- RS Stock No.:
- 170-8002
- Mfr. Part No.:
- HEF4538BT,653
- Manufacturer:
- Nexperia
- RS Stock No.:
- 170-8002
- Mfr. Part No.:
- HEF4538BT,653
- Manufacturer:
- Nexperia
Product overview and Technical data sheets
Legislation and Compliance
Product Details
4000 Series Multivibrators & Timers, Nexperia
The HEF4538B is a dual retriggerable-resettable monostable multivibrator. Each 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 10 μs to infinity. The duration and accuracy of the output pulse are determined by the external timing components CEXT and REXT.
Simple control interface
Power on reset
Dual devices with separate reset inputs
Negative or positive edge triggered
CMOS low power
Key applications
Timing delays in control circuits
Power on reset
Dual devices with separate reset inputs
Negative or positive edge triggered
CMOS low power
Key applications
Timing delays in control circuits
For products that are Customized and under Non-cancellable & Non-returnable, Sales & Conditions apply.
4000 CMOS Logic Family, Nexperia
CMOS Family devices
Wide operating voltage range: 3 to 18V
Wide operating voltage range: 3 to 18V
Specifications
Attribute | Value |
---|---|
Logic Family | HEF |
Logic Function | Monostable Multivibrator |
Number of Elements per Chip | 2 |
Maximum High Level Output Current | -2.4mA |
Maximum Low Level Output Current | 2.4mA |
Minimum Pulse Width | 90 ns |
Maximum Propagation Delay Time @ Maximum CL | 460 ns @ 50 pF |
Mounting Type | Surface Mount |
Package Type | SO |
Pin Count | 16 |
Dimensions | 10 x 4 x 1.45mm |
Height | 1.45mm |
Length | 10mm |
Minimum Operating Temperature | -40 °C |
Maximum Operating Temperature | +125 °C |
Propagation Delay Test Condition | 50pF |
Maximum Operating Supply Voltage | 15 V |
Minimum Operating Supply Voltage | 3 V |
Width | 4mm |