SN74LS123DR

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SN74LS123DR

IC MULTIVIBRATOR 28NS 16SOIC

  • Fabricant
  • Mfr. Partie #SN74LS123DR
  • Paquet SOIC-16
  • Fiche de données
  • En stock5639

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Spécifications

Package Tape & Reel (TR),Cut Tape (CT)
Series 74LS
ProductStatus Active
LogicType Monostable
IndependentCircuits 2
SchmittTriggerInput No
PropagationDelay 28 ns
Current-OutputHighLow 400µA, 8mA
Voltage-Supply 4.75 V ~ 5.25 V
OperatingTemperature 0°C ~ 70°C
MountingType Surface Mount
Package/Case 16-SOIC (0.154, 3.90mm Width)

Vue d'ensemble

Description

The SN74LS123DR is a dual retriggerable monostable multivibrator designed for use in various timing applications. Part of the Texas Instruments LS (Low Power Schottky) logic family, it features two independent retriggerable one-shot timers that can produce precise output pulse widths determined by external resistor-capacitor (RC) networks.
Key specifications include a wide operating voltage range (4.75V to 5.25V), fast response times (around 20ns), and low power consumption, making it suitable for high-speed digital circuits. The device can be triggered by both rising and falling edge inputs, allowing for versatile applications in frequency division, pulse width modulation, and event timing.
The SN74LS123DR is available in a 14-pin SOIC package, facilitating easy integration into various electronic designs. Overall, it is an essential component for engineers and designers looking to implement reliable timing solutions in digital circuits.

Features

The SN74LS123DR is a dual retriggerable monostable multivibrator from Texas Instruments, designed for pulse generation and timing applications. Key features include:
1. Dual Functionality: Contains two independent monostable multivibrator circuits.
2. Retriggerable: Can be retriggered during the timing interval, allowing for flexible pulse width control.
3. Adjustable Pulse Width: External resistor and capacitor configure the output pulse width, providing design flexibility.
4. TTL Compatible: Compatible with standard TTL logic levels, facilitating easy integration with other logic circuits.
5. Fast Response Time: Offers a maximum output pulse width of up to 20 ms and a propagation delay of around 35 ns.
6. Single Supply Voltage: Operates on a supply voltage range of 4.75V to 5.25V, optimizing power consumption.
7. Temperature Range: Suitable for commercial applications with a specified temperature range of 0°C to 70°C.
8. Wide Application Use: Ideal for timer applications, frequency dividers, and pulse-width modulation.
This versatile device is commonly used in various electronic systems requiring timing and control functions.

Package

The SN74LS123DR is a dual retriggerable monostable multivibrator housed in a surface mount SOIC-14 (Small Outline Integrated Circuit) package.

Pinout

The SN74LS123DR is a dual retriggerable monostable multivibrator (one-shot) integrated circuit. It has a total of 14 pins.
Here’s a brief overview of the pin functions:
1. Pin 1 (A): Trigger input A.
2. Pin 2 (B): Trigger input B.
3. Pin 3 (R): Reset input.
4. Pin 4 (Q): Output Q.
5. Pin 5 (Q'): Inverted output Q.
6. Pin 6 (GND): Ground.
7. Pin 7 (VCC): Supply voltage (typically +5V).
8. Pin 8 (C): Control voltage for timing.
9. Pin 9 (T): Timing capacitor connection.
10. Pin 10 (A): Trigger input A for the second one-shot.
11. Pin 11 (B): Trigger input B for the second one-shot.
12. Pin 12 (R): Reset input for the second one-shot.
13. Pin 13 (Q): Output Q for the second one-shot.
14. Pin 14 (Q'): Inverted output Q for the second one-shot.
This IC is primarily used in timing applications where pulse width modulation or timing delays are required.

Manufacturer

The SN74LS123DR is manufactured by Texas Instruments (TI), a prominent American technology company. Founded in 1930, Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits. The company is well-known for its innovations in analog and digital signal processing, microcontrollers, and embedded processing technologies. TI serves a wide range of markets, including automotive, industrial, communications, and consumer electronics. The SN74LS123DR is a dual retriggerable monostable multivibrator, commonly used in timing applications and pulse generation.

Application

The SN74LS123DR is a dual retriggerable monostable multivibrator used in various applications, including timers, pulse-width modulation, frequency division, and waveform generation. It is commonly utilized in automotive systems, industrial automation, and consumer electronics for generating precise timing delays, pulse shaping, and counting applications. Its ability to retrigger makes it ideal for applications requiring flexible timing control.

Equivalent

Equivalent products to the SN74LS123DR include the SN74AS123, SN74F123, and the SN74HC123. These chips are all monostable multivibrators from Texas Instruments, offering similar functionality with varying speed and power characteristics. Always check specific datasheets for compatibility in your application.

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