74HC155: 马来西亚的首选 Utsource Holding Company Limited

详情

BUY 74HC155 https://www.utsource.net/itm/p/1150031.html
Dual 2-to-4-line Decoders/Demultiplexers

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Supply Voltage	V_CC	2.0	-	6.0	V
Output Low Voltage	V_OL	0.0	0.1	0.2	V	I_OL = 4 mA, V_CC = 4.5 to 5.5 V
Output High Voltage	V_OH	2.4	2.7	3.4	V	I_OH = -4 mA, V_CC = 4.5 to 5.5 V
Input Low Voltage	V_IL	0.0	0.8	1.5	V	V_CC = 4.5 to 5.5 V
Input High Voltage	V_IH	3.5	4.0	V_CC - 1.5	V	V_CC = 4.5 to 5.5 V
Propagation Delay Time	t_pd	-	10	25	ns	V_CC = 4.5 to 5.5 V, TA = 25°C
Power Dissipation	P_D	-	-	100	mW	Per Package
Operating Temperature Range	T_A	-40	-	85	°C
Storage Temperature Range	T_STG	-65	-	150	°C

Power Supply:
- Connect V_CC to the positive supply voltage (2.0V to 6.0V).
- Connect GND to the ground.
Input Selection:
- The 74HC155 is a dual 4-line to 2-line data selector/multiplexer.
- Use the A0 and A1 inputs to select one of the four data inputs (D0 to D3) for each of the two multiplexers.
Enable Inputs:
- The G1 and G2 inputs are active low enable pins.
- Set G1 or G2 to low to enable the corresponding multiplexer.
- If both G1 and G2 are high, the outputs are in a high-impedance state.
Output Pins:
- Y0 and Y1 are the output pins for the first multiplexer.
- Y2 and Y3 are the output pins for the second multiplexer.
- When enabled, the selected input (based on A0 and A1) will be reflected on the corresponding output pin.
Propagation Delay:
- The propagation delay time (t_pd) is the time it takes for a change at the input to appear at the output. It is typically around 10 ns at room temperature and standard supply voltages.
Temperature Considerations:
- Ensure the operating temperature (T_A) stays within the range of -40°C to 85°C.
- Store the device in temperatures between -65°C and 150°C.
Power Dissipation:
- The maximum power dissipation for the package is 100 mW. Ensure proper heat dissipation if operating near this limit.
Handling:
- Handle the device with care to avoid damage from electrostatic discharge (ESD).

By following these instructions, you can effectively use the 74HC155 in your digital circuits.

(For reference only)