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SA555 Datasheet(PDF) 2 Page - Diodes Incorporated

Part # SA555
Description  Timing from microseconds to hours
PDF  14 Pages
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

SA555 Datasheet(HTML) 2 Page - Diodes Incorporated

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NE555/SA555/NA555
PRECISION TIMERS
NE555/SA555/NA555
Document number: DS35112 Rev. 4 - 2
2 of 14
www.diodes.com
February 2012
© Diodes Incorporated
Pin Descriptions
Pin Name
Pin Number
Description
GND
1
Ground
TRIG
2
Trigger set 1/3VCC
OUT
3
Timer output
RESET
4
Reset active low
CONT
5
External adjustment of internal threshold and trigger voltages
THRES
6
Threshold set to 2/3 VCC
DISCH
7
Low impedance discharge path
VCC
8
Chip supply voltage
Functional Block Diagram
RESET can override TRIG, which can override THRESH
Functional Table
Pin Name
Nominal Trigger
Voltage
Threshold
Voltage
Output
Discharge
Switch
GND
Irrelevant
Irrelevant
Low
On
TRIG
<1/3VCC
Irrelevant
High
Off
OUT
<1/3VCC
<2/3VCC
Low
On
RESET
<1/3VCC
<2/3VCC
As previously established



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