Overview
The MC14538BCPG, produced by onsemi, is a dual, retriggerable, and resettable monostable multivibrator. This component is designed to generate accurate output pulses over a wide range of widths, determined by external timing components. It can be triggered from either the positive or negative edge of an input pulse, making it versatile for various applications. The device operates within a voltage range of 3.0 Vdc to 18 Vdc and is capable of driving low-power TTL loads. It is also pin-for-pin compatible with other similar devices like the MC14528B and CD4528B, and it is RoHS compliant and Pb-free.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Supply Voltage Range | -0.5 to +18.0 | V |
| Input or Output Voltage Range | -0.5 to VDD + 0.5 | V |
| Input or Output Current per Pin | ±10 | mA |
| Power Dissipation per Package | 500 | mW |
| Operating Temperature Range | -55 to +125 | °C |
| Pulse Width Range | 10 μs to 10 s | s |
| External Timing Resistance (RX) | Up to 1 MΩ (dependent on capacitor leakage) | Ω |
| External Timing Capacitance (CX) | No limit (use discharge protection diode for CX > 15 μF) | F |
Key Features
- Unlimited rise and fall time allowed on the A trigger input
- Pulse width range from 10 μs to 10 s
- Latched trigger inputs and separate latched reset inputs
- Triggerable from positive (A input) or negative-going edge (B input)
- Capable of driving two low-power TTL loads or one low-power Schottky TTL load
- Pin-for-pin compatible with MC14528B and CD4528B
- NLV prefix for automotive and other applications requiring unique site and control change requirements; AEC-Q100 qualified and PPAP capable
- Pb-free and RoHS compliant
Applications
The MC14538BCPG is suitable for a variety of applications where precise timing and pulse generation are required. These include:
- Timing and pulse generation in digital circuits
- Automotive systems requiring AEC-Q100 qualification
- Industrial control systems
- Medical devices needing precise timing
- Telecommunication equipment
Q & A
- What is the MC14538BCPG?
The MC14538BCPG is a dual, retriggerable, and resettable monostable multivibrator produced by onsemi.
- What is the operational voltage range of the MC14538BCPG?
The device operates within a voltage range of 3.0 Vdc to 18 Vdc.
- How can the MC14538BCPG be triggered?
It can be triggered from either the positive or negative edge of an input pulse.
- What is the pulse width range of the MC14538BCPG?
The pulse width range is from 10 μs to 10 s.
- Is the MC14538BCPG compatible with other devices?
Yes, it is pin-for-pin compatible with MC14528B and CD4528B.
- What are the environmental operating conditions for the MC14538BCPG?
The operating temperature range is -55 to +125 °C.
- How does the retrigger feature work?
The device can be retriggered if a valid trigger occurs before the Q output has returned to the quiescent state, extending the output pulse width.
- Can the MC14538BCPG be reset during pulse generation?
Yes, it can be reset during the generation of the output pulse using the reset input.
- Is the MC14538BCPG RoHS compliant?
Yes, it is Pb-free and RoHS compliant.
- What are some typical applications for the MC14538BCPG?
It is used in timing and pulse generation in digital circuits, automotive systems, industrial control systems, medical devices, and telecommunication equipment.
