Overview
The SN74HC4040PWG4 is a 12-stage asynchronous binary counter produced by Texas Instruments. This device is part of the HC4040 series, known for its wide operating voltage range and low power consumption. The counter features all stages available externally, 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 | V | |
| VCC = 4.5 V | 3.15 | 3.15 | V | ||
| VCC = 6 V | 4.2 | 4.2 | V | ||
| VIL (Low-level Input Voltage) | VCC = 2 V | 0.5 | 0.5 | V | |
| VCC = 4.5 V | 1.35 | 1.35 | V | ||
| VCC = 6 V | 1.8 | 1.8 | V | ||
| VOH (High-level Output Voltage) | IOH = –20 μA, VCC = 2 V | 1.9 | 1.998 | V | |
| IOH = –4 mA, VCC = 4.5 V | 3.98 | 4.3 | V | ||
| IOH = –5.2 mA, VCC = 6 V | 5.48 | 5.8 | V | ||
| VOL (Low-level Output Voltage) | IOL = 20 μA, VCC = 2 V | 0.002 | 0.1 | V | |
| IOL = 4 mA, VCC = 4.5 V | 0.17 | 0.26 | V | ||
| IOL = 5.2 mA, VCC = 6 V | 0.15 | 0.26 | V | ||
| ICC (Supply Current) | VI = VCC or 0, IO = 0, VCC = 6 V | 8 | 80 | μA | |
| TA (Operating Free-Air Temperature) | -40 | 85 | °C | ||
| fCLK (Clock Frequency) | VCC = 4.5 V | 19 | 22 | MHz | |
| tW (Pulse Duration) | CLK high or low, VCC = 4.5 V | 18 | 27 | ns | |
| tsu (Setup Time) | CLR inactive before CLK↓, VCC = 4.5 V | 12 | 18 | ns |
Key Features
- Wide Operating Voltage Range: 2 V to 6 V
- Low Power Consumption: Maximum supply current of 80 μA
- High Output Drive Capability: Can drive up to 10 LSTTL loads
- Fast Switching Times: Typical propagation delay of 12 ns
- Low Input Current: Maximum input current of 1 μA
- External Stage Outputs: All 12 stages available externally
Applications
- Time-Delay Circuits: Can be used to create time-delay circuits due to its asynchronous counting capability.
- Counter Controls: Suitable for controlling and managing counter-based systems.
- Frequency-Dividing Circuits: Can be used in frequency-dividing applications where precise division of clock signals is required.
Q & A
- What is the operating voltage range of the SN74HC4040PWG4?
The operating voltage range is from 2 V to 6 V.
- How many stages does the SN74HC4040PWG4 counter have?
The counter has 12 stages.
- What is the maximum supply current of the SN74HC4040PWG4?
The maximum supply current is 80 μA.
- What is the typical propagation delay of the SN74HC4040PWG4?
The typical propagation delay is 12 ns.
- Can the SN74HC4040PWG4 drive LSTTL loads?
Yes, it can drive up to 10 LSTTL loads.
- How does the counter advance in the SN74HC4040PWG4?
The count is advanced on a high-to-low transition at the clock (CLK) input.
- What is the effect of a high level at 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 SN74HC4040PWG4?
Common applications include time-delay circuits, counter controls, and frequency-dividing circuits.
- What is the operating temperature range of the SN74HC4040PWG4?
The operating temperature range is from -40°C to 85°C.
- What is the package type of the SN74HC4040PWG4?
The package type is TSSOP (Thin Shrink Small Outline Package).
