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Part: HEF4528BDB
Category:
Logic
-> Multivibrators/Oscillators
Description: HEF4528B MSI; Dual Monostable Multivibrator;; Package: SOT109-1 (SO16), SOT38-1 (DIP16)
Company: Philips Semiconductors
Datasheet: Download HEF4528BDB datasheet File size : 321 kB
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Datasheet text preview:
INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
· The IC04 LOCMOS HE4000B Logic Family Specifications HEF, HEC · The IC04 LOCMOS HE4000B Logic Package Outlines/Information HEF, HEC
HEF4528B MSI Dual monostable multivibrator
Product specification File under Integrated Circuits, IC04 January 1995
Philips Semiconductors
Product specification
Dual monostable multivibrator
DESCRIPTION The HEF4528B is a dual retriggerable-resettable monostable multivibrator. Each multivibrator has an active LOW input (I0), and active HIGH input (I1), an active LOW clear direct input (CD), an output (O) and its complement (O), and two pins for connecting the external timing components (CTC(1), RCTC). An external timing capacitor (Ct ) must be connected between CTC and RCTC and an external resistor (Rt) must be connected between RCTC and VDD. The duration of the
(1) Always connected to ground.
HEF4528B MSI
output pulse is determined by the external timing components Ct and Rt. A HIGH to LOW transition on I0 when I1 is LOW or a LOW to HIGH transition on I1 when I0 is HIGH produces a positive pulse (LOW-HIGH-LOW) and O and a negative pulse (HIGH-LOW-HIGH) on O if the CD is HIGH. A LOW
Fig.2 Pinning diagram.
HEF4528BP(N): HEF4528BD(F): HEF4528BT(D):
16-lead DIL; plastic (SOT38-1) 16-lead DIL; ceramic (cerdip) (SOT74) 16-lead SO; plastic (SOT109-1)
( ): Package Designator North America PINNING I0A, I0B I1A, I1B CDA, CDB OA, OB OA, OB CTC A, CTC B RCTC A, RCTC B input (HIGH to LOW triggered) input (LOW to HIGH triggered) clear direct input (active LOW) output complementary output (active LOW) external capacitor connections (1) external capacitor/ resistor connections
Fig.1 Functional diagram. on CD forces O LOW, O HIGH and inhibits any further pulses until CD is HIGH.
FAMILY DATA, IDD LIMITS category MSI See Family Specifications
January 1995
2
Philips Semiconductors
Product specification
Dual monostable multivibrator
HEF4528B MSI
Fig.3 Logic diagram (one monostable multivibrator).
January 1995
3
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