Instrukcja obsługi Texas Instruments CD74HCT4538M96

Przeczytaj poniżej 📖 instrukcję obsługi w języku polskim dla Texas Instruments CD74HCT4538M96 (28 stron) w kategorii nieskategoryzowany. Ta instrukcja była pomocna dla 14 osób i została oceniona przez 2 użytkowników na średnio 4.5 gwiazdek

1

Data sheet acquired from Harris Semiconductor

SCHS123E

Features

•Retriggerable/Resettable Capability

•Trigger and Reset Propagation Delays Independent of

RX, CX

•Triggering from the Leading or Trailing Edge

•Q andQ Buered Outputs Available

•Separate Resets

•Wide Range of Output Pulse Widths

•Schmitt Trigger Input on A andB Inputs

•Retrigger Time is Independent of CX

•Fanout (Over Temperature Range)

-Standard Outputs. . . . . . . . . . . . . . .10 LSTTL Loads

-Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

•Wide Operating Temperature Range . . .-55oC to 125oC

•Balanced Propagation Delay and Transition Times

•Significant Power Reduction Compared to LSTTL

Logic ICs

•HC Types

-2V to 6V Operation

-High Noise Immunity: NIL = 30%, NIH = 30% of VCC

at VCC = 5V

•HCT Types

-4.5V to 5.5V Operation

-Direct LSTTL Input Logic Compatibility,

VIL= 0.8V (Max), VIH = 2V (Min)

-CMOS Input Compatibility, Il≤µ1A at VOL, VOH

Pinout

CD54HC4538, CD54HCT4538

(CERDIP)

CD74HC4538

(PDIP, SOIC, SOP, TSSOP)

CD74HCT4538

(PDIP, SOIC)

TOP VIEW

Description

The ’HC4538 and ’HCT4538 are dual

retriggerable/resettable monostableprecision multivibrators

for fixedvoltage timing applications.An externalresistor

(RX)and anexternalcapacitor(CX) control the timingand

theaccuracy forthecircuit.Adjustmentof RXand CX

provides a widerange ofoutput pulse widths from the Q and

Qterminals. Thepropagation delayfrom trigger input-to-

output transitionandthe propagationdelay from reset input-

to-output transition are independent of R

X and CX.

Leading-edge triggering (A) and trailingedge triggering (B)

inputsare providedfortriggeringfromeither edgeofthe

input pulse.An unused “A” input shouldbe tied to GND and

an unusedB should be tiedto VCC. On power up the IC is

reset. Unusedresets andsectionsmust be terminated.In

normal operation the circuit retriggers on the application of

each new trigger pulse.To operate in the non-triggerable

mode Q is connected toB when leading edge triggering (A)

is used orQ is connected to Awhen trailing edge triggering

(B) is used. The period () can be calculated from= (0.7)τ τ

RX, CX; RMIN is 5k. CΩMIN is 0pF.

14

15

16

9

13

12

11

10

1

2

3

4

5

7

6

8

1C

X

1R

X

C

X

1R

1A

1B

1Q

GND

1Q

V

CC

2R

X

C

X

2R

2A

2B

2Q

2Q

2C

X

Ordering Information

PART NUMBER

TEMP. RANGE

(oC) PACKAGE

CD54HC4538F3A-55 to 12516 Ld CERDIP

CD54HCT4538F3A-55 to 12516 Ld CERDIP

CD74HC4538E-55 to 12516 Ld PDIP

CD74HC4538M-55 to 12516 Ld SOIC

CD74HC4538MT-55 to 12516 Ld SOIC

CD74HC4538M96-55 to 12516 Ld SOIC

CD74HC4538NSR-55 to 12516 Ld SOP

CD74HC4538PW-55 to 12516 Ld TSSOP

CD74HC4538PWR-55 to 12516 Ld TSSOP

CD74HC4538PWT-55 to 12516 Ld TSSOP

CD74HCT4538E-55 to 12516 Ld PDIP

CD74HCT4538M-55 to 12516 Ld SOIC

CD74HCT4538MT-55 to 12516 Ld SOIC

CD74HCT4538M96-55 to 12516 Ld SOIC

NOTE:When ordering, usethe entirepart number. Thesuffixes96

and Rdenote tape andreel. Thesuffix T denotesa small-quantity

reel of 250.

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

Copyright © 2003, Texas Instruments Incorporated

CD54HC4538, CD74HC4538,

CD54HCT4538, CD74HCT4538

High-Speed CMOS Logic Dual Retriggerable

Precision Monostable Multivibrator

[ /Title

(CD54

HC453

8,

CD74

HC453

8,

CD74

HCT45

38)

/Sub-

ject

(High

Speed

CMOS

Logic

June 1998 - Revised October 2003

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