Details

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BUY SN74HCT646DW https://www.utsource.net/itm/p/7282789.html
74HCT Family Bus Transceivers, Texas Instruments Texas Instruments range of Bus Transceivers from the 74HCT Family of CMOS Logic ICs. Inputs of the 74HCT family are 74LSTTL compatible, and the products use silicon gate CMOS technology to achieve operating speeds similar to the LSTTL family but with the low power consumption of standard CMOS integrated circuits. High-Speed CMOS Logic Operating Voltage 4.5 to 5.5 V Compatibility: Input TTL, Output CMOS

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VCC		2.0		6.0	V
Input Low Voltage	VI(L)	VIN = GND			0.8	V
Input High Voltage	VI(H)	VIN = VCC	2.0		VCC	V
Output Low Voltage	VO(L)	IO = 4 mA			0.4	V
Output High Voltage	VO(H)	IO = -4 mA	VCC-0.1		VCC	V
Propagation Delay Time	tpd	VCC = 5V		9.0		ns
Power Dissipation	PD				100	mW
Operating Temperature	Topr		-40		85	°C

Instructions for SN74HCT646DW:

1. Power Supply:

   • Ensure the supply voltage (VCC) is within the range of 2.0V to 6.0V.

2. Input Signal Levels:

   • For a valid low input, the voltage should not exceed 0.8V.
   • For a valid high input, the voltage should be at least 2.0V and can go up to VCC.

3. Output Signal Levels:

   • When the output is low, it will be no more than 0.4V under a load of 4mA.
   • When the output is high, it will be at least VCC-0.1V under a load of -4mA.

4. Timing Considerations:

   • The propagation delay time is typically 9.0 nanoseconds when operating at VCC = 5V.

5. Thermal Management:

   • Keep the operating temperature between -40°C and 85°C to ensure reliable operation.

6. Power Dissipation:

   • Ensure that the power dissipation does not exceed 100mW to avoid overheating.

7. Handling:

   • Handle with care as ESD (Electrostatic Discharge) sensitive device. Use appropriate ESD protection measures during handling and installation.

8. Mounting:

   • Follow the manufacturer's guidelines for mounting and soldering to ensure proper electrical connections and mechanical integrity.

(For reference only)