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74F646BSPC PDF预览

74F646BSPC

更新时间: 2024-11-08 22:37:03
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD /
页数 文件大小 规格书
9页 81K
描述
Octal Transceiver/Register with 3-STATE Outputs

74F646BSPC 数据手册

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March 1988  
Revised August 1999  
74F646 • 74F646B • 74F648  
Octal Transceiver/Register with 3-STATE Outputs  
General Description  
Features  
These devices consist of bus transceiver circuits with 3-  
STATE, D-type flip-flops, and control circuitry arranged for  
multiplexed transmission of data directly from the input bus  
or from the internal registers. Data on the A or B bus will be  
clocked into the registers as the appropriate clock pin goes  
to a high logic level. Control G and direction pins are pro-  
vided to control the transceiver function. In the transceiver  
mode, data present at the high impedance port may be  
stored in either the A or the B register or in both. The select  
controls can multiplex stored and real-time (transparent  
mode) data. The direction control determines which bus  
will receive data when the enable control G is Active LOW.  
In the isolation mode (control G HIGH), A data may be  
stored in the B register and/or B data may be stored in the  
A register.  
Independent registers for A and B buses  
Multiplexed real-time and stored data  
74F648 has inverting data paths  
74F646/74F646B have non-inverting data paths  
74F646B is a faster version of the 74F646  
3-STATE outputs  
300 mil slim DIP  
Ordering Code:  
Order Number Package Number  
Package Description  
74F646SC  
M24B  
MSA24  
N24C  
M24B  
N24C  
M24B  
N24C  
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide  
24-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide  
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-100, 0.300 Wide  
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide  
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-100, 0.300 Wide  
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide  
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-100, 0.300 Wide  
74F646MSA  
74F646SPC  
74F646BSC  
74F646BSPC  
74F648SC  
74F648SPC  
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.  
© 1999 Fairchild Semiconductor Corporation  
DS009580  
www.fairchildsemi.com  

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