SN74LS194ADG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Shift Register
• Characteristics: High-speed, TTL Logic, 4-bit parallel access
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Serial-in, parallel-out shift register with synchronous operation
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 4.75V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Input Voltage High: 2V min
• Input Voltage Low: 0.8V max
• Output Voltage High: 2.7V min
• Output Voltage Low: 0.4V max
• Maximum Clock Frequency: 25 MHz

Detailed Pin Configuration

The SN74LS194ADG4 has a total of 16 pins. The pin configuration is as follows:

1. SER (Serial Data Input)
2. QA (Parallel Output A)
3. QB (Parallel Output B)
4. QC (Parallel Output C)
5. QD (Parallel Output D)
6. GND (Ground)
7. MR (Master Reset)
8. CP (Clock Pulse Input)
9. DS (Data Selector)
10. OE (Output Enable)
11. S0 (Select Input 0)
12. S1 (Select Input 1)
13. S2 (Select Input 2)
14. VCC (Supply Voltage)
15. QH (Serial Output)
16. CLK INH (Clock Inhibit)

Functional Features

• Serial-in, parallel-out operation
• Synchronous operation with clock pulse input
• Master reset for clearing the register
• Select inputs for data selection
• Output enable for controlling the output state
• High-speed operation suitable for various applications

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick data processing - Synchronous operation ensures accurate timing - Compact SOIC package saves space on the circuit board - Versatile use in various applications

Disadvantages: - Limited to 4-bit parallel access - Requires external clock pulse for operation - Not suitable for applications requiring larger data storage

Working Principles

The SN74LS194ADG4 is a 4-bit serial-in, parallel-out shift register. It receives data serially through the SER pin and stores it internally. The stored data can be accessed in parallel through the QA, QB, QC, and QD pins. The CP pin is used to provide clock pulses that synchronize the shifting of data. The MR pin is used to clear the register, resetting all outputs to low. The DS pin selects between serial or parallel mode of operation. The OE pin enables or disables the output state.

Detailed Application Field Plans

The SN74LS194ADG4 is commonly used in various applications, including:

1. Data communication systems
2. Digital displays
3. Industrial control systems
4. Counters and timers
5. Serial-to-parallel data conversion
6. Shift register-based memory devices

Detailed and Complete Alternative Models

Some alternative models to the SN74LS194ADG4 include:

1. CD4015BE: CMOS Dual 4-Stage Static Shift Register
2. 74HC595: 8-Bit Serial-In, Parallel-Out Shift Register
3. CD4021BE: CMOS 8-Stage Static Shift Register
4. 74LS164: 8-Bit Serial-In, Parallel-Out Shift Register
5. CD4094BE: CMOS 8-Stage Shift-and-Store Bus Register

These alternative models offer similar functionality and can be used as replacements depending on specific requirements.

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