Description
BUY 74LS125D https://www.utsource.net/itm/p/239786.html
QUADRUPLE BUS BUFFERS WITH 3-STATE OUTPUTS
| Parameter |
Symbol |
Conditions |
Min |
Typ |
Max |
Unit |
| Supply Voltage |
VCC |
- |
4.75 |
5.0 |
5.25 |
V |
| Input High Voltage |
VIH |
IIH = 20 μA |
2.0 |
- |
VCC |
V |
| Input Low Voltage |
VIL |
IIL = -0.4 mA |
0 |
- |
0.8 |
V |
| Output High Voltage |
VOH |
IOH = -0.4 mA |
2.4 |
- |
VCC - 0.5 |
V |
| Output Low Voltage |
VOL |
IOL = 16 mA |
0 |
- |
0.5 |
V |
| Propagation Delay Time |
tpd |
VCC = 5V, TA = 25°C |
- |
18 |
- |
ns |
| Power Dissipation |
PD |
Per Package |
- |
- |
100 |
mW |
| Operating Temperature |
TA |
- |
-40 |
- |
85 |
°C |
| Storage Temperature |
TSTG |
- |
-65 |
- |
150 |
°C |
Instructions for Using 74LS125D:
Supply Voltage:
- Ensure the supply voltage (VCC) is within the range of 4.75V to 5.25V to avoid damage to the device.
Input Levels:
- For a high input, the voltage should be at least 2.0V.
- For a low input, the voltage should not exceed 0.8V.
Output Levels:
- When driving a load, ensure the output high voltage (VOH) is at least 2.4V when sinking 0.4 mA.
- The output low voltage (VOL) should not exceed 0.5V when sourcing 16 mA.
Propagation Delay:
- The propagation delay time (tpd) is typically 18 nanoseconds under standard conditions (VCC = 5V, TA = 25°C).
Power Dissipation:
- The maximum power dissipation per package is 100 mW. Ensure proper heat dissipation if operating near this limit.
Temperature Range:
- 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 74LS125D with care to avoid static damage. Use proper ESD protection when handling the device.
Circuit Design:
- Ensure all inputs are either connected to a valid logic level or pulled up/down as required to prevent floating inputs.
- Use decoupling capacitors close to the power pins to filter out noise and stabilize the supply voltage.
Testing:
- Test the device under typical operating conditions to ensure it meets the specified parameters.
- Verify the functionality by applying known input signals and measuring the corresponding outputs.
(For reference only)
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