74HCT4538PW,112

Multivibrators Overview

The Nexperia 74HCT4538PW,112 is a dual retriggerable-resettable monostable multivibrator housed in a TSSOP16 (SOT403-1) package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device features two independent circuits, each with complementary outputs (nQ and nQ), direct reset inputs (nCD), and trigger inputs (nA, nB). Pulse width is determined by external components REXT and CEXT using the formula TW = 0.7 × REXT × CEXT. Propagation delay ranges from 35 ns to 90 ns depending on conditions.

Multivibrators Feature Summary

• Retriggerable design allows pulse lengthening via subsequent trigger edges
• Schmitt-trigger inputs provide tolerance for slow rise and fall times
• Complementary outputs enable flexible logic interfacing
• Direct reset input terminates output pulses immediately

Multivibrators Applications

• Pulse generation and timing control
• Debouncing switches or contacts
• Frequency division circuits
• Timer applications requiring precise pulse widths

Multivibrators Procurement Notes

Verify the ordering suffix matches the required temperature range (-40 °C to +125 °C) and package type (TSSOP16). Confirm that the specific part number variant aligns with your system's voltage and interface requirements before procurement.

Multivibrators Selection Notes

Select this component when dual precision monostable functionality is required with TTL-compatible input levels. Ensure external timing components are rated for the expected operating temperature range to maintain pulse width accuracy.

Multivibrators Part Context

This part belongs to the 74HCT series of CMOS logic devices, designed for compatibility with standard TTL logic families. The HCT designation indicates high-speed CMOS technology with TTL-compatible input thresholds, suitable for mixed 5V and 3.3V systems.

Multivibrators Replacement Considerations

Check for equivalent parts from other manufacturers offering dual monostable multivibrators in TSSOP16 packages. Verify pinout compatibility and electrical specifications such as propagation delay and supply voltage range.