SA556D STMicroelectronics, SA556D Datasheet - Page 9

• Manufacturer Part Number: SA556D
• Description: IC TIMER DUAL BIPOLAR GP 14-SOIC
• Manufacturer: STMicroelectronics
• Type: 555 Type, Timer/Oscillator (Dual)r

Specifications of SA556D

• Frequency: 500kHz
• Voltage - Supply: 4.5 V ~ 16 V
• Current - Supply: 20mA
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Operating Mode: Astable / Monostable
• No. Of Timers: 2
• Clock External Input: No
• Supply Voltage Range: 4.5V To 16V
• Digital Ic Case Style: SOIC
• No. Of Pins: 14
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Count: -

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. The second timer is enabled by the high
output or the monostable. It is connected as an astable and determines the frequency of the
tone.
Figure 15. Monostable operation
t
D
d
t
d
V
tp t
V
t
tp t
t
tp t
t
Application information
d
D
t
d
d
V
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