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PDF HD74HC95 Data sheet ( Hoja de datos )
| Número de pieza | HD74HC95 | |
| Descripción | 4-bit Parallel Access Shift Register | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD74HC95
4-bit Parallel Access Shift Register
Description
This 4-bit register features parallel and serial inputs, parallel outputs, mode control, and two clock inputs.
The register has three mode operation:
• Parallel (broadside) load
• Shift right (the direction QA toward QD)
• Shift left (the direction QD toward QA)
Parallel loading is accomplished by applying the four bits of data and taking the mode conrol input high.
The data is loaded into the associated flip-flops and appears at the outputs after the high-to-low transition of
the clock-2 input. During loading, the entry of serial data is inhibited. Shift right is accomplished on the
high-to-low transition of clock-1 when the mode control is low; shift left is accomplished on the high-to-
low transition of clock-2 when the mode control is high by connecting the output of each flip-flop (QD to
input C, etc.) and serial data is entered at input D. The clock input may be applied commonly to clock-1
and clock-2 if both modes can be clocked from the same source. Changes at the mode control input should
normally be made while both clock inputs are low: however, conditions described in the last three lines of
the function table will also ensure that register contents are protected.
Features
• High Speed Operation: tpd (Clock to Q) = 17 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)
1 page  
19.20
20.32 Max
14
8
1 1.30 7
2.39 Max
Unit: mm
7.62
2.54 ± 0.25
0.48 ± 0.10
0.25
+
–
0.10
0.05
0° – 15°
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
DP-14
Conforms
Conforms
0.97 g
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet HD74HC95.PDF ] | |
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