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Updated at 01/11/2025 10:30:15(UTC+8)

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Description

The HEF4538BP is a dual retriggerable-resettable Monostable Multivibrator has an active low trigger/retrigger input (nA\\), an active high trigger/retrigger input (nB), an overriding active low direct reset input (nCD\\), an output (nQ) and its complement (nQ\\) and two pins (nREXT/CEXT and nCEXT, always connected to ground) for connecting the external timing components CEXT and REXT. Typical pulse width variation over the specified temperature range is ±0.2%. The multivibrator may be triggered by either the positive or the negative edges of the input pulse and will produce an accurate output pulse with a pulse width range of 10µs to infinity. The duration and accuracy of the output pulse are determined by the external timing components CEXT and REXT. The output pulse width (tW) is equal to REXT x CEXT. The linear design techniques in LOCMOS (Local Oxide CMOS) guarantee precise control of the output pulse width. A low level at nCD\ terminates the output pulse immediately.
Fully static operation
Standardized symmetrical output characteristics
Complies with JEDEC standard JESD 13-B
Tolerant of slow trigger rise and fall times

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HEF4538BP Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Through Hole
Number of Pins	16 Pin
Case/Package	DIP
Supply Voltage (DC)	4.50V (min)
Output Current	2.4 mA
Number of Positions	16 Position
Number of Gates	2 Gate
Rise Time	20.0 ns
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage (Max)	15.5 V
Supply Voltage (Min)	4.5 V
	Show
Product Lifecycle Status	Unknown
Packaging	Each
RoHS	RoHS Compliant
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/12/17

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