Datasheet

LTC1235
14
1235fa
Capacitor Backup with 74HC4016 Switch
TYPICAL APPLICATIONS
R1
10k
R2
30k
0.1μF
0.1μF
+
14121110
1
7
100μF
13
2
+5V
V
CC
V
OUT
V
BATT
74HC4016
1235 TA3
LOW LINE
GND
LTC1235
Write Protect for Additional RAMs
10μF
V
BATT
V
CC
LTC1235
V
OUT
GND
LTC1235 TA4
V
CC
LOW LINE
CE IN
CE OUT
0.1μF
CS
20ns
PROPAGATION
DELAY
62512
RAM
A
+5V
+3V
0.1μF
+
V
CC
62128
RAM
C
V
CC
CS
2
62128
RAM
B
CS
A
CS
B
CS
C
CS
1
CS
1
OPTIONAL CONNECTION FOR
ADDITIONAL RAMs
CS
2
0.1μF
0.1μF
μP
SYSTEM
BACKUP