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The BU4021B and BU4021BF are 8-bit static shift registers consisting of 8 register cells, each of which has parallel input. Control of the parallel / serial control input (P / S) enables serial input / serial output with clock synchronization, as well as parallel input / serial output conversions.
BU4021B Maximum Ratings
Parameter
Symbol
Limits
Unit
Power supply voltage
VDD
0.3 ~ + 18
V
Power dissipation
Pd
1000 (DIP), 500 (SOP)
mW
Operating temperature
Topr
40 ~ + 85
Storage temperature
Tstg
55 ~ + 150
Input voltage
VIN
0.3 ~ VDD + 0.3
V
BU4021B Connection Diagram
BU4021BF General Description
The BU4021B and BU4021BF are 8-bit static shift registers consisting of 8 register cells, each of which has parallel input. Control of the parallel / serial control input (P / S) enables serial input / serial output with clock synchronization, as well as parallel input / serial output conversions.