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參數(shù)資料
| 型號(hào)： | MM54C923 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 20-Key Encoder(20鍵編碼器) |
| 中文描述： | 20鍵編碼器（20鍵編碼器） |
| 文件頁(yè)數(shù)： | 5/10頁(yè) |
| 文件大小： | 218K |
| 代理商： | MM54C923 |
Typical Performance Characteristics
Typical I
rp
vs V
IN
at
Any Y Input
TL/F/6037–6
Typical R
on
vs V
OUT
at
Any X Output
TL/F/6037–7
Typical F
SCAN
vs C
OSC
TL/F/6037–8
Typical Debounce Period
vs C
KBM
TL/F/6037–9
Typical Applications
Synchronous Handshake (MM74C922)
TL/F/6037–10
Synchronous Data Entry Onto Bus (MM74C922)
TL/F/6037–11
Outputs are enabled when valid entry is made and
go into TRI-STATE when key is released.
Note 3:
The keyboard may be synchronously scanned by omitting the capacitor at osc. and driving osc. directly if the system clock rate is lower than 10 kHz.
5
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| MM54C932 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Phase Comparator |
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| MM54C93N | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:4-Bit Decade, Binary Counter |
| MM54C941 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Octal Buffers/Line Receivers/ Line Drivers with TRI-STATE Outputs |
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