Overview
The CD74HCT123M96G4 is a high-speed CMOS logic dual retriggerable monostable multivibrator with reset, manufactured by Texas Instruments. This component is part of the 74HCT series, which is known for its compatibility with TTL (Transistor-Transistor Logic) inputs and CMOS (Complementary Metal-Oxide-Semiconductor) outputs. The device is packaged in a 16-pin SOIC (Small Outline Integrated Circuit) package and operates over a wide temperature range of -55°C to 125°C.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 16 | - |
| Operating Temperature Range | -55 to 125 | °C |
| VCC (Supply Voltage) | 4.5 to 5.5 | V |
| High Level Input Voltage (VIH) | 2 (Min) | V |
| Low Level Input Voltage (VIL) | 0.8 (Max) | V |
| High Level Output Voltage (VOH) - CMOS Loads | 4.4 (Typ) at VCC = 5V | V |
| Low Level Output Voltage (VOL) - CMOS Loads | 0.1 (Typ) at VCC = 5V | V |
| Input Leakage Current (II) | ±1 µA | - |
| Quiescent Device Current (ICC) | 80 µA (Max) at VCC = 5V | - |
| Trigger Propagation Delay (tPLH) | 60 to 90 ns at VCC = 5V | ns |
| Output Pulse Width (tW) | 38.7 to 51.3 µs (Typ) with RX = 10KΩ, CX = 10nF | µs |
Key Features
- Overriding Reset Terminates Output Pulse
- Triggering From the Leading or Trailing Edge
- Q and Q Buffered Outputs
- Separate Resets
- Wide Range of Output-Pulse Widths controlled by external resistor (RX) and capacitor (CX)
- Schmitt Trigger on Both A and B Inputs
- High Noise Immunity
- Direct LSTTL Input Logic Compatibility
- CMOS Input Compatibility
- Significant Power Reduction Compared to LSTTL Logic ICs
- Balanced Propagation Delay and Transition Times
Applications
The CD74HCT123M96G4 is suitable for a variety of applications requiring precise timing and pulse generation. These include:
- Pulse generators and timing circuits
- Frequency dividers and counters
- Sequential logic circuits
- Automotive and industrial control systems
- Communication equipment and networking devices
Q & A
- What is the operating temperature range of the CD74HCT123M96G4?
The operating temperature range is -55°C to 125°C. - What is the supply voltage range for the CD74HCT123M96G4?
The supply voltage range is 4.5V to 5.5V. - How is the output pulse width controlled in the CD74HCT123M96G4?
The output pulse width is controlled by an external resistor (RX) and an external capacitor (CX). - What types of inputs can trigger the CD74HCT123M96G4?
The device can be triggered by both leading and trailing edges of the input pulse. - How can the output pulse be terminated?
The output pulse can be terminated by a LOW level on the Reset (R) pin. - What is the typical trigger propagation delay for the CD74HCT123M96G4?
The typical trigger propagation delay is 60 to 90 ns at VCC = 5V. - Is the CD74HCT123M96G4 compatible with TTL inputs?
Yes, it has direct LSTTL input logic compatibility. - What is the quiescent device current for the CD74HCT123M96G4?
The quiescent device current is up to 80 µA at VCC = 5V. - Can the CD74HCT123M96G4 be used in automotive applications?
Yes, it is suitable for automotive and industrial control systems due to its wide operating temperature range. - Is the CD74HCT123M96G4 still recommended for new designs?
No, the device is not recommended for new designs as it is in the 'Not Recommended for New Designs' (NRND) status by Texas Instruments.
