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74ACT399SCQR PDF预览

74ACT399SCQR

更新时间: 2024-11-15 19:58:07
品牌 Logo 应用领域
德州仪器 - TI 光电二极管逻辑集成电路触发器
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10页 187K
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74ACT399SCQR 数据手册

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October 1993  
74AC399 54ACT/74ACT399  
#
Quad 2-Port Register  
General Description  
The ’AC/ACT399 is the logical equivalent of a quad 2-input  
Features  
Y
CC  
I
reduced by 50%  
Y
Y
Y
Y
multiplexer feeding into four edge-triggered flip-flops.  
A
Select inputs from two data sources  
Fully positive edge-triggered operation  
Outputs source/sink 24 mA  
common Select input determines which of the two 4-bit  
words is accepted. The selected data enters the flip-flop on  
the rising edge of the clock.  
’ACT/ACT399 has TTL-compatible inputs  
Logic Symbols  
Connection Diagrams  
Pin Assignment  
for DIP, Flatpak and SOIC  
TL/F/9789–1  
IEEE/IEC  
TL/F/9789–3  
Pin Assignment  
for LCC  
TL/F/9789–5  
TL/F/9789–2  
Pin Names  
Description  
S
Common Select Input  
Clock Pulse Input  
CP  
I
–I  
0a 0d  
Data Inputs from Source 0  
Data Inputs from Source 1  
Register True Outputs  
I I  
1a 1d  
Q Q  
a
d
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation..  
FACTTM is a trademark of National Semiconductor Corporation.  
C
1995 National Semiconductor Corporation  
TL/F/9789  
RRD-B30M75/Printed in U. S. A.  

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Quad 2-Port Register
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