Overview
The SN74HC4040DRG4 is a 12-stage asynchronous binary counter produced by Texas Instruments. This device is part of the 74HC series, known for its high-speed and low-power CMOS logic. The counter features all stages with externally available outputs, making it versatile for various applications. A high level at the clear (CLR) input asynchronously clears the counter and resets all outputs low, while the count is advanced on a high-to-low transition at the clock (CLK) input.
Key Specifications
| Parameter | Condition | Min | Max | Unit | |
|---|---|---|---|---|---|
| VCC (Supply Voltage) | 2 | 5 | 6 | V | |
| VIH (High-level Input Voltage) | VCC = 2 V | 1.5 | 1.5 | 1.5 | V |
| VIH (High-level Input Voltage) | VCC = 4.5 V | 3.15 | 3.15 | 3.15 | V |
| VIH (High-level Input Voltage) | VCC = 6 V | 4.2 | 4.2 | 4.2 | V |
| VIL (Low-level Input Voltage) | VCC = 2 V | 0.5 | 0.5 | 0.5 | V |
| VIL (Low-level Input Voltage) | VCC = 4.5 V | 1.35 | 1.35 | 1.35 | V |
| VIL (Low-level Input Voltage) | VCC = 6 V | 1.8 | 1.8 | 1.8 | V |
| ICC (Supply Current) | VI = VCC or 0, IO = 0 | 8 | 160 | μA | |
| fCLK (Clock Frequency) | VCC = 2 V | 3.7 | 5.5 | MHz | |
| fCLK (Clock Frequency) | VCC = 4.5 V | 19 | 28 | MHz | |
| fCLK (Clock Frequency) | VCC = 6 V | 22 | 33 | MHz | |
| tpd (Propagation Delay) | CLK to QA, VCC = 2 V | 62 | 150 | ns | |
| tpd (Propagation Delay) | CLK to QA, VCC = 4.5 V | 16 | 30 | ns | |
| tpd (Propagation Delay) | CLK to QA, VCC = 6 V | 12 | 26 | ns |
Key Features
- Wide operating voltage range of 2 V to 6 V
- Outputs can drive up to 10 LSTTL loads
- Low power consumption, with a maximum supply current (ICC) of 80 μA
- Typical propagation delay (tpd) of 12 ns
- ±4-mA output drive at 5 V
- Low input current of 1 μA max
Applications
The SN74HC4040DRG4 is suitable for various applications, including:
- Time-delay circuits
- Counter controls
- Frequency-dividing circuits
Q & A
- What is the SN74HC4040DRG4?
The SN74HC4040DRG4 is a 12-stage asynchronous binary counter from Texas Instruments.
- What is the operating voltage range of the SN74HC4040DRG4?
The operating voltage range is from 2 V to 6 V.
- How many LSTTL loads can the outputs drive?
The outputs can drive up to 10 LSTTL loads.
- What is the maximum supply current (ICC) of the SN74HC4040DRG4?
The maximum supply current is 80 μA.
- What is the typical propagation delay (tpd) of the SN74HC4040DRG4?
The typical propagation delay is 12 ns.
- How does the counter advance?
The count is advanced on a high-to-low transition at the clock (CLK) input.
- What happens when a high level is applied to the clear (CLR) input?
A high level at the clear (CLR) input asynchronously clears the counter and resets all outputs low.
- What are some common applications of the SN74HC4040DRG4?
Common applications include time-delay circuits, counter controls, and frequency-dividing circuits.
- What is the clock frequency range of the SN74HC4040DRG4?
The clock frequency ranges from 3.7 MHz at 2 V to 33 MHz at 6 V.
- What is the package type of the SN74HC4040DRG4?
The package type is SOIC (16 pins).
