Overview
The SNJ54HC4040J is a 12-stage asynchronous binary counter produced by Texas Instruments. This component is part of the HC/UH logic family and is designed for a wide range of applications requiring counting and timing functions. The counter features a high level of versatility, with all stages of the counter available externally. It operates over a broad voltage range and is known for its low power consumption and high reliability.
Key Specifications
| Parameter | Value |
|---|---|
| Type | 12-stage asynchronous binary counter |
| Lifecycle Status | ACTIVE |
| Mount | Through Hole |
| Package / Case | CDIP |
| Number of Pins | 16 |
| Operating Temperature Range | -55°C to 125°C |
| Supply Voltage | 2 V to 6 V |
| Propagation Delay | 225 ns (typical at VCC = 5V) |
| Clock Frequency | Up to 22 MHz (at VCC = 5V) |
| Power Supply Current (ICC) | 80 µA (maximum at VCC = 5V) |
| Trigger Type | Negative Edge |
| Screening Level | MIL-PRF-38535 |
| RoHS Status | RoHS Compliant |
| Lead Free | Contains Lead |
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 ICC of 80 µA at VCC = 5V
- Typical propagation delay of 12 ns at VCC = 5V
- ±4-mA output drive at VCC = 5V
- Low input current of 1 µA maximum
- High level at the clear (CLR) input asynchronously clears the counter and resets all outputs low
- Count advanced on a high-to-low transition at the clock (CLK) input
Applications
- Frequency dividing circuits
- Time delay circuits
- Communications and digital frequency synthesizers
- VHF, UHF, FM, AM, and other communication systems
- Counter controls and timing circuits
Q & A
- What is the SNJ54HC4040J?
The SNJ54HC4040J is a 12-stage asynchronous binary counter produced by Texas Instruments.
- What is the operating temperature range of the SNJ54HC4040J?
The operating temperature range is -55°C to 125°C.
- What is the supply voltage range for the SNJ54HC4040J?
The supply voltage range is 2 V to 6 V.
- What is the maximum clock frequency of the SNJ54HC4040J?
The maximum clock frequency is up to 22 MHz at VCC = 5V.
- How does the counter advance in the SNJ54HC4040J?
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.
- Is the SNJ54HC4040J RoHS compliant?
Yes, the SNJ54HC4040J is RoHS compliant.
- What is the typical propagation delay of the SNJ54HC4040J?
The typical propagation delay is 225 ns at VCC = 5V.
- What type of trigger does the SNJ54HC4040J use?
The SNJ54HC4040J uses a negative edge trigger.
- What is the screening level of the SNJ54HC4040J?
The screening level is MIL-PRF-38535.
- Does the SNJ54HC4040J contain lead?
Yes, the SNJ54HC4040J contains lead.
