Datasheet Texas Instruments SN74221NE4 — 数据表




 
 
  
 


  

SDLS213B -DECEMBER 1983 -REVISED NOVEMBER 2004 D Dual Versions of Highly Stable SN54121 D TYPE MAXIMUM
OUTPUT
PULSE
LENGTH(S) SN54221 21 SN74221 28 SN54LS221 49 SN74LS221 70 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 VCC
1Rext/Cext
1Cext
1Q
2Q
2CLR
2B
2A SN54LS221 . FK PACKAGE
(TOP VIEW) 1B
1A
NC
VCC
1R ext /Cext D 1A
1B
1CLR
1Q
2Q
2Cext …