| Function | Counter |
| Bits (#) | 12 |
| Technology Family | LV-A |
| Supply voltage (Min) (V) | 2 |
| Supply voltage (Max) (V) | 5.5 |
| Input type | Standard CMOS |
| Output type | Push-Pull |
| Features | Balanced outputs, Very high speed (tpd 5-10ns), Over-voltage tolerant inputs, Partial power down (Ioff) |
- Controlled Baseline
- One Assembly
- Test Site
- One Fabrication Site
- Extended Temperature Performance of -55°C to 125°C
- Enhanced Diminishing Manufacturing Sources (DMS) Support
- Enhanced Product-Change Notification
- Qualification Pedigree(1)
- 2-V to 5.5-V VCC Operation
- Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25°C
- Typical VOHV (Output VOH Undershoot) >2.3 V at VCC = 3.3 V, TA = 25°C
- Support Mixed-Mode Voltage Operation on All Ports
- High On-Off Output-Voltage Ratio
- Low Crosstalk Between Switches
- Individual Switch Controls
- Extremely Low Input Current
- Ioff Supports Partial-Power-Down Mode Operation
- Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
- ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
(1) Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits.
The SN74LV4040A device is a 12 bit asynchronous binary counter with the outputs of all stages available externally. A high level at the clear (CLR) input asynchronously clears the counter and resets all outputs low. The count is advanced on a high-to-low transition at the clock (CLK) input. Applications include time-delay circuits, counter controls, and frequency-dividing circuits.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down.
