Details

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BUY SN76489AN https://www.utsource.net/itm/p/12536190.html

Parameter	Symbol	Min	Typical	Max	Unit	Notes
Supply Voltage	Vcc	4.5	5.0	5.5	V
Power Consumption	Icc	-	20	-	mA	@ Vcc = 5V, no sound output
Output Voltage (High)	VOH	2.4	3.5	4.0	V	@ Vcc = 5V, IO = 0.4mA
Output Voltage (Low)	VOL	0.0	0.4	0.5	V	@ Vcc = 5V, IO = 8mA
Input Voltage (High)	VIH	2.0	3.5	5.0	V
Input Voltage (Low)	VIL	0.0	1.5	2.0	V
Input Leakage Current	IIH	-	1.0	-	μA
Output Leakage Current	IOL	-	5.0	-	μA
Operating Temperature	Toper	-40	-	85	°C
Storage Temperature	Tstg	-65	-	150	°C
Clock Frequency	fCLK	500	4000	5000	kHz
Noise Level	N	-	50	-	dB	@ 1kHz, Vcc = 5V
Channel Separation	C	-	40	-	dB	@ 1kHz, Vcc = 5V

Instructions for Use:

1. Power Supply:

   • Connect the Vcc pin to a stable 5V power supply.
   • Ensure the ground (GND) pin is connected to the system ground.

2. Clock Input:

   • Apply a square wave clock signal to the CLK pin. The frequency should be within the specified range (500kHz to 5000kHz).

3. Data Input:

   • Data is written to the SN76489AN via the DATA pin. Ensure that data is synchronized with the clock signal.

4. Control Inputs:

   • The A and B pins are used to select the register to which data is written.
   • Use the WR pin to initiate data writes. A low pulse on WR will write data to the selected register.

5. Output:

   • The OUT pin provides the audio output. Connect this to an amplifier or speaker as needed.
   • The output is a differential signal; use appropriate filtering if necessary.

6. Operating Conditions:

   • Ensure the operating temperature is within the specified range (-40°C to 85°C).
   • Store the device in a temperature-controlled environment to avoid damage.

7. Handling:

   • Handle the device with care to avoid static discharge, which can damage the internal circuits.
   • Follow standard ESD (Electrostatic Discharge) precautions when handling the device.

8. Testing:

   • Before integrating the SN76489AN into a circuit, test it using a known good setup to ensure proper functionality.

9. Layout Considerations:

   • Keep the power and ground traces short and wide to minimize noise.
   • Place decoupling capacitors close to the Vcc and GND pins to filter out high-frequency noise.

10. Troubleshooting:

    • If the device does not function as expected, check the power supply, clock signal, and data lines for correct levels and timing.
    • Verify that all connections are secure and free from shorts or open circuits.

(For reference only)