Description
BUY 74HCT4040N https://www.utsource.net/itm/p/325261.html
12-stage binary ripple counter - Description: 12-Stage Binary Ripple Counter; TTL Enabled ; Fmax: 79 MHz; Logic switching levels: TTL ; Number of pins: 16 ; Output drive capability: +/- 4 mA ; Power dissipation considerations: Low Power ; Propagation delay: 16 ns; Voltage: 4.5-5.5 V
| Parameter |
Symbol |
Conditions |
Min |
Typ |
Max |
Unit |
| Supply Voltage |
VCC |
Operating |
2.0 |
- |
6.0 |
V |
| Input Low Voltage |
VIL |
- |
0.3 |
- |
1.5 |
V |
| Input High Voltage |
VIH |
- |
2.0 |
- |
VCC - 0.5 |
V |
| Output Low Voltage |
VOL |
IOL = 4 mA |
0.0 |
- |
0.4 |
V |
| Output High Voltage |
VOH |
IOH = -0.4 mA |
VCC - 0.4 |
- |
VCC |
V |
| Propagation Delay Time |
tpd |
VCC = 5V, fosc = 1 MHz |
- |
55 |
- |
ns |
| Power Dissipation |
PTOT |
- |
- |
- |
500 |
mW |
| Operating Temperature Range |
TA |
- |
-40 |
- |
85 |
°C |
| Storage Temperature Range |
TSTG |
- |
-65 |
- |
150 |
°C |
Instructions for Use:
Power Supply:
- Connect VCC to the positive supply voltage (2.0V to 6.0V).
- Connect GND to the ground.
Input Signals:
- Ensure input signals are within the specified VIL and VIH ranges.
- Avoid exceeding the maximum input voltage (VCC + 0.5V).
Output Signals:
- The output voltages will be within the specified VOL and VOH ranges.
- Ensure that the load connected to the outputs does not exceed the maximum current ratings.
Propagation Delay:
- The propagation delay time (tpd) is crucial for timing considerations. At VCC = 5V and fosc = 1 MHz, the typical delay is 55 ns.
Temperature Considerations:
- Operate the device within the specified temperature range (TA = -40°C to 85°C) to ensure reliable performance.
- Store the device within the storage temperature range (TSTG = -65°C to 150°C).
Power Dissipation:
- Ensure that the total power dissipation (PTOT) does not exceed 500 mW to avoid overheating and potential damage.
Handling:
- Handle the device with care to avoid static damage. Use proper ESD protection measures when handling the IC.
Layout Considerations:
- Use short leads and proper decoupling capacitors (typically 0.1 μF) close to the VCC and GND pins to minimize noise and improve stability.
(For reference only)
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