SN74LS169BN

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter/Shift Register
• Characteristics: High-speed, synchronous, 4-bit binary counter/shift register
• Package: DIP (Dual In-line Package)
• Essence: The SN74LS169BN is a versatile IC that can function as both a counter and a shift register. It offers high-speed operation and synchronous counting/shift capabilities.
• Packaging/Quantity: The SN74LS169BN is typically sold in packs of 25 units.

Specifications

• Supply Voltage: 4.75V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 55 MHz
• Number of Bits: 4
• Logic Family: LS-TTL (Low-power Schottky Transistor-Transistor Logic)

Detailed Pin Configuration

The SN74LS169BN has a total of 16 pins, each serving a specific purpose. Here is the detailed pin configuration:

1. CP (Clock Pulse) - Input
2. P0 (Parallel Data Input) - Input
3. P1 (Parallel Data Input) - Input
4. P2 (Parallel Data Input) - Input
5. P3 (Parallel Data Input) - Input
6. GND (Ground) - Ground
7. Q0 (Serial Output) - Output
8. Q1 (Serial Output) - Output
9. Q2 (Serial Output) - Output
10. Q3 (Serial Output) - Output
11. MR (Master Reset) - Input
12. PE (Parallel Enable) - Input
13. TE (Terminal Count Enable) - Input
14. TC (Terminal Count) - Output
15. VCC (Supply Voltage) - Power
16. CE (Clock Enable) - Input

Functional Features

• Counter Mode: In this mode, the SN74LS169BN acts as a 4-bit binary counter. The parallel data inputs (P0-P3) are used to set the initial count value, and the clock pulse (CP) increments the count on each rising edge.
• Shift Register Mode: In this mode, the IC functions as a 4-bit shift register. The parallel data inputs (P0-P3) are serially shifted out through the serial outputs (Q0-Q3) upon each clock pulse.
• Reset and Enable: The master reset (MR) input allows resetting the counter/shift register to its initial state. The clock enable (CE) and parallel enable (PE) inputs control the clocking and parallel loading operations, respectively.
• Terminal Count: The terminal count (TC) output goes high when the counter reaches its maximum count value, providing a signal for external circuitry.

Advantages and Disadvantages

Advantages: - High-speed operation - Versatile functionality as both a counter and a shift register - Synchronous counting/shift capabilities - LS-TTL logic family provides low-power consumption

Disadvantages: - Limited to 4-bit counting/shift operations - Requires external circuitry for more complex applications

Working Principles

The SN74LS169BN operates based on synchronous counting and shifting principles. In counter mode, the parallel data inputs set the initial count value, and the clock pulse increments the count on each rising edge. In shift register mode, the parallel data inputs are serially shifted out through the serial outputs upon each clock pulse. The master reset input allows resetting the counter/shift register to its initial state, while the clock enable and parallel enable inputs control the clocking and parallel loading operations, respectively.

Detailed Application Field Plans

The SN74LS169BN finds applications in various fields, including: - Digital counters - Serial-to-parallel data conversion - Data storage and retrieval systems - Frequency division circuits - Industrial automation - Communication systems

Detailed and Complete Alternative Models

Some alternative models to the SN74LS169BN that offer similar functionality include: - CD40161B: 4-bit synchronous binary counter/shift register - MC74HC595: 8-bit serial-in, serial or parallel-out shift register - 74HC191: 4-bit synchronous up/down binary counter

These alternative models can be considered based on specific requirements and compatibility with existing circuitry.

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