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參數(shù)資料
| 型號(hào)： | HD74HC674 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 16-bit Shift Register |
| 中文描述： | 16位的移位寄存器 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 44K |
| 代理商： | HD74HC674 |
HD74HC674
16-bit Shift Register
Description
The HD74HC674 is a 16-bit parallel-in, serial-out shift register. A three-state input/output (data I/O) port
provides access for entering serial data or reading the shift-register word in a recirculating loop.
The device has four basic modes of operation:
1. Hold (do nothing)
2. Write (serially via input/output)
3. Read (serially)
4. Load (parallel via data inputs)
Low-to-high-level changes at the chip select input should be made only when the clock input is low to
prevent false clocking.
Features
High Speed Operation: t
pd
(CLK to SER/Q
15
) = 17 ns typ (C
L
= 50 pF)
High Output Current: Fanout of 15 LSTTL Loads
Wide Operating Voltage: V
CC
= 2 to 6 V
Low Input Current: 1 μA max
Low Quiescent Supply Current: I
CC
(static) = 4 μA max (Ta = 25°C)
Function Table
Inputs
CS
R/
W
Mode
CLK
SER/Q
15
Z
Operation
H
X
X
X
Do nothing
L
L
X
Z
Shift and write (serial load)
L
H
L
Q
14n
P
15
Shift and read
L
H
H
Parallel load
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