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參數(shù)資料
| 型號(hào)： | IW4541B |
| 廠商： | INTEGRAL JOINT STOCK COMPANY |
| 英文描述： | Programmable Timer High-Performance Silicon-Gate CMOS |
| 中文描述： | 可編程定時(shí)器高性能硅柵CMOS |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大?。?/td> | 136K |
| 代理商： | IW4541B |
TECHNICAL DATA
173
Programmable Timer
High-Performance Silicon-Gate CMOS
The IW4541 programmable timer consists of a 16-stage binary
counter, an oscillator that is controlled by external R-C components (2
resistors and a capacitor), an automatic power-on reset circuit, and
output control logic. The counter increments on positive-edge clock
transitons and can also be reset via the MASTER RESET input.
The output from this timer is the Q or not Q output from the 8th,
10th, 13th, or 16th counter stage. The desired stage is chosen using
time-select inputs A and B. The output is available in either of two
modes selectable via the MODE input, pin 10. When this MODE input
is a logic “1”,the output will be a continuous square wave having a
frequency equal to the oscillator frequency divided by 2
N
. With the
MODE input set to logic ”0” and after a MASTER RESET is initiated,
the output (assuming Q output has been selected) changes from a low
to a high state after 2
N-1
counts and remains in that state until another
MASTER RESET pulse is applied or the MODE input is set to a logic
“1”.
Timing is initialized by setting the AUTO RESET input (pin 5) to logic “0”and turning power on. If pin 5 is
set to logic “1”, the AUTO RESET circuit is disabled and counting will not start untill after a positive MASTER
RESET pulse is applied and returns to a low level. The AUTO RESET consumes an appreciable amount of
power and should not be used if low-power operation is desired. For reliable automatic power-on reset, V
CC
should be greater than 5V.
Operating Voltage Range: 3.0 to 18 V
Maximum input current of 1
μ
A at 18 V over full package-temperature range; 100 nA at 18 V and 25
°
C
Noise margin (over full package temperature range):
1.0 V min @ 5.0 V supply
2.0 V min @ 10.0 V supply
2.5 V min @ 15.0 V supply
IW4541B
ORDERING INFORMATION
IW4541BN Plastic
IW4541BD SOIC
T
A
= -55
°
to 125
°
C for all packages
LOGIC DIAGRAM
PIN 14 =V
CC
PIN 7 = GND
PINS 4,11 = NO CONNECTION
PIN ASSIGNMENT
NC = NO CONNECTION
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| IW4541BD | Programmable Timer High-Performance Silicon-Gate CMOS |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IW4541BD | 制造商:IKSEMICON 制造商全稱:IK Semicon Co., Ltd 功能描述:Programmable Timer High-Performance Silicon-Gate CMOS |
| IW4541BN | 制造商:INTEGRAL 制造商全稱:INTEGRAL 功能描述:Programmable Timer High-Performance Silicon-Gate CMOS |
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