DM5447A National Semiconductor, DM5447A Datasheet

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DM5447A

Manufacturer Part Number
DM5447A
Description
BCD to 7-Segment Decoders/Drivers
Manufacturer
National Semiconductor
Datasheet

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Part Number:
DM5447AJ
Quantity:
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Part Number:
DM5447AW
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C 1995 National Semiconductor Corporation
DM7446A DM5447A DM7447A
BCD to 7-Segment Decoders Drivers
General Description
The 46A and 47A feature active-low outputs designed for
driving common-anode LEDs or incandescent indicators di-
rectly All of the circuits have full ripple-blanking input out-
put controls and a lamp test input Segment identification
and resultant displays are shown on a following page Dis-
play patterns for BCD input counts above nine are unique
symbols to authenticate input conditions
All of the circuits incorporate automatic leading and or trail-
ing-edge zero-blanking control (RBI and RBO) Lamp test
(LT) of these devices may be performed at any time when
the BI RBO node is at a high logic level All types contain
Connection Diagram
TL F 6518
Order Number DM5447AJ DM7446AN or DM7447AN
See NS Package Number J16A or N16E
Dual-In-Line Package
an overriding blanking input (BI) which can be used to con-
trol the lamp intensity (by pulsing) or to inhibit the outputs
Features
Y
Y
Y
Y
All circuit types feature lamp intensity modulation
capability
Open-collector outputs drive indicators directly
Lamp-test provision
Leading trailing zero suppression
TL F 6518 – 1
RRD-B30M105 Printed in U S A
June 1989

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DM5447A Summary of contents

Page 1

... RBO) Lamp test (LT) of these devices may be performed at any time when the BI RBO node high logic level All types contain Connection Diagram Order Number DM5447AJ DM7446AN or DM7447AN See NS Package Number J16A or N16E C 1995 National Semiconductor Corporation TL F 6518 ...

Page 2

... Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage Input Voltage Operating Free Air Temperature Range DM54 DM74 Storage Temperature Range Recommended Operating Conditions ...

Page 3

... Note 1 All typicals are Note measured with all outputs open and all inputs Conditions Min 120 e L DM5447A Min Nom Max Min 125 0 ...

Page 4

Switching Characteristics and (See Section 1 for Test Waveforms and Output Load Symbol Parameter t Propagation Delay Time PLH Low to High Level Output t Propagation Delay Time PHL ...

Page 5

... Logic Diagram Physical Dimensions inches (millimeters) 16-Lead Ceramic Dual-In-Line Package (J) Order Number DM5447AJ NS Package Number J16A 6518– 2 ...

Page 6

... Hong Kong Ltd 49) 0-180-530 85 86 13th Floor Straight Block a Ocean Centre 5 Canton Rd 49) 0-180-530 85 85 Tsimshatsui Kowloon a Tel ( 49) 0-180-532 78 32 Hong Kong a 49) 0-180-532 93 58 Tel (852) 2737-1600 a Tel ( 49) 0-180-534 16 80 Fax (852) 2736-9960 a National Semiconductor Japan Ltd Tel 81-043-299-2309 Fax 81-043-299-2408 ...

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