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参数资料
| 型号： | NTE1537 |
| 厂商： | NTE Electronics, Inc. |
| 英文描述： | Integrated Circuit CMOS, Digital Frequency Indicator w/Clock LED Function |
| 中文描述： | 集成电路，数字频率指示器瓦特的CMOS /时钟LED功能 |
| 文件页数： | 3/4页 |
| 文件大小： | 29K |
| 代理商： | NTE1537 |
Electrical Characteristics (Cont’d):
(T
A
= +25
°
C, V
DD
= 8 to 10.3V, V
SS
= 0V, V
ref
= 7.9 to 9V,
V
ref
≤
V
DD
unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Input Floating Voltage
V
IF3
I
IH4
V
IF4
Rf
1
SET, DEMAND, input floating
0.45V
DD
15
–
0.55V
DD
400
V
μ
A
V
M
Input
“
H
”
Level Current
INHI, V
DD
= 4.3 to 10.3V, V
IN
= V
DD
INHI, V
DD
= 4.3 to 10.3V, input floating
Feedback resistance across OSC
–
IN
and OSC
–
OUT
–
Input Floating Voltage
0
–
0.3
Feedback Resistance
–
3
–
Rf
2
Rf
3
V
OL1
V
OL2
Feedback resistance of Fin
–
FM
–
3
–
M
M
V
Feedback resistance of Fin
–
AM
–
3
–
Output
“
L
”
Level Voltage
PM, V
DD
= 8V, I
OL
= 45mA
Segment outputs other than PM
V
DD
= 8V, I
OL
= 15mA
All segment outputs, V
DD
= 10.3V,
V
OH
= 10.3V
V
DD
= 10.3V, f
opg
= 4MHz (with crystal
mounted), f
IN2
= 2.5MHz (0.7V
P
–
P
)
V
DD
= 5.5V, f
opg
= 4MHz (with crystal
mounted), V
ref
= 0V, INHI = 0
V
DD
= 10.3V, V
ref
= 9V,
AM
–
Fine = FM
–
Fine = V
ref
–
–
0.7
–
–
0.7
V
Output Leakage Current
I
OFF
–
–
10
μ
A
Current Dissipation
I
DD1
–
8
17
mA
I
DD2
–
1.0
2.5
mA
I
ref
–
0.5
1.5
mA
Note 1. + sign: Flowing into LSI
–
sign: Flowing out of LSI
Seg
–
PM Digit 1
Seg
–
c Digit 1
Seg
–
b Digit 1
Seg
–
a Digit 2
Seg
–
f Digit 2
Seg
–
e Digit 2
Seg
–
d Digit 2
Seg
–
c Digit 2
Seg
–
g Digit 2
Seg
–
b Digit 2
Seg
–
a Digit 3
Seg
–
f Digit 3
Seg
–
e Digit 3
Seg
–
d Digit 3
V
SS
Seg
–
c Digit 3
Seg
–
g Digit 3
Seg
–
b Digit 3
Seg
–
a Digit 4
Seg
–
f Digit 4
Seg
–
e Digit 4
INHI
Seg
–
b Digit 4
FIN
–
FM
FIN
–
AM
IF
–
FM
Seg
–
g Digit 4
Seg
–
c Digit 4
Pin Connection Diagram
V
ref
V
DD
IF
–
AM 2
FM
–
Fine
AM
–
Fine
CTL/CLD
FM/AM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
IF
–
AM 1
12/24 H
SET
Demand
OSC Output
OSC Input
Seg
–
d Digit 4
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