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LS7210 Datasheet(PDF) 3 Page - LSI Computer Systems

Part # LS7210
Description  PROGRAMMABLE DIGITAL DELAY TIMER
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Manufacturer  LSI [LSI Computer Systems]
Direct Link  http://www.lsicsi.com
Logo LSI - LSI Computer Systems

LS7210 Datasheet(HTML) 3 Page - LSI Computer Systems

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(E)
(B)
(A)
(D)
(C)
FIGURE 3. MODE DEFINITION TIMING DIAGRAM
A - Turn-off delay in Dual Delay and Delayed Release mode.
B - Turn-on delay in Dual Delay and Delayed Operate mode; one-shot period in One-Shot mode.
C - Output remains on in Delayed Release and Dual Delay modes due to negative trigger
transition before the turn-off delay is over.
D - Output remains off in Delayed Operate mode due to positive trigger transition before
the turn-on delay is over.
E - One-Shot period extended by re-triggering.
Note:
is the programmed delay.
TRIGGER
OUT (Dual Delay)
OUT (Delayed Release)
OUT (Delayed Operate)
OUT (One-Shot)
C
R
+V
5
7
14
+V
V SS
V DD
FIGURE 2.
LS7210 OSCILLATOR CONNECTION
OSC
7210-020298-3
ONE-SHOT
MODE
DELAYED RELEASE MODE
PROGRAMMED
TURN-OFF
DELAY
TRIGGER
TIME-BASE CLK
A
B
OUT
FIGURE 4. LS7210 TIMING DIAGRAM
tL
tH
ts
tnd
tod
tsd
tod
Note 1. - A,B and Trigger inputs are clocked into the input latches with the negative edge of the time-base clock.
Note 2. - In all modes except One-Shot, the output changes with the positive transition of the time-base clock.
In One-Shot mode the output is turned on with the negative transition and turned off with the
positive transition of the time-base clock.
The information included herein is believed to be
accurate and reliable. However, LSI Computer Systems,
Inc. assumes no responsibilities for inaccuracies, nor for
any infringements of patent rights of others which may
result from its use.


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