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ManualsBrandsNXP SEMICONDUCTORS ManualsLogic ICsLogic IC - Multivibrator Monostable 35 ns SO 16
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1. General description
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 (C
EXT
) must be connected between nCEXT and
nREXT/CEXT and an external resistor (R
EXT
) must be connected between nREXT/CEXT
and V
DD
. The output pulse duration is determined by the external timing components
C
EXT
and R
EXT
. 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 V
DD
power supply range of 3 V to 15 V referenced to V
SS
(usually ground). Unused inputs must be connected to V
DD
, V
SS
, or another input.
2. Features and benefits
Fully static operation
5 V, 10 V, and 15 V parametric ratings
Standardized symmetrical output characteristics
Specified from 40 C to +85 C
Complies with JEDEC standard JESD 13-B
3. Ordering information
HEF4528B
Dual monostable multivibrator
Rev. 7 — 22 November 2011 Product data sheet
Table 1. Ordering information
All types operate from
40
C to +85
C.
Type number Package
Name Description Version
HEF4528BP DIP16 plastic dual in-line package; 16 leads (300 mil) SOT38-4
HEF4528BT SO16 plastic small outline package; 16 leads; body width 3.9 mm SOT109-1

Summary of content (17 pages)