NA555DR ,Precision Timers 8-SOIC -40 to 105Features 3 DescriptionThese devices are precision timing circuits capable of1• Timing From Microsec ..
NA556DR ,Dual Precision Timers 14-SOIC -40 to 105maximum ratings" may cause permanent damage to the device. These are stress ratingsonly, and functi ..
NA556DR ,Dual Precision Timers 14-SOIC -40 to 105FEATURESNA556...D OR N PACKAGE• Two Precision Timing Circuits Per Package NE556...D, N, OR NS PACKA ..
NA556DRG4 ,Dual Precision Timers 14-SOIC -40 to 105SLFS023G–APRIL 1978–REVISED JUNE 2006ORDERING INFORMATIONV (MAX)T (1)T PACKAGE ORDERABLE PART NUMBE ..
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NA555DR
Precision Timers 8-SOIC -40 to 105
THRES
VCC
CONT
RESET8 anda single external capacitor.All Parameters Are Tested Unless Otherwise
The threshold and trigger levels are two-Noted. OnAll Other Products, Production thirds and one-third, respectively, TheseProcessing Does Not Necessarily Include levels can be altered by useTestingofAll Parameters. terminal. When the trigger input trigger
level, the flip-flopis set, and the high.If
2 Applications the trigger inputis above the and the Fingerprint Biometrics threshold inputis above the threshold the flip-
flopis reset and the outputis low. (RESET)• Iris Biometrics input can overrideall other inputs usedto• RFID Reader initiatea new timing cycle. When low,
the flip-flopis reset, and the output When
the outputis low,a low-impedance provided
between discharge (DISCH) and
The output circuitis capableof sourcing
current up to 200 mA. Operation for
suppliesof5Vto 15V. With output
Simplified Schematic
