NTE1531 查看數據表（PDF） - NTE Electronics
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NTE1531 Datasheet PDF : 3 Pages
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Operational Characteristics (Cont’d): (TA = +25°C, unless otherwise specified)
Parameter
Symbol
Conditions
Min Typ
VDD Voltage
Radio Back–Up
Signal Voltage
VDD(5)
VBUC
VCLK = +B2 = 16V, IDD = 18mA, Iref Vref–0.3 –
= 10mA, Vref = 8V,
TA = –20° to +70°C, +B1 opened.
+B1 = +B2 = 9.15 to 16V, Vref = 8V 0.78VDD –
Clock Back–Up
Signal Voltage
VINHI +B1 = +B2 = 9.15 to 16V, Vref = 8V 0.78VDD –
Radio Back–Up Signal VTH BUC UP +B1 = +B2, Vref = 8V, Iref = 10mA
8.9
–
Rise Voltage
Radio Back–Up Signal VTH BUC DN +B1 = +B2, Vref = 8V, Iref = 10mA
50
–
Hysteresis
BUC Delay Time
at +B Step Input
tD
+B1 = +B2 = 13.2V,
C = 22µF, R = 22k ohm
85
–
Current Dissipation
Vref Thermal Drift
ICC(1)
+B1 = +B2 = 13.2V,
IDD = 30mA, Iref = 10mA
–
70
ICC(2) +B2 = 13.2V, no load, +B1 opened.
–
0.63
|∆Vref|
TA = –10 to +60°C,
Vref = 8V (25°C)
–60
0
Max
10
VDD
VDD
9.3
200
400
–
1.4
60
Unit
V
V
V
V
mV
ms
mA
mA
mV
Logic Table:
B1 B2 CLK VDD Vref BUC
L
H
L
5V 0V
L
INHI
L
Condition
When back–up of time
H
H
L
9V 8V
H
H radio on
L
H
H
9V 8V
L
H read out time when radio off
H
H
H
9V 8V
H
H read out time when radio on
NOTE: This device is for REPLACEMENT ONLY! No application notes are available.
N.C.
14
Vref
13
Vref
Generator
VDD
12
VDD
Generator
Block Diagram
INHI
9
VDD Generator
for Back–Up
Time
Counter IC
Control Signal
Generator
BUC
8
Control LSI
Control Signal
Generator
Reference
Voltage
Generator
1
4
C2 V1
Comparator
2
3
Det C3
Delay
Comparator
10
C1
5
GND
11
B2
Logic
Circuit
6
7
CLK B1
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