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參數資料
| 型號： | MC74HC165D |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | 8-Bit Serial or Parallel-Input/Serial-Output Shift Register |
| 中文描述： | HC/UH SERIES, 8-BIT RIGHT PARALLEL IN SERIAL OUT SHIFT REGISTER, COMPLEMENTARY OUTPUT, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SOIC-16 |
| 文件頁數： | 5/9頁 |
| 文件大小： | 280K |
| 代理商： | MC74HC165D |
MC54/74HC165A
High–Speed CMOS Logic Data
DL129 — Rev 6
5
MOTOROLA
PIN DESCRIPTIONS
INPUTS
A, B, C, D, E, F, G, H (Pins 11, 12, 13, 14, 3, 4, 5, 6)
Parallel Data inputs. Data on these inputs are asynchro-
nously entered in parallel into the internal flip–flops when the
Serial Shift/Parallel Load input is low.
SA (Pin 10)
Serial Data input. When the Serial Shift/Parallel Load input
is high, data on this pin is serially entered into the first stage
of the shift register with the rising edge of the Clock.
CONTROL INPUTS
Serial Shift/Parallel Load (Pin 1)
Data–entry control input. When a high level is applied to
this pin, data at the Serial Data input (SA) are shifted into the
register with the rising edge of the Clock. When a low level is
applied to this pin, data at the Parallel Data inputs are
asynchronously loaded into each of the eight internal stages.
Clock, Clock Inhibit (Pins 2, 15)
Clock inputs. These two clock inputs function identically.
Either may be used as an active–high clock inhibit. However,
to avoid double clocking, the inhibit input should go high only
while the clock input is high.
The shift register is completely static, allowing Clock rates
down to DC in a continuous or intermittent mode.
OUTPUTS
QH, QH (Pins 9, 7)
Complementary Shift Register outputs. These pins are the
noninverted and inverted outputs of the eighth stage of the
shift register.
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