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HD74HC195 データシートの表示(PDF) - Hitachi -> Renesas Electronics

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HD74HC195
Hitachi
Hitachi -> Renesas Electronics Hitachi
HD74HC195 Datasheet PDF : 9 Pages
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HD74HC195
4-bit Parallel-Access Shift Register
Description
This shift register features parallel inputs, parallel outputs, J-K serial inputs, Shift/Load control input, and a
direct overriding clear. This shift register can operate in two modes: Parallel load; shift from QA towards
QD.
Paralle loading is accomplished by applying the four bits of data, and taking the Shift/Load control Input
low. The data is loaded into the associated flip-flops and appears at the outputs after the positive transition
of the clock input. During parallel loading, serial data flow is inhibited. Serial shifting occurs
synchronously when the Shift/Load control input is high. Serial data for this mode is entered at the J-K
inputs. These inputs allow the first stage to perform as a J-K or toggle flip-flop as shown in the function
table.
Features
High Speed Operation: tpd (Clock to Q) = 13 ns typ (CL = 50 pF)
High Output Current: Fanout of 10 LSTTL Loads
Wide Operating Voltage: VCC = 2 to 6 V
Low Input Current: 1 µA max
Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)

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