Overview
The SN74LV4040APWRG4 is a high-performance, 12-bit asynchronous binary counter produced by Texas Instruments. This integrated circuit (IC) is part of the 74LV family and is designed to operate with a wide power supply range of 2 V to 5.5 V. It features a falling edge-triggered clock and an active high clear input, making it versatile for various digital counting applications. The device provides all output stages externally, enhancing its utility in complex digital circuits.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage Range | -0.5 | 7 | V | |
| Input Voltage Range | -0.5 | 7 | V | |
| Operating Free-Air Temperature | -40 | 85 | ℃ | |
| Low-Level Output Current (IOL) | 6 | 12 | mA | |
| Pulse Duration (CLK high or low) | 5 | 7 | ns | |
| Setup Time (CLR inactive before CLK↓) | 5 | 6.5 | ns | |
| Propagation Delay Time (CLK to QA) | 4.2 | 7.3 | 10.5 | ns |
| Power Dissipation Capacitance (Cpd) | 11.9 | 13.1 | pF |
Key Features
- Operates with a power supply range of 2 V to 5.5 V
- Falling edge-triggered clock input
- Active high clear input
- All output stages available externally
- Supports 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 100mA per JESD 78, class II
Applications
The SN74LV4040APWRG4 is suitable for a variety of digital counting applications, including but not limited to:
- Digital counters in industrial control systems
- Timing and sequencing circuits
- Automotive electronics
- Consumer electronics requiring precise counting functions
- Medical devices needing accurate digital counting
Q & A
- What is the power supply voltage range of the SN74LV4040APWRG4?
The SN74LV4040APWRG4 operates with a power supply range of 2 V to 5.5 V. - What type of clock input does the SN74LV4040APWRG4 have?
The SN74LV4040APWRG4 has a falling edge-triggered clock input. - What is the function of the CLR input?
The CLR input is an active high clear input. - Are all output stages available externally?
Yes, all output stages of the SN74LV4040APWRG4 are available externally. - What is the operating temperature range of the SN74LV4040APWRG4?
The operating free-air temperature range is -40°C to 85°C. - Does the SN74LV4040APWRG4 support mixed-mode voltage operation?
Yes, it supports mixed-mode voltage operation on all ports. - What is the typical propagation delay time from CLK to QA?
The typical propagation delay time from CLK to QA is 7.3 ns. - What is the power dissipation capacitance (Cpd) at 3.3 V and 10 MHz?
The power dissipation capacitance (Cpd) at 3.3 V and 10 MHz is typically 11.9 pF. - Does the SN74LV4040APWRG4 support partial-power-down mode operation?
Yes, it supports partial-power-down mode operation through the Ioff feature. - What is the latch-up performance of the SN74LV4040APWRG4?
The latch-up performance exceeds 100mA per JESD 78, class II.
