LS7213 Ver la hoja de datos (PDF) - LSI Corporation
Número de pieza
componentes Descripción
Lista de partido
LS7213 Datasheet PDF : 4 Pages
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D3 1
D2 2
LATCH
LATCH
RANGE
DECODER
D1 3
LATCH
RC 10
OSC
TIMER
OUTPUT
DRIVER
13 O U T 1
OUTPUT
DRIVER
12 O U T 2
POR
GENERATOR
A5
LATCH
OSC
9 CAP
B6
FLASHEN 4
LATCH
LATCH
CONTROL LOGIC
11 R E S E T
TRIGGER 8
LATCH
FIGURE 2. LS7213 BLOCK DIAGRAM
+V 14 VDD
-V
7
Vss
TRIG
RESET
OUT1(OST)
F
C
FIGURE 3.
MODE ILLUSTRATION
WITH TRIG, OUT1 AND RESET
OUT1(OND)
OUT1(OFD)
D
OUT1(DLD)
A
B
E
G
H
A. Turn-on delay in OND and DLD modes; Pulse-width in OST mode.
B. Turn-off delay in OFD and DLD modes.
C. Pulse-width extended by re-trigger in OST mode. No effect in
OND and DLD modes because TRIG switches back low before
turn-on delay has timed out.
D. Turn-off delay in OFD mode.
E. Turn-on delay in OND and DLD modes; pulse-width in OST mode.
F. No effect in OND, OFD and DLD modes because of Trig’s
switching back to opposite levels.
G. Time-out aborted and OUT1 forced high by RESET.
H. After the removal of RESET, OUT1 switches to the inverse polarity
of TRIG immediately (OFD) or after the timeout (OND, DLD).
No effect in OST.
+5V
1 D3
V DD (+V) 14
2 D2
13
OUT1
3 D1
12
OUT2
11
4
RESET
FLASHEN
5
A
6
B
LS7213
10
RC
9
CAP
7
8
Vss(-V)
C1
R2
R1
300
LED
C2
TRIGGER INPUT
RESET INPUT
FIGURE 4. TYPICAL APPLICATION WITH OUT1 AS RELAY
DRIVE AND OUT2 AS FLASHER
The table below shows the delays obtained with the
following components R1 = 56kΩ, R2 = 500kΩ and
C2 = 0.002µF. At any scale factor, the delay changes
from minimum to maximum as the potentiometer, R2
is varied from minimum to maximum.
D3 D2 D1
000
001
010
011
100
101
110
111
TIMING RANGE
0.1 sec - 1 sec.
1 sec. - 10 sec.
10 sec - 100 sec.
0.1 min. to 1 min.
1 min. - 10 min
10 min. - 100 min.
0.1 hr. - 1 hr.
1 hr. - 10 hr.
C1 = 0.22µF, produces flash pulses of 0.1 sec
duration at Out2
7213-090100-4
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