Overview
The HEF4528BT/AU118 is a dual retriggerable-resettable monostable multivibrator produced by NXP USA Inc. This integrated circuit is part of the HEF4000 family and is designed to provide reliable and versatile timing functions in various electronic systems. Each multivibrator within the IC has an active LOW input (nA), an active HIGH input (nB), an active LOW clear direct input (nCD), an output (nQ) and its complement (nQ'), and two external timing component connecting pins (nCEXT and nREXT/CEXT). The device operates over a wide supply voltage range from 3 V to 15 V, making it suitable for a broad range of applications.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Type Number | HEF4528BT | Dual monostable multivibrator |
| VCC (V) | 3.0 - 15 | Supply voltage range |
| Logic Switching Levels | CMOS | Logic family |
| Output Drive Capability (mA) | ± 2.4 | Maximum output current |
| tpd (ns) | 40 | Propagation delay |
| Power Dissipation | Medium | Power consumption level |
| Tamb (°C) | -40 to +85 | Operating temperature range |
| Package | SO16 (SOT109-1) | Package type |
Key Features
- Dual Retriggerable-Resettable Monostable Multivibrator: Each multivibrator can be triggered and reset independently.
- Wide Supply Voltage Range: Operates from 3 V to 15 V, making it versatile for various applications.
- CMOS Low Power Dissipation: Low power consumption, suitable for energy-efficient designs.
- High Noise Immunity: Complies with JEDEC standards for ESD protection (HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V).
- Standardized Symmetrical Output Characteristics: Ensures consistent output signals.
- External Timing Components: Allows for adjustable pulse duration using external capacitor and resistor.
Applications
- De-bouncing Switch Contacts: Useful for stabilizing switch inputs in digital circuits.
- Timing and Pulse Generation: Ideal for generating precise timing pulses in various electronic systems.
- Automotive and Industrial Systems: Suitable for use in automotive, industrial, and other applications requiring reliable timing functions.
- Consumer and Mobile Devices: Can be used in consumer electronics and mobile devices for timing and pulse generation needs.
Q & A
- What is the HEF4528BT/AU118?
The HEF4528BT/AU118 is a dual retriggerable-resettable monostable multivibrator IC produced by NXP USA Inc.
- What is the supply voltage range of the HEF4528BT?
The supply voltage range is from 3 V to 15 V.
- What type of logic family does the HEF4528BT belong to?
The HEF4528BT belongs to the CMOS logic family.
- How is the output pulse duration determined?
The output pulse duration is determined by the external timing components, specifically the capacitor and resistor connected to the nCEXT and nREXT/CEXT pins.
- What are the operating temperature limits of the HEF4528BT?
The operating temperature range is from -40 °C to +85 °C.
- What package type is the HEF4528BT available in?
The HEF4528BT is available in the SO16 (SOT109-1) package.
- What are some common applications of the HEF4528BT?
Common applications include de-bouncing switch contacts, timing and pulse generation, and use in automotive, industrial, consumer, and mobile devices.
- Does the HEF4528BT have built-in ESD protection?
Yes, it complies with JEDEC standards for ESD protection (HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V).
- How do I trigger the multivibrator?
A HIGH-to-LOW transition on nA when nB is LOW or a LOW-to-HIGH transition on nB when nA is HIGH produces a pulse.
- What happens when the clear input (nCD) is LOW?
A LOW on nCD forces nQ LOW, nQ' HIGH, and inhibits any further pulses until nCD is HIGH.
