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參數資料
| 型號： | HD74HC592 |
| 廠商： | Hitachi,Ltd. |
| 元件分類： | 通用總線功能 |
| 英文描述： | 8-bit Register/Binary Counter |
| 中文描述： | 8位注冊/二進制計數器 |
| 文件頁數： | 1/9頁 |
| 文件大小： | 62K |
| 代理商： | HD74HC592 |
HD74HC592
8-bit Register/Binary Counter
Description
The HD74HC592 consists of a parallel input, 8-bit storage register feeding an 8-bit binary counter. Both
the register and the counter have individual positive edge-triggered clocks. In addition, the counter has
direct load and clear functions. Expansion is easily accomplished by connecting
RCO
of the first stage to
the count enable of the second stage, etc.
Features
High Speed Operation: t
pd
(CCK to
RCO
) = 24 ns typ (C
L
= 50 pF)
High Output Current: Fanout of 10 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
RCK
CLoad
CCLR
CCKEN
CCK
Function
X
L
H
X
X
Regiater data loaded into counter
X
H
L
X
X
Counter clear
H
H
X
X
Input data A to H stored into register
H
H
X
X
No change in register
X
H
H
L
Count up
X
H
H
L
No count
X
H
H
H
X
No cont
RCO
= QA’QB’QC’QD’QE’QF’QG’QH’ (
CCKEN
) (QA’ to QH’: Output of Internal Counter)
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