Details

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BUY LM239PT https://www.utsource.net/itm/p/1574421.html
LOWPOWER QUAD VOLTAGE COMPARATORS

Parameter	Symbol	Min	Typical	Max	Unit
Supply Voltage	VCC	2.0	-	36	V
Input Voltage Range	VI	0	-	VCC - 1.5	V
Output Short-Circuit Current	ISC	-	20	-	mA
Output Low Voltage	VOL	0.08	0.15	0.25	V
Output High Voltage	VOH	-	VCC - 1.5	-	V
Quiescent Current	IQ	-	350	-	μA
Input Bias Current	IB	-	250	-	nA
Input Offset Current	IIO	-	20	-	nA
Common-Mode Rejection Ratio	CMRR	-	85	-	dB
Slew Rate	SR	-	0.4	-	V/μs
Operating Temperature	TA	-40	-	125	°C
Storage Temperature	TSTG	-65	-	150	°C

Instructions for Using LM239PT:

1. Power Supply:

   • Ensure the supply voltage (V_CC) is within the range of 2.0V to 36V.
   • Connect the positive supply to pin 3 (V_CC) and the negative supply (ground) to pin 2 (GND).

2. Input Connections:

   • Connect the non-inverting input (pin 5) to the signal source.
   • Connect the inverting input (pin 6) to the reference or another signal source.

3. Output Connections:

   • The output (pin 7) can drive loads directly, but ensure the load current does not exceed the maximum output short-circuit current (20mA).
   • For high-speed switching applications, consider adding a pull-up resistor to the output to ensure a stable high state.

4. Biasing and Offset:

   • The input bias current is very low (250nA typical), but for precision applications, use high-value resistors to minimize bias current effects.
   • The input offset current (20nA typical) should be considered when designing the input circuit to avoid significant errors.

5. Temperature Considerations:

   • The operating temperature range is from -40°C to 125°C. Ensure the device is used within this range to maintain performance and reliability.
   • Store the device in a temperature range from -65°C to 150°C to prevent damage.

6. Common-Mode Rejection Ratio (CMRR):

   • The CMRR of 85dB helps in rejecting common-mode signals, which is useful in noisy environments.

7. Slew Rate:

   • The slew rate of 0.4V/μs limits the rate at which the output can change. This is important for applications requiring fast response times.

8. Quiescent Current:

   • The quiescent current is typically 350μA, which is relatively low, making the LM239PT suitable for battery-powered applications.

9. Handling Precautions:

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

By following these instructions, you can ensure optimal performance and reliability of the LM239PT in your circuits.

(For reference only)