IC TIMER DUAL BIPOLAR 14 SOIC

SA556DT

Manufacturer Part NumberSA556DT
DescriptionIC TIMER DUAL BIPOLAR 14 SOIC
ManufacturerSTMicroelectronics
Type555 Type, Timer/Oscillator (Dual)
SA556DT datasheet
 

Specifications of SA556DT

Frequency500kHzVoltage - Supply4.5 V ~ 16 V
Current - Supply20mAOperating Temperature-40°C ~ 105°C
Package / Case14-SOIC (3.9mm Width), 14-SOLNumber Of Internal Timers2
Supply Voltage (max)16 VSupply Voltage (min)4.5 V
Maximum Operating Temperature+ 105 CMinimum Operating Temperature- 40 C
Mounting StyleSMD/SMTLead Free Status / RoHS StatusLead free / RoHS Compliant
Count-Other names497-2037-2
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Features
Low turn-off time
Maximum operating frequency greater than
500 kHz
Timing from microseconds to hours
Operates in both astable and monostable
modes
Output can source or sink up to 200 mA
Adjustable duty cycle
TTL compatible
Temperature stability of 0.005% per °C
Description
The NE556, SA556 and SE556 dual monolithic
timing circuits are highly stable controllers
capable of producing accurate time delays or
oscillation. In the time delay mode of operation,
the time is precisely controlled by one external
resistor and capacitor. For a stable operation as
an oscillator, the free running frequency and the
duty cycle are both accurately controlled with two
external resistors and one capacitor.
The circuits may be triggered and reset on falling
waveforms, and the output structure can source
or sink up to 200 mA.
January 2009
SA556 - SE556
General-purpose dual bipolar timers
DIP14
(Plastic package)
SO14
(Plastic micropackage)
Pin connections
(top view)
Rev 2
NE556
N
D
1/16
www.st.com
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SA556DT Summary of contents

  • Page 1

    Features ■ Low turn-off time ■ Maximum operating frequency greater than 500 kHz ■ Timing from microseconds to hours ■ Operates in both astable and monostable modes ■ Output can source or sink up to 200 mA ■ Adjustable duty ...

  • Page 2

    Schematic diagrams 1 Schematic diagrams Figure 1. Block diagram Figure 2. Schematic diagram 2/ NE556 - SA556 - SE556 D D ...

  • Page 3

    NE556 - SA556 - SE556 2 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings Symbol OUT R thja R thjc ESD T LEAD stg 1. Short-circuits can cause excessive heating. These ...

  • Page 4

    Electrical characteristics 3 Electrical characteristics Table +25° amb Symbol Parameter Supply current (RL ∝ timers) Low state High State V CC Timing error (monostable 2kΩ ...

  • Page 5

    NE556 - SA556 - SE556 Table +25° amb Symbol Parameter Discharge pin leakage current (output high) I dis(off 10V) dis Discharge pin saturation voltage (output low +15V 15mA ...

  • Page 6

    Electrical characteristics Figure 3. Minimum pulse width required for triggering Figure 5. Delay time versus temperature Figure 7. Low output voltage versus output sink current 6/16 NE556 - SA556 - SE556 Figure 4. Supply current versus supply voltage Figure 6. ...

  • Page 7

    NE556 - SA556 - SE556 Figure 9. High output voltage drop versus output Figure 11. Propagation delay versus voltage level of trigger value Electrical characteristics Figure 10. Delay time versus supply voltage 7/16 ...

  • Page 8

    Application information 4 Application information 4.1 Typical application Figure 12. 50% duty cycle oscillator t = 0.693 [(RARB)/(RA+RB)]CLn ---------------- - RB < ...

  • Page 9

    NE556 - SA556 - SE556 Figure 14. Tone burst generator For a tone burst generator the first timer is used as a monostable and determines the tone duration when triggered by a positive pulse at pin 6. ...

  • Page 10

    Application information Figure 16. Astable operation t = 0.693 ( 0.693 R C output low 2 B 10/ output high NE556 - SA556 - SE556 f ...

  • Page 11

    NE556 - SA556 - SE556 5 Package information In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are ...

  • Page 12

    Package information 5.1 DIP14 package information Figure 17. DIP14 package mechanical drawing Table 4. DIP14 package mechanical data Ref Note: D and E1 dimensions do not ...

  • Page 13

    NE556 - SA556 - SE556 5.2 SO-14 package information Figure 18. SO-14 package mechanical drawing Table 5. SO-14 package mechanical data Ref ddd Note: D and F dimensions ...

  • Page 14

    Ordering information 6 Ordering information Table 6. Order codes Part number NE556N NE556D/DT SA556N SA556D/DT SE556N SE556D/DT 14/16 Temperature range Package DIP14 0°C, +70°C SO-14 DIP14 -40°C, +105°C SO-14 DIP14 -55°C, + 125°C SO-14 NE556 - SA556 - SE556 Packing ...

  • Page 15

    NE556 - SA556 - SE556 7 Revision history Table 7. Document revision history Date 01-Jun-2003 27-Jan-2009 Revision 1 Initial release. Document reformatted. Added I value in OUT Table 2: Operating conditions. 2 Added ESD tolerance, latch-up tolerance, R Table 1: ...

  • Page 16

    ... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...