Overview
The SN74HC4040DR is a 12-stage asynchronous binary counter produced by Texas Instruments. This device is part of the HC4040 series and is available in a 16-pin SOIC (Small Outline Integrated Circuit) package. It operates within a wide voltage range of 2 V to 6 V, making it versatile for various applications. The counter features all stages with externally available outputs, a clear input for asynchronous reset, and a clock input for advancing the count on high-to-low transitions.
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 | V | |
| VIH (High-level Input Voltage) | VCC = 4.5 V | 3.15 | 3.15 | V | |
| VIH (High-level Input Voltage) | VCC = 6 V | 4.2 | 4.2 | V | |
| VIL (Low-level Input Voltage) | VCC = 2 V | 0.5 | 0.5 | V | |
| VIL (Low-level Input Voltage) | VCC = 4.5 V | 1.35 | 1.35 | V | |
| VIL (Low-level Input Voltage) | VCC = 6 V | 1.8 | 1.8 | V | |
| VOH (High-level Output Voltage) | IOH = –20 μA, VCC = 4.5 V | 4.4 | 4.499 | V | |
| VOL (Low-level Output Voltage) | IOL = 20 μA, VCC = 4.5 V | 0.001 | 0.1 | V | |
| ICC (Supply Current) | VI = VCC or 0, IO = 0, VCC = 6 V | 80 | 160 | μA | |
| fCLK (Clock Frequency) | VCC = 4.5 V | 19 | 28 | MHz | |
| tpd (Propagation Delay) | CLK to QA, VCC = 4.5 V | 16 | 30 | 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 of 80 μA at 6 V
- Typical propagation delay of 12 ns
- ±4-mA output drive at 5 V
- Low input current of 1 μA max
Applications
The SN74HC4040DR is suitable for various applications, including:
- Time-delay circuits
- Counter controls
- Frequency-dividing circuits
Q & A
- What is the operating voltage range of the SN74HC4040DR?
The operating voltage range is from 2 V to 6 V.
- How many stages does the SN74HC4040DR counter have?
The counter has 12 stages.
- What is the maximum supply current at 6 V?
The maximum supply current is 160 μA.
- What is the typical propagation delay at 4.5 V?
The typical propagation delay is 12 ns.
- How do you reset the counter?
A high level at the clear (CLR) input asynchronously clears the counter and resets all outputs low.
- What is the clock input used for?
The clock input (CLK) is used to advance the count on a high-to-low transition.
- What are some common applications of the SN74HC4040DR?
Common applications include time-delay circuits, counter controls, and frequency-dividing circuits.
- What is the package type of the SN74HC4040DR?
The package type is 16-pin SOIC (Small Outline Integrated Circuit).
- What is the operating temperature range for the SN74HC4040DR?
The operating temperature range is from -40°C to 85°C.
- Can the SN74HC4040DR drive LSTTL loads?
Yes, it can drive up to 10 LSTTL loads.
- What is the input transition rise/fall time at 4.5 V?
The input transition rise/fall time is 500 ns.
