Details

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BUY 74HC07A https://www.utsource.net/itm/p/12541880.html

Below is the parameter table and instructions for the 74HC07A open-collector buffer.

74HC07A Parameter Table

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VCC		2.0	4.5	6.0	V
Input Low Voltage	VIL	IIN = 1.0 mA	0.3		0.8	V
Input High Voltage	VIH	IIN = -0.1 mA	2.0		3.5	V
Output Low Voltage	VOL	IOL = 4.0 mA	0.1	0.2	0.4	V
Output High Voltage	VOH	IOH = -0.4 mA	2.4	3.4	5.0	V
Input Current (Low)	IIL	VIN = 0 V	-1		-0.01	渭A
Input Current (High)	IIH	VIN = VCC	1		0.01	渭A
Output Current (Low)	IOL	VOL = 0.4 V	4		25	mA
Output Current (High)	IOH	VOH = VCC - 0.4 V	-0.4		-0.4	mA
Propagation Delay Time	tpd	VCC = 4.5 V, VOH = 3.5 V, VOL = 0.4 V	8	18	36	ns
Power Consumption	Ptot	VCC = 4.5 V, f = 1 MHz	1.2		2.0	mW

Instructions for 74HC07A

1. Power Supply:

   • Connect V_CC to the positive supply voltage (2.0 V to 6.0 V).
   • Connect GND to the ground (0 V).

2. Input Connections:

   • Connect the input pins (1, 3, 5, 9, 11, 13) to the signals you want to buffer.
   • Ensure that the input voltages are within the specified range (0.3 V to 3.5 V).

3. Output Connections:

   • Connect the output pins (2, 4, 6, 8, 10, 12) to the load or next stage of your circuit.
   • Use pull-up resistors on the output lines to ensure proper logic levels when the outputs are in the high-impedance state.

4. Operation:

   • The 74HC07A is an open-collector buffer, meaning the output can only sink current (pull it low) and not source current (pull it high).
   • When the input is high (V_IH), the corresponding output is in a high-impedance state.
   • When the input is low (V_IL), the corresponding output is pulled low (V_OL).

5. Pull-Up Resistors:

   • To use the outputs effectively, connect a pull-up resistor between the output pin and V_CC. A typical value for the pull-up resistor is 1 k惟 to 10 k惟.

6. Maximum Ratings:

   • Do not exceed the maximum ratings for supply voltage, input voltage, and output current to avoid damaging the device.

7. Storage and Handling:

   • Store the device in a dry, static-free environment.
   • Handle with care to avoid damage from electrostatic discharge (ESD).

By following these instructions, you can effectively use the 74HC07A open-collector buffer in your circuits.

(For reference only)