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CD4028BM Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. CD4028BM
Description  BCD-to-Decimal Decoder
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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CD4028BM Datasheet(HTML) 1 Page - National Semiconductor (TI)

   
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TLF5959
February 1988
CD4028BMCD4028BC BCD-to-Decimal Decoder
General Description
The CD4028BMCD4028BC is a BCD-to-decimal or binary-
to-octal decoder consisting of 4 inputs decoding logic
gates and 10 output buffers A BCD code applied to the 4
inputs A B C and D results in a high level at the selected
1-of-10 decimal decoded outputs Similarly a 3-bit binary
code applied to inputs A B and C is decoded in octal at
outputs 0 – 7 A high level signal at the D input inhibits octal
decoding and causes outputs 0 – 7 to go low
All inputs are protected against static discharge damage by
diode clamps to VDD and VSS
Features
Y
Wide supply voltage range
30V to 15V
Y
High noise immunity
045 VDD (typ)
Y
Low power TTL
fan out of 2 driving 74L
compatibility
or 1 driving 74LS
Y
Low power
Y
Glitch free outputs
Y
‘‘Positive logic’’ on inputs and outputs
Applications
Y
Code conversion
Y
Address decoding
Y
Indicator-tube decoder
Logic and Connection Diagrams
TLF5959 – 1
Dual-In-Line Package
TLF5959 – 2
Top View
Order Number CD4028B
Truth Table
DCBA0123456789
0
0
0
0
1000000000
0
0
0
1
0100000000
0
0
1
0
0010000000
0
0
1
1
0001000000
0
1
0
0
0000100000
BCD States
0
1
0
1
0000010000
0
1
1
0
0000001000
1 e High Level
0
1
1
1
0
0
0
0
0
0
0
1
0
0
0 e Low Level
1
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
1
0000000001
-
1
0
1
0
0000000010
1
0
1
1
0000000001
1
1
0
0
0000000010
Extraordinary States
1
1
0
1
0000000001
1
1
1
0
0000000010
1
1
1
1
0000000001
*
C1995 National Semiconductor Corporation
RRD-B30M105Printed in U S A


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