Datasheet > HCC4541B_07

HCC4541B_07

更新时间： 2024-11-12 04:10:47

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
11页	249K
描述
PROGRAMMABLE TIMER

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数据手册

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HCC4541B_07 数据手册

HCC4541B

HCF4541B

PROGRAMMABLE TIMER

16 STAGE BINARI COUNTER

LOW SYMMETRICAL OUTPUT RESISTANCE,

TYPICALLY 100 OHM AT V_DD= 15V

OSCILLATOR FREQUENCY RANGE : DC TO

100kHz

AUTO OR MASTER RESET DISABLES OSCIL-

LATOR DURING RESET TO REDUCE POWER

DISSIPATION

(Plastic Package)

(Ceramic Frit Seal Package)

OPERATES WITH VERY SLOW CLOCK RISE

AND FALL TIMES

BUILT-IN LOW-POWER RC OSCILLATOR

EXTERNAL CLOCK (applied to pin 3) CAN BE

USED INSTEAD OF OSCILLATOR

OPERATES AS 2^NFREQUENCY DIVIDER OR

AS A SINGLE-TRANSITION TIMER

Q/Q SELECT PROVIDES OUTPUT LOGIC

LEVEL FLEXIBILITY

(Micro Package)

(Plastic Chip Carrier)

ORDER CODES :

HCC4541 BF

HCF4541 BEY

HCF4541 BM1

HCF4541 BC1

CAPABLE OF DRIVING SIX LOW POWER TTL

LOADS, THREE LOW-POWER SCHOTTKY

LOADS, PR SIX HTL LOADS OVER THE

RATED TEMPERATURE RANGE

PIN CONNECTION (top view)

SYMMETRICAL

TERISTICS

OUTPUT

CHARAC-

100% TESTED FOR QUIESCENT CURRENT

AT 20V

5-10-15V PARAMETRIC RATINGS

MEETS ALLREQUIREMENTS OF JEDECTEN-

TATIVE STANDARD N 13A, ”STANDARD SPE-

CIFICATIONS FOR DESCRIPTION OF ’ B ’

SERIES CMOS DEVICES”

DESCRIPTION

TheHCC/HCF4541B Programmable Timer is com-

posed of a 16-stage binary counter, an oscillator

controlled by2 external resistorsand a capacitor, an

output control logic and an automatic power-on

reset circuit. The counter varies on positive-edge

clock transation and it can be cleared by the MAS-

TER RESET input. The output from this timer is the

Q or Q output from the 8th, 13th, or 16th counter

stage. The choice of the stagedepends on the time-

select inputs A or B (see frequency selection table).

The output is available in one of the two modes that

can be selected via the MODE input, pin 10 (see

truth table). The output turns out as a continuous

squarewave, with a frequency equal to theoscillator

frequency divided by 2^N. When this MODE input is

November 1996

1/11

12 3 4 5 6 7...11

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