SN74AS161DG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter
• Characteristics: High-speed, synchronous, 4-bit binary counter
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Digital logic circuit for counting binary numbers
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Logic Family: AS
• Number of Bits: 4
• Counting Sequence: Binary
• Clock Input: Synchronous
• Maximum Clock Frequency: 25 MHz
• Output Type: Standard
• Number of Pins: 16

Detailed Pin Configuration

1. VCC - Positive power supply
2. GND - Ground reference
3. CP - Clock input
4. MR - Master reset input
5. PE - Parallel enable input
6. T0 - Terminal count output
7. T1 - Terminal count output
8. T2 - Terminal count output
9. T3 - Terminal count output
10. QA - Output bit 0
11. QB - Output bit 1
12. QC - Output bit 2
13. QD - Output bit 3
14. TC - Carry output
15. CE - Count enable input
16. OE - Output enable input

Functional Features

• Synchronous operation with a common clock input
• Reset function to clear the counter to zero
• Parallel enable input for loading data in parallel
• Terminal count outputs indicate when the counter reaches its maximum value
• Carry output indicates when the counter overflows
• Count enable input to control the counting operation
• Output enable input to enable/disable the outputs

Advantages and Disadvantages

Advantages: - High-speed operation suitable for time-critical applications - Synchronous design ensures accurate counting - Reset function allows easy initialization of the counter - Compact SOIC package saves board space

Disadvantages: - Limited to 4-bit counting, not suitable for larger count ranges - Requires an external clock source for operation

Working Principles

The SN74AS161DG4 is a synchronous 4-bit binary counter. It counts from 0 to 15 in binary sequence based on the clock input. The counter can be reset to zero using the master reset input. Data can be loaded into the counter in parallel through the parallel enable input. Terminal count outputs indicate when the counter reaches its maximum value, and the carry output indicates when the counter overflows.

Detailed Application Field Plans

The SN74AS161DG4 is commonly used in various digital systems that require counting functionality. Some application fields include:

1. Digital frequency dividers
2. Event counters
3. Timekeeping circuits
4. Industrial automation systems
5. Communication equipment

Detailed and Complete Alternative Models

1. SN74LS161A - 4-bit synchronous binary counter with asynchronous reset
2. CD40161B - CMOS 4-bit synchronous binary counter
3. MC14060B - 14-stage ripple carry binary counter

These alternative models offer similar functionality but may have different specifications or package options.

Word count: 389 words