Overview
The CD74HCT161M96 is a high-speed CMOS logic 4-bit binary counter with asynchronous reset, produced by Texas Instruments. This component is part of the 74HCT series, which is known for its compatibility with TTL (Transistor-Transistor Logic) inputs and its low power consumption. The CD74HCT161M96 is packaged in a 16-pin SOIC (Small Outline Integrated Circuit) package, making it suitable for a variety of applications requiring high-speed counting and cascading capabilities.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Package Type | SOIC (D) | |
| Pins | 16 | |
| Operating Temperature Range | -55 to 125 | °C |
| Supply Voltage (VCC) | 4.5 to 5.5 | V |
| Maximum CP Frequency | 30 | MHz |
| CP Width (Low) | 16 to 24 | ns |
| MR Pulse Width | 20 to 30 | ns |
| Setup Time, Pn to CP | 10 to 15 | ns |
| Hold Time, Pn to CP | 3 | ns |
| Input Leakage Current | ±1 | µA |
| Quiescent Device Current | 8 to 160 | µA |
Key Features
- Synchronous Counting and Loading: Counting and parallel presetting are accomplished synchronously with the negative-to-positive transition of the clock.
- Asynchronous Reset: The CD74HCT161M96 features an asynchronous reset, allowing the counter to be reset regardless of the clock state.
- Look-Ahead Carry for High-Speed Counting: This feature simplifies serial cascading of the counters and enables high-speed counting applications.
- Two Count Enable Inputs for n-Bit Cascading: PE and TE inputs allow for easy cascading of multiple counters.
- Wide Operating Temperature Range: The component operates over a wide temperature range of -55°C to 125°C.
- Balanced Propagation Delay and Transition Times: Ensures consistent and reliable operation across different conditions.
- Significant Power Reduction Compared to LSTTL Logic ICs: Offers lower power consumption compared to traditional LSTTL logic ICs.
- Direct LSTTL Input Logic Compatibility: Compatible with TTL input logic, with VIL = 0.8V (Max) and VIH = 2V (Min).
- CMOS Input Compatibility: Input leakage current is ≤1µA at VOL, VOH.
Applications
The CD74HCT161M96 is suitable for a variety of high-speed counting applications, including:
- Digital Counters and Timers: Ideal for applications requiring precise and high-speed counting.
- Sequential Logic Circuits: Used in circuits that require synchronous counting and loading.
- Automotive and Industrial Control Systems: The wide operating temperature range makes it suitable for harsh environments.
- Communication Systems: Can be used in systems requiring high-speed data processing and counting.
Q & A
- What is the operating temperature range of the CD74HCT161M96?
The operating temperature range is -55°C to 125°C.
- What is the maximum CP frequency for the CD74HCT161M96?
The maximum CP frequency is 30 MHz.
- What type of reset does the CD74HCT161M96 have?
The CD74HCT161M96 has an asynchronous reset.
- What is the purpose of the look-ahead carry feature?
The look-ahead carry feature simplifies serial cascading of the counters, enabling high-speed counting applications.
- How many count enable inputs does the CD74HCT161M96 have?
The CD74HCT161M96 has two count enable inputs (PE and TE) for n-bit cascading.
- What is the input leakage current of the CD74HCT161M96?
The input leakage current is ≤1µA at VOL, VOH.
- Is the CD74HCT161M96 compatible with TTL input logic?
Yes, it is compatible with TTL input logic, with VIL = 0.8V (Max) and VIH = 2V (Min).
- What is the quiescent device current of the CD74HCT161M96?
The quiescent device current ranges from 8 to 160 µA.
- Can the CD74HCT161M96 be used in harsh environments?
Yes, due to its wide operating temperature range, it is suitable for harsh environments such as automotive and industrial control systems.
- What is the package type of the CD74HCT161M96?
The CD74HCT161M96 is packaged in a 16-pin SOIC (D) package.
