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參數資料
| 型號： | MM54HCT193J |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | SWITCH |
| 中文描述： | HCT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, CDIP16 |
| 封裝： | CERAMIC, DIP-16 |
| 文件頁數： | 5/9頁 |
| 文件大小： | 146K |
| 代理商： | MM54HCT193J |
Logic Waveforms
’HCT193 Synchronous Binary Counters
Typical Clear, Load, and Count Sequences
TL/F/5742–3
Sequence:
(1) Clear outputs to zero.
(2) Load (preset) to binary thirteen
(3) Count up to fourteen, fifteen, carry, zero, one, and two.
(4) Count down to one, zero, borrow, fifteen, fourteen, and thirteen.
Note A:
Clear overrides load data, and count inputs.
Note B:
When counting up, count-down input must be high; when counting down, count-up input must be high.
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