output is guaranteed to sink 24 mA in the ON (LOW) state
and withstand 15V in the OFF (HIGH) state with a maxi-
mum leakage current of 250 µA. Auxiliary inputs provided
blanking, lamp test and cascadable zero-suppression func-
tions.
Features
s Open-collector outputs
s Drive indicator segments directly
s Cascadable zero-suppression capability
s Lamp test input
Ordering Code:
Order Number Package Number
Package Description
DM74LS47M
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
DM74LS47N
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
VCC = Pin 16
GND = Pin 8
Pin Descriptions
Pin Names
Description
A0–A3
BCD Inputs
RBI Ripple Blanking Input (Active LOW)
LT Lamp Test Input (Active LOW)
BI/RBO
Blanking Input (Active LOW) or
Ripple Blanking Output (Active LOW)
a –g Segment Outputs (Active LOW) (Note 1)
Note 1: OC—Open Collector
© 2000 Fairchild Semiconductor Corporation DS009817
www.fairchildsemi.com
1 page  
Physical Dimensions inches (millimeters) unless otherwise noted
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
Package Number M16A
5 www.fairchildsemi.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet 74LS47.PDF ] | |
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