74HCT390D: Pilihan Utama di United States (USA) Utsource Holding Company Limited

Penerangan

BUY 74HCT390D https://www.utsource.net/itm/p/1286160.html
8-Bit Parallel-Load Shift Registers 16-TSSOP -40 to 85

Below is the parameter table and instructions for the 74HCT390D dual BCD decade/4-bit binary counters.

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Supply Voltage	V_CC	2.0	5.0	6.5	V
Input Low Voltage	V_IL	0.0	0.8	1.5	V	V_CC = 4.5V to 5.5V
Input High Voltage	V_IH	2.0	3.5	V_CC - 1.5	V	V_CC = 4.5V to 5.5V
Output Low Voltage	V_OL	0.0	0.1	0.4	V	I_OL = 4mA, V_CC = 4.5V to 5.5V
Output High Voltage	V_OH	V_CC - 0.1	V_CC - 0.2	V_CC - 0.4	V	I_OH = -0.4mA, V_CC = 4.5V to 5.5V
Input Current (Low)	I_IL	-1.0	-0.4	-0.1	mA	V_CC = 4.5V to 5.5V
Input Current (High)	I_IH	1.0	0.4	0.1	mA	V_CC = 4.5V to 5.5V
Output Current (Low)	I_OL	-8	-4	-1.6	mA	V_CC = 4.5V to 5.5V
Output Current (High)	I_OH	8	4	1.6	mA	V_CC = 4.5V to 5.5V
Propagation Delay Time	t_pd	8	12	20	ns	V_CC = 5V, T_A = 25°C
Power Consumption	P_tot	-	10	20	mW	V_CC = 5V, f = 10MHz
Operating Temperature Range	T_A	-40	-	85	°C
Storage Temperature Range	T_STG	-65	-	150	°C

Power Supply:
- Connect the V_CC pin to the positive supply voltage (2.0V to 6.5V).
- Connect the GND pin to the ground.
Input Signals:
- Apply the clock signal to the appropriate clock input (CP0 or CP1) of each counter.
- Use the reset inputs (R0 or R1) to reset the counters to zero. A high signal on these pins will reset the counter.
Output Signals:
- The outputs (Q0 to Q9) provide the binary or BCD count.
- The ripple-carry output (RCO) can be used to cascade multiple counters.
Mode Selection:
- To operate in BCD mode, connect the mode select input (MS) to V_CC.
- To operate in binary mode, connect the mode select input (MS) to GND.
Cascading:
- Connect the ripple-carry output (RCO) of one counter to the clock input (CP) of the next counter to achieve higher count ranges.
Decoding:
- Use the decode enable inputs (DE0 or DE1) to enable or disable the decoding function. A low signal on these pins enables the decoding.
Handling:
- Handle the device with care to avoid static damage. Use proper ESD protection when handling the IC.
- Ensure that all unused inputs are tied to a known state (either V_CC or GND) to prevent floating inputs.
Testing:
- Before finalizing the design, test the circuit under different conditions (e.g., temperature, power supply voltage) to ensure reliable operation.

By following these instructions and parameters, you can effectively use the 74HCT390D in your digital circuits.

(For reference only)