參數(shù)資料
型號: HCF4541BEY
廠商: 意法半導體
元件分類: 定時器
英文描述: Octal Bus Transceivers With 3-State Outputs 20-CFP -55 to 125
中文描述: 可編程定時器
文件頁數(shù): 1/11頁
文件大?。?/td> 247K
代理商: HCF4541BEY
HCC4541B
HCF4541B
November1996
PROGRAMMABLE TIMER
EY
(Plastic Package)
16 STAGE BINARI COUNTER
LOWSYMMETRICAL OUTPUT RESISTANCE,
TYPICALLY 100 OHM ATV
DD
= 15V
OSCILLATOR FREQUENCY RANGE : DC TO
100kHz
AUTO OR MASTER RESET DISABLES OSCIL-
LATORDURINGRESET TOREDUCE POWER
DISSIPATION
OPERATES WITH VERY SLOW CLOCK RISE
AND FALL TIMES
BUILT-INLOW-POWER RC OSCILLATOR
EXTERNAL CLOCK (applied to pin 3) CAN BE
USED INSTEAD OFOSCILLATOR
OPERATESAS 2
N
FREQUENCY DIVIDER OR
AS ASINGLE-TRANSITION TIMER
Q/Q SELECT PROVIDES OUTPUT LOGIC
LEVELFLEXIBILITY
CAPABLE OF DRIVING SIXLOW POWER TTL
LOADS, THREE LOW-POWER SCHOTTKY
LOADS, PR SIX HTL LOADS OVER THE
RATED TEMPERATURE RANGE
SYMMETRICAL
OUTPUT
TERISTICS
100% TESTED FOR QUIESCENT CURRENT
AT 20V
5-10-15V PARAMETRIC RATINGS
MEETSALLREQUIREMENTSOFJEDECTEN-
TATIVESTANDARD N 13A, ”STANDARD SPE-
CIFICATIONS FOR DESCRIPTION OF ’ B ’
SERIESCMOS DEVICES”
CHARAC-
ORDER CODES :
HCC4541 BF
HCF4541 BEY
HCF4541 BM1
HCF4541 BC1
F
(Ceramic FritSeal Package)
M1
(Micro Package)
C1
(Plastic Chip Carrier)
DESCRIPTION
The
HCC/HCF4541B
Programmable Timeriscom-
posed of a 16-stage binary counter, an oscillator
controlled by2 external resistorsandacapacitor, 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 ofthe stagedepends onthetime-
selectinputs Aor B(see frequency selection table).
The output is available inone 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,withafrequencyequal totheoscillator
frequency divided by 2
N
. When this MODE input is
PIN CONNECTION
(top view)
1/11
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HCC4543BF BCD-TO-7 SEGMENT LATCH/DECODER/LCD DRIVER
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