MC74ACT161D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Counter
• Characteristics: High-speed, synchronous, 4-bit binary counter
• Package: Dual-In-Line Package (DIP)
• Essence: The MC74ACT161D is a versatile counter IC that can be used in various digital applications.
• Packaging/Quantity: Available in tubes or reels, with 25 units per tube/reel.

Specifications

• Supply Voltage: 2.0V to 6.0V
• Operating Temperature Range: -55°C to +125°C
• Logic Family: ACT
• Number of Bits: 4
• Clock Frequency: Up to 100MHz
• Propagation Delay: 5ns (typical)
• Output Drive Capability: ±24mA

Pin Configuration

The MC74ACT161D has a total of 16 pins, which are assigned specific functions as follows:

1. Clock Enable (CE)
2. Asynchronous Clear (CLR)
3. Parallel Load (PL)
4. Data Inputs (D0-D3)
5. Carry Output (CO)
6. Clock Input (CLK)
7. Ripple Clock Output (RCO)
8. Binary Outputs (Q0-Q3) 9-16. Ground (GND) and Power Supply (VCC) Pins

Functional Features

• Synchronous Operation: The MC74ACT161D operates synchronously with the clock signal, ensuring accurate counting.
• Parallel Load: Allows the initial value to be loaded into the counter using the parallel load input.
• Asynchronous Clear: Clears the counter to its initial state when the asynchronous clear input is activated.
• Carry Output: Provides a carry signal when the counter reaches its maximum count.
• Ripple Clock Output: Generates a clock signal that ripples through multiple counters when cascading them.

Advantages and Disadvantages

Advantages: - High-speed operation - Versatile counter for various applications - Synchronous operation ensures accurate counting - Compact DIP package for easy integration

Disadvantages: - Limited number of bits (4-bit) - Requires external components for more complex counting sequences

Working Principles

The MC74ACT161D is a synchronous, 4-bit binary counter. It counts up or down based on the clock input and other control signals. The counter can be cleared to its initial state using the asynchronous clear input. The parallel load input allows the initial value to be loaded into the counter. When the counter reaches its maximum count, the carry output becomes active. The ripple clock output is used when cascading multiple counters together.

Detailed Application Field Plans

The MC74ACT161D can be used in various digital applications, including but not limited to:

1. Frequency Division: Dividing an input clock frequency by a specific factor.
2. Event Counting: Counting the occurrence of specific events.
3. Time Delay Generation: Generating precise time delays.
4. Address Decoding: Decoding addresses in memory systems.
5. Sequence Generation: Generating specific sequences of numbers.

Alternative Models

Here are some alternative models that offer similar functionality to the MC74ACT161D:

1. SN74LS161A: 4-bit synchronous binary counter with asynchronous clear.
2. CD40161B: CMOS presettable 4-bit synchronous binary counter.
3. 74HC161: High-speed Si-gate CMOS device with 4-bit synchronous binary counter.

These alternative models provide different trade-offs in terms of speed, power consumption, and additional features.

In conclusion, the MC74ACT161D is a versatile and high-speed 4-bit binary counter IC. It offers synchronous operation, parallel load capability, and various control features. With its compact DIP package, it can be easily integrated into digital circuits for a wide range of applications.