74LS257APC: Top Choice in United States (USA) Utsource Holding Company Limited

Description

Parameter	Symbol	Min	Typical	Max	Unit
Supply Voltage	Vcc	4.75	5.0	5.25	V
Output High Level Voltage	VOH	2.7	3.5	5.0	V
Output Low Level Voltage	VOL	0	0.4	0.5	V
Input High Level Voltage	VIH	2.0	3.5	5.0	V
Input Low Level Voltage	VIL	0	0.8	1.5	V
Propagation Delay Time (Typical)	tpd	-	12	-	ns
Power Dissipation	PD	-	100	-	mW
Operating Temperature Range	Topr	-40	-	85	°C
Storage Temperature Range	Tstg	-65	-	150	°C

Power Supply:
- Connect the Vcc pin to a 5V power supply.
- Ground the GND pin.
Signal Levels:
- Ensure that input signals meet the specified high and low voltage levels.
- Output signals will be driven to the specified high and low voltage levels.
Propagation Delay:
- The typical propagation delay time is 12 nanoseconds. This is the time it takes for a change in the input signal to affect the output signal.
Power Dissipation:
- The device can dissipate up to 100 milliwatts of power. Ensure proper heat dissipation if operating near this limit.
Temperature Ranges:
- The operating temperature range is from -40°C to 85°C.
- The storage temperature range is from -65°C to 150°C.
Handling:
- Handle the device with care to avoid static damage.
- Follow standard ESD (Electrostatic Discharge) precautions when handling the component.
Soldering:
- Use a soldering iron with a temperature no higher than 300°C.
- Ensure that the soldering process does not exceed 10 seconds per joint.
Testing:
- Test the device under normal operating conditions to ensure it meets the specified parameters.
- Use a multimeter or oscilloscope to verify input and output signal levels.

(For reference only)