Description
BUY HD74HC259P https://www.utsource.net/itm/p/4511088.html
8-bit Addressable Latch
| Parameter |
Symbol |
Min |
Typ |
Max |
Unit |
Conditions |
| Supply Voltage |
VCC |
2.0 |
- |
6.0 |
V |
- |
| Input Low Voltage |
VIL |
- |
0.8 |
- |
V |
VCC = 4.5V to 5.5V |
| Input High Voltage |
VIH |
- |
2.0 |
- |
V |
VCC = 4.5V to 5.5V |
| Output Low Voltage (Sink) |
VOL |
0.0 |
0.1 |
0.2 |
V |
IOL = 4mA, VCC = 4.5V to 5.5V |
| Output High Voltage (Source) |
VOH |
4.4 |
4.5 |
4.6 |
V |
IOH = -4mA, VCC = 4.5V to 5.5V |
| Input Leakage Current |
IIL |
-1.0 |
-0.1 |
1.0 |
μA |
VCC = 4.5V to 5.5V |
| Output Leakage Current |
IOL |
-1.0 |
-0.1 |
1.0 |
μA |
VCC = 4.5V to 5.5V |
| Propagation Delay Time |
tpd |
8 |
- |
18 |
ns |
VCC = 5V, fIN = 10MHz |
| Power Dissipation |
PD |
- |
- |
100 |
mW |
VCC = 5V, TA = 25°C |
| Operating Temperature Range |
TA |
-40 |
- |
85 |
°C |
- |
| Storage Temperature Range |
TSTG |
-65 |
- |
150 |
°C |
- |
Instructions for Use
Power Supply:
- Connect the VCC pin to the positive supply voltage (2.0V to 6.0V).
- Connect the GND pin to the ground.
Input Signals:
- Ensure that input signals (A, B, C, and control inputs) are within the specified input voltage levels.
- Use pull-up or pull-down resistors if necessary to maintain stable logic levels.
Output Configuration:
- The outputs (Q0 to Q7) can be used to drive loads directly, but ensure that the current ratings are not exceeded.
- For driving higher current loads, consider using additional transistors or drivers.
Propagation Delay:
- The propagation delay time is critical for timing-sensitive applications. Ensure that the propagation delay is accounted for in your design.
Temperature Considerations:
- Operate the device within the specified temperature range to avoid damage or performance degradation.
- Store the device in a temperature-controlled environment to prevent damage during storage.
Handling:
- Handle the device with care to avoid static discharge, which can damage the internal circuits.
- Use appropriate ESD protection measures when handling the device.
Testing:
- Test the device under typical operating conditions to ensure it meets the required specifications.
- Use a multimeter to check for proper voltage levels at the input and output pins.
Layout Considerations:
- Place the device close to the power supply and ground planes to minimize noise and improve stability.
- Use decoupling capacitors (typically 0.1μF) near the VCC and GND pins to filter out high-frequency noise.
By following these guidelines, you can ensure reliable operation of the HD74HC259P in your application.
(For reference only)
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