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參數資料
| 型號： | MC54HC164 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 8-Bit Serial-Input/Parallel-Output Shift Register |
| 中文描述： | 8位Serial-Input/Parallel-Output移位寄存器 |
| 文件頁數： | 4/7頁 |
| 文件大小： | 204K |
| 代理商： | MC54HC164 |
MC54/74HC164
MOTOROLA
High–Speed CMOS Logic Data
DL129 — Rev 6
3–4
PIN DESCRIPTIONS
INPUTS
A1, A2 (Pins 1, 2)
Serial Data Inputs. Data at these inputs determine the data
to be entered into the first stage of the shift register. For a
high level to be entered into the shift register, both A1 and A2
inputs must be high, thereby allowing one input to be used as
a data–enable input. When only one serial input is used, the
other must be connected to VCC.
Clock (Pin 8)
Shift Register Clock. A positive–going transition on this pin
shifts the data at each stage to the next stage. The shift
register is completely static, allowing clock rates down to DC
in a continuous or intermittent mode.
OUTPUTS
QA – QH (Pins 3, 4, 5, 6, 10, 11, 12, 13)
Parallel Shift Register Outputs. The shifted data is pres-
ented at these outputs in true, or noninverted, form.
CONTROL INPUT
Reset (Pin 9)
Active–Low, Asynchronous Reset Input. A low voltage ap-
plied to this input resets all internal flip–flops and sets Out-
puts QA – QH to the low level state.
SWITCHING WAVEFORMS
tf
VCC
GND
90%
50%
10%
tw
tPLH
tPHL
CLOCK
Q
tTLH
tTHL
Figure 1.
RESET
trec
Figure 2.
A1 OR A2
Figure 3.
tr
1/fmax
90%
50%
10%
VCC
GND
VCC
GND
Q
CLOCK
50%
50%
50%
tPHL
tw
VCC
GND
VCC
GND
50%
50%
CLOCK
tsu
th
VALID
* Includes all probe and jig capacitance
CL*
TEST POINT
DEVICE
UNDER
TEST
OUTPUT
Figure 4. Test Circuit
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| MC54HC164AJ | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-Bit Serial-Input/Parallel-Output Shift Register |
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