HEF4528BT: Dual monostable multivibrator
The HEF4528B is a dual retriggerable-resetable monostable multivibrator. Each
multivibrator has an active LOW input (nA), and 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, always connected to ground, and nREXT/CEXT).
An external timing capacitor (CEXT) must be connected between nCEXT and
nREXT/CEXT and an external resistor (REXT) must be connected between nREXT/CEXT
and VDD. The output pulse duration is determined by the external timing components
CEXT and REXT. 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 positive pulse (LOW-HIGH-LOW) on nQ
and a negative pulse (HIGH-LOW-HIGH) on nQ if the nCD is HIGH. A LOW on nCD
forces nQ LOW, nQ HIGH and inhibits any further pulses until nCD is HIGH.
It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS
(usually ground). Unused inputs must be connected to VDD, VSS, or another input.
HEF4528BT: Product Block Diagram
sot109-1_3d
Data Sheets (1)
Application Notes (1)
Brochures (2)
Package Information (1)
Supporting Information (2)
Ordering Information
| Product | Status | Family | Function | VCC (V) | Logic switching levels | Description | Package version | Output drive capability (mA) | tpd (ns) | Power dissipation considerations | Tamb (Cel) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name | No of pins |
|---|
| HEF4528BT | Active | HEF4000B | Multivibrators | 4.5 - 15.5 | CMOS | dual retriggerable monostable multivibrator with reset | SOT109-1 | +/- 2.4 | 40 | medium | -40~85 | 82 | 5.0 | 40.7 | SO16 | 16 |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | EFR | IFR(FIT) | MTBF(hour) | MSL | MSL LF |
|---|
| HEF4528BT | | SOT109-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE
SO-SOJ-REFLOW
SO-SOJ-WAVE | Reel 13" Q1/T1 CECC | Active | HEF4528BT,653
(9333 732 60653) | HEF4528BT | HEF4528BT |    | week 6, 2004 | 75.3 | 2.99 | 3.34E8 | 1 | 1 |
| Bulk Pack, CECC | Active | HEF4528BT,652
(9333 732 60652) | HEF4528BT | HEF4528BT | | week 6, 2004 | 75.3 | 2.99 | 3.34E8 | 1 | 1 |
