Rainbow-electronics BU4538B Bedienungsanleitung PDF herunterladen

Standard ICs

Dual precision monostable

multivibrator

BU4538B

The BU4538B is a monostable multivibrator that can be reset and retriggered. It is triggered from either edge of an

input pulse. As the output pulse width and accuracy are determined by the external timing constants Cx and Rx, a

wide range of accurate output pulse widths is available. Linear CMOS technology makes it possible to control the

output pulse width with greater accuracy. Determination is made based on t

WOUT = Rx · Cx throughout the entire

power supply voltage range, eliminating the necessity for other coefficients.

•

Features

1) Low power dissipation.

2) Wide range of operating power supply voltages.

3) High input impedance.

4) High fan-out.

5) Direct drive of 2 L-TTL inputs and 1 LS-TTL input.

•

Block diagram

•

Logic circuit diagram

T1A

CDA

VDD

CDB

T2B

VDD

2 (14)

1 (15)

4 (12)

Vref1 Enable

ref2

Reset Latch

Enable

VDD

Control

Output

Latch

5 (11)

3 (13)

6 (10)

7 (9)

•

Truth table

INPUT OUTPUT

ABC

D Q

LH L H

HLH

XXL L H

1 2 3 4 5

Inhaltsverzeichnis

Seite 1 - Dual precision monostable

1Standard ICsDual precision monostable multivibratorBU4538BThe BU4538B is a monostable multivibrator that can be reset and retriggered. It is triggere

Seite 2 - Standard ICs BU4538B

2Standard ICs BU4538B•Absolute maximum ratings (Ta = 25°C, VSS = 0V)Parameter Symbol Limits UnitVDD – 0.3 ~ + 18 VmW°C°CVIN – 0.3 ~ VDD + 0.3 V1000 (D

Seite 3

3Standard ICs BU4538BParameter Symbol Min. Typ. Max. Unit ConditionstTLH— 100 —ns5—— 50 — 10— 40 — 15tTHL— 100 —ns5—— 50 — 10— 40 — 15tPLHtPHL— 300 —n

Seite 4

4Standard ICs BU4538B•Timing charttW tW t2 t3 tWt1ABCDQQt1, t2, t3 < tW•Measurement circuitsP. G.P. G.P. G. CLCLVDDRXCXCDAVDD T2 T1BQQFig. 1 (a)

Seite 5

5Standard ICs BU4538BPOWER DISSIPATION: Pd (mW) 1200100080060040020000255075100125150AMBIENT TEMPERATURE: Ta (°C) Fig. 2 Power dissipation vs. Ta•El

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Rainbow-electronics BU4538B Bedienungsanleitung

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