Overview
The CD74HC123M96 is a dual monostable multivibrator with resets, produced by Texas Instruments. This component is part of the 74HC series, known for its high-speed CMOS logic. It is designed to generate a single pulse of a fixed duration in response to a trigger input. The device is retriggerable, meaning the output pulse width can be extended by additional trigger inputs. The CD74HC123M96 is available in a 16-pin SOIC package and operates over a wide temperature range of -55°C to 125°C.
Key Specifications
| Parameter | Symbol | Test Conditions | Min | Typ | Max |
|---|---|---|---|---|---|
| DC Supply Voltage | VCC | - | 2 | - | 6 |
| High Level Input Voltage | VIH | VCC = 5V | 3.7 | - | VCC |
| Low Level Input Voltage | VIL | VCC = 5V | 0 | - | 1.3 |
| High Level Output Voltage (CMOS Loads) | VOH | VCC = 5V, IOH = -20mA | 4.4 | - | VCC - 0.1 |
| Low Level Output Voltage (CMOS Loads) | VOL | VCC = 5V, IOL = 20mA | 0 | - | 0.1 |
| Input Leakage Current | II | VCC = 5V, VIN = VCC or GND | - | ±1 | ±1 |
| Quiescent Device Current | ICC | VCC = 5V, VIN = VCC or GND | - | 8 | 80 |
| Trigger Propagation Delay (A, B, R to Q) | tPLH | VCC = 5V, CL = 50pF | 60 | - | 90 |
| Reset Propagation Delay (R to Q or Q) | tPHL, tPLH | VCC = 5V, CL = 50pF | 48 | - | 72 |
| Output Pulse Width | tW | RX = 10KΩ, CX = 10nF | 38.7 | - | 51.3 |
Key Features
- Retriggerable: The output pulse width can be extended by additional trigger inputs on A and B.
- Dual Monostable Multivibrator: Provides two independent monostable multivibrators in a single package.
- Reset Capability: Each multivibrator has a reset input (R) that can terminate the output pulse.
- Edge Triggering: Triggers on either the leading edge (B) or trailing edge (A) of the input pulse.
- Adjustable Pulse Width: The pulse width is controlled by external resistor (RX) and capacitor (CX), allowing for a wide range of pulse widths.
- High-Speed CMOS Logic: Compatible with CMOS and TTL logic levels.
- Wide Operating Temperature Range: Operates from -55°C to 125°C.
Applications
- Pulse Generation: Used in circuits requiring a single pulse of a fixed duration in response to a trigger input.
- Timing Circuits: Suitable for applications needing adjustable timing signals.
- Resettable Timers: Ideal for systems that require a timer that can be reset or retriggered.
- Digital Logic Circuits: Can be integrated into various digital logic circuits requiring monostable multivibrator functions.
- Industrial Control Systems: Used in industrial control systems for timing and pulse generation.
Q & A
- What is the CD74HC123M96?
The CD74HC123M96 is a dual monostable multivibrator with resets, part of the 74HC series from Texas Instruments.
- What is the operating temperature range of the CD74HC123M96?
The device operates from -55°C to 125°C.
- How is the pulse width controlled in the CD74HC123M96?
The pulse width is controlled by an external resistor (RX) and an external capacitor (CX).
- Can the output pulse be extended in the CD74HC123M96?
- What are the trigger inputs for the CD74HC123M96?
The device has trailing edge triggering (A) and leading edge triggering (B) inputs.
- How can the output pulse be terminated in the CD74HC123M96?
The output pulse can be terminated by a LOW level on the Reset (R) pin.
- What is the typical quiescent device current for the CD74HC123M96?
The typical quiescent device current is 8 µA at VCC = 5V.
- Is the CD74HC123M96 compatible with TTL logic levels?
- What is the package type for the CD74HC123M96?
The device is available in a 16-pin SOIC package.
- Is the CD74HC123M96 suitable for industrial control systems?
