Overview
The 74HC4538PW-Q100118 is a dual retriggerable-resettable monostable multivibrator produced by Nexperia. This device is part of the 74HC family and is qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1), making it suitable for automotive applications. Each multivibrator features two trigger/retrigger inputs (nA and nB), a direct reset input (nCD), two complementary outputs (nQ and nQ), and pins for connecting external timing components CEXT and REXT. The output pulse width is precisely controlled by these external components, with a typical pulse width variation over temperature range of ± 0.2 %.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|
| 74HC4538PW-Q100118 | 2.0 - 6.0 | CMOS | ± 5.2 | 27 | Low | -40 to +125 | 109 | 1 | 37 | TSSOP16 |
Key Features
- Wide supply voltage range from 2.0 to 6.0 V
- CMOS low power dissipation
- CMOS input levels
- High noise immunity
- Tolerant of slow trigger rise and fall times
- Separate reset inputs
- Triggering from falling or rising edge
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
- Complies with JEDEC standards (JESD8C and JESD7A)
- ESD protection: HBM exceeds 2000 V, CDM exceeds 1000 V
Applications
The 74HC4538PW-Q100118 is suitable for various applications, particularly in the automotive sector due to its AEC-Q100 (Grade 1) qualification. It can be used in timing and pulse generation circuits, where precise control over the output pulse width is required. Other applications include industrial control systems, medical devices, and any system requiring reliable and precise timing signals.
Q & A
- What is the primary function of the 74HC4538PW-Q100118? The primary function is to act as a dual retriggerable-resettable monostable multivibrator.
- What is the supply voltage range for this device? The supply voltage range is from 2.0 to 6.0 V.
- How is the output pulse width controlled? The output pulse width is controlled by external timing components CEXT and REXT.
- What is the temperature range for this device? The device is specified from -40 °C to +125 °C.
- Does the device have ESD protection? Yes, it has ESD protection: HBM exceeds 2000 V, CDM exceeds 1000 V.
- What package type is used for this device? The device is packaged in a TSSOP16 (SOT403-1).
- Is the device RoHS compliant? Yes, the device is RoHS compliant.
- Can the device be triggered by both rising and falling edges? Yes, the device can be triggered by both rising and falling edges of the input pulse.
- What is the typical pulse width variation over temperature range? The typical pulse width variation over temperature range is ± 0.2 %.
- Does the device have separate reset inputs? Yes, the device has separate reset inputs.
