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CD4028BCN Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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CD4028BCN Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 4 page 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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