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74184 Datasheet

Part Number 74184
Manufacturers National Semiconductor
Logo National Semiconductor
Description BCD-to-Binary and Binary-to-BCD Converters
Datasheet 74184 Datasheet74184 Datasheet (PDF)

DM74184 DM74185A BCD-to-Binary and Binary-to-BCD Converters June 1989 DM74184 DM74185A BCD-to-Binary and Binary-to-BCD Converters General Description These monolithic converters are derived from the 256-bit read only memories DM5488 and DM7488 Emitter connections are made to provide direct read-out of converted codes at outputs Y8 through Y1 as shown in the function tables These converters demonstrate the versatility of a read only memory in that an unlimited number of reference tables or con.

  74184   74184






Part Number 74189
Manufacturers ETC
Logo ETC
Description 64-Bit RAM
Datasheet 74184 Datasheet74189 Datasheet (PDF)

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  74184   74184







Part Number 74189
Manufacturers Fairchild Semiconductor
Logo Fairchild Semiconductor
Description 64-Bit Random Access Memory
Datasheet 74184 Datasheet74189 Datasheet (PDF)

74F189 64-Bit Random Access Memory with 3-STATE Outputs April 1988 Revised June 2002 74F189 64-Bit Random Access Memory with 3-STATE Outputs General Description The F189 is a high-speed 64-bit RAM organized as a 16word by 4-bit array. Address inputs are buffered to minimize loading and are fully decoded on-chip. The outputs are 3-STATE and are in the high impedance state whenever the Chip Select (CS) input is HIGH. The outputs are active only in the Read mode and the output data is the complem.

  74184   74184







Part Number 74185
Manufacturers ETC
Logo ETC
Description BCD-to-BINARY and BINARY-to-BCD Converters
Datasheet 74184 Datasheet74185 Datasheet (PDF)

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  74184   74184







Part Number 74181
Manufacturers Philips
Logo Philips
Description 4 Bit Arithmetic Logic Unit
Datasheet 74184 Datasheet74181 Datasheet (PDF)

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  74184   74184







BCD-to-Binary and Binary-to-BCD Converters

DM74184 DM74185A BCD-to-Binary and Binary-to-BCD Converters June 1989 DM74184 DM74185A BCD-to-Binary and Binary-to-BCD Converters General Description These monolithic converters are derived from the 256-bit read only memories DM5488 and DM7488 Emitter connections are made to provide direct read-out of converted codes at outputs Y8 through Y1 as shown in the function tables These converters demonstrate the versatility of a read only memory in that an unlimited number of reference tables or conversion tables may be built into a system Both of these converters comprehend that the least significant bits (LSB) of the binary and BCD codes are logically equal and in each case the LSB bypasses the converter as illustrated in the typical applications This means that a 6-bit converter is produced in each case Both devices are cascadable to N bits An overriding enable input is provided on each converter which when taken high inhibits the function causing all outputs to go high For this reason and to minimize power consumption unused outputs Y7 and Y8 of the 185A and all ‘‘don’t care’’ conditions of the 184 are programmed high The outputs are of the open-collector type DM74184 BCD-TO-BINARY CONVERTERS The 6-bit BCD-to-binary function of the DM74184 is analogous to the algorithm a Shift BCD number right one bit and examine each decade Subtract three from each 4-bit decade containing a binary value greater than seven b Shift right examine and correct after each shift until the least si.


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