TIMER. SE555-SP Datasheet

SE555-SP Datasheet PDF


Part

SE555-SP

Description

QML CLASS V PRECISION TIMER

Manufacture

etcTI

Page 19 Pages
Datasheet
Download SE555-SP Datasheet


SE555-SP Datasheet
SE555-SP
www.ti.com
QML CLASS V PRECISION TIMER
Check for Samples: SE555-SP
SGLS401 – FEBRUARY 2010
FEATURES
1
• Timing From Microseconds to Hours
• Astable or Monostable Operation
• Adjustable Duty Cycle
• TTL-Compatible Output Can Sink or Source up
to 100 mA
• QML-V Qualified, SMD 5962-98555
• Military Temperature Range (-55°C to 125°C)
• Rad-Tolerant: 25 kRad (Si) TID (1)
(1) Radiation tolerance is a typical value based upon initial device
qualification with dose rate = 10 mrad/sec. Radiation Lot
Acceptance Testing is available - contact factory for details.
JG PACKAGE
(TOP VIEW)
GND
TRIG
OUT
RESET
1
2
3
4
8
V
CC
7 DISCH
6 THRES
5 CONT
DESCRIPTION/ORDERING INFORMATION
The SE555 is a precision timing circuit capable of producing accurate time delays or oscillation. In the time-delay
or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor
network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with two
external resistors and a single external capacitor.
The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC. These levels can be
altered by use of the control-voltage terminal. When the trigger input falls below the trigger level, the flip-flop is
set, and the output goes high. If the trigger input is above the trigger level and the threshold input is above the
threshold level, the flip-flop is reset and the output is low. The reset (RESET) input can override all other inputs
and can be used to initiate a new timing cycle. When RESET goes low, the flip-flop is reset, and the output goes
low. When the output is low, a low-impedance path is provided between discharge (DISCH) and ground.
The output circuit is capable of sinking or sourcing current up to 100 mA. Operation is specified for supplies of
4.5 V to 16.5 V. With a 5-V supply, output levels are compatible with TTL inputs.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010, Texas Instruments Incorporated

SE555-SP Datasheet
SE555-SP
SGLS401 – FEBRUARY 2010
www.ti.com
TA
–55°C to 125°C
ORDERING INFORMATION(1)
PACKAGE (2)
ORDERABLE PART NUMBER
CDIP - JG
Tube of 50
5962-9855501VPA
TOP-SIDE MARKING
5962-9855501VPA
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
RESET
Low
High
High
High
Table 1. FUNCTION TABLE
TRIGGER
VOLTAGE (1)
Irrelevant
<1/3 VCC
>1/3 VCC
>1/3 VCC
THRESHOLD
VOLTAGE (1)
Irrelevant
Irrelevant
>2/3 VCC
<2/3 VCC
OUTPUT
DISCHARGE
SWITCH
Low On
High
Off
Low On
As previously established
(1) Voltage levels shown are nominal.
FUNCTIONAL BLOCK DIAGRAM
VCC
8 CONT
6
THRES
5 ÎÎÎÎ
RESET
4
ÎÎÎ R1
R
S
1ÎÎÎ
ÎÎÎ
2
TRIG
ÎÎÎ
3
OUT
1
GND
A. RESET can override TRIG, which can override THRES.
7
DISCH
2 Submit Documentation Feedback
Product Folder Link(s): SE555-SP
Copyright © 2010, Texas Instruments Incorporated


Features Datasheet pdf SE555-SP www.ti.com QML CLASS V PRECIS ION TIMER Check for Samples: SE555-SP SGLS401 – FEBRUARY 2010 FEATURES 1 Timing From Microseconds to Hours Astable or Monostable Operation • A djustable Duty Cycle • TTL-Compatible Output Can Sink or Source up to 100 mA • QML-V Qualified, SMD 5962-98555 Military Temperature Range (-55°C to 125°C) • Rad-Tolerant: 25 kRad (Si) TID (1) (1) Radiation tolerance is a t ypical value based upon initial device qualification with dose rate = 10 mrad/ sec. Radiation Lot Acceptance Testing i s available - contact factory for detai ls. JG PACKAGE (TOP VIEW) GND TRIG OU T RESET 1 2 3 4 8 V CC 7 DISCH 6 T HRES 5 CONT DESCRIPTION/ORDERING INFO RMATION The SE555 is a precision timing circuit capable of producing accurate time delays or oscillation. In the time -delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be co.
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