Details

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BUY SN74LS85N https://www.utsource.net/itm/p/12538460.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Power Supply Voltage	VCC	Continuous Operation	4.75	-	5.25	V
Input Low Voltage	VIL	IL = 0.4 mA	0.8	-	-	V
Input High Voltage	VIH	IH = -0.4 mA	-	-	2.0	V
Output Low Voltage	VOL	IL = 16 mA	0.25	-	-	V
Output High Voltage	VOH	IH = -4 mA	-	-	2.4	V
Propagation Delay Time	tpd	VCC = 5V, TA = 25°C	-	19	-	ns
Power Dissipation	PTOT	Continuous Operation	-	-	350	mW
Operating Temperature	TA	Continuous Operation	-40	-	85	°C
Storage Temperature	TSTG	Non-Operating	-65	-	150	°C

Instructions for Using SN74LS85N:

1. Power Supply:

   • Ensure the power supply voltage (V_CC) is within the range of 4.75V to 5.25V.
   • Connect the ground (GND) pin to a stable 0V reference.

2. Input Signals:

   • For a logic low input, the voltage should be less than 0.8V.
   • For a logic high input, the voltage should be greater than 2.0V.
   • Ensure that the input currents do not exceed the specified limits to avoid damaging the device.

3. Output Signals:

   • The output low voltage (V_OL) should be less than 0.25V when sourcing 16 mA.
   • The output high voltage (V_OH) should be greater than 2.4V when sinking -4 mA.
   • Use appropriate pull-up or pull-down resistors if necessary to ensure proper logic levels.

4. Propagation Delay:

   • The typical propagation delay time (t_pd) is 19 ns at 25°C and 5V supply voltage.
   • This value can vary with temperature and supply voltage, so ensure your design accounts for these variations.

5. Temperature Considerations:

   • The operating temperature range is from -40°C to 85°C.
   • Store the device in a temperature range of -65°C to 150°C when not in use.

6. Handling:

   • Handle the device with care to avoid static discharge, which can damage the internal circuits.
   • Use proper anti-static precautions during handling and installation.

7. Application Notes:

   • The SN74LS85N is a 4-bit magnitude comparator used to compare two 4-bit words.
   • It can be cascaded to compare longer words by connecting the cascade inputs and outputs appropriately.
   • Refer to the datasheet for detailed pin configurations and application examples.

(For reference only)