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NTE1537 Datasheet(PDF) 3 Page - NTE Electronics

Part No. NTE1537
Description  Integrated Circuit CMOS, Digital Frequency Indicator w/Clock LED Function
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Maker  NTE [NTE Electronics]
Homepage  http://www.nteinc.com
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Electrical Characteristics (Cont’d): (TA = +25°C, VDD = 8 to 10.3V, VSS = 0V, Vref = 7.9 to 9V,
Vref ≤ VDD unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Input Floating Voltage
VIF3
SET, DEMAND, input floating
0.45VDD
0.55VDD
V
Input “H” Level Current
IIH4
INHI, VDD = 4.3 to 10.3V, VIN = VDD
15
400
µA
Input Floating Voltage
VIF4
INHI, VDD = 4.3 to 10.3V, input floating
0
0.3
V
Feedback Resistance
Rf1
Feedback resistance across OSC–IN
and OSC–OUT
3
M
Rf2
Feedback resistance of Fin–FM
3
M
Rf3
Feedback resistance of Fin–AM
3
M
Output “L” Level Voltage
VOL1
PM, VDD = 8V, IOL = 45mA
0.7
V
VOL2
Segment outputs other than PM
VDD = 8V, IOL = 15mA
0.7
V
Output Leakage Current
IOFF
All segment outputs, VDD = 10.3V,
VOH = 10.3V
10
µA
Current Dissipation
IDD1
VDD = 10.3V, fopg = 4MHz (with crystal
mounted), fIN2 = 2.5MHz (0.7VP–P)
8
17
mA
IDD2
VDD = 5.5V, fopg = 4MHz (with crystal
mounted), Vref = 0V, INHI = 0
1.0
2.5
mA
Iref
VDD = 10.3V, Vref = 9V,
AM–Fine = FM–Fine = Vref
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
VSS
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
Seg – g Digit 4
Seg – c Digit 4
Pin Connection Diagram
Vref
VDD
IF – AM 2
FM – Fine
FM/AM
1
2
3
4
5
FIN – FM
6
FIN – AM
7
IF – FM
8
42
41
40
39
38
37
36
35
9
34
10
IF – AM 1
11
33
32
12
31
13
AM – Fine
30
14
CTL/CLD
29
12/24 H
15
SET
28
16
Demand
17
27
26
18
25
19
OSC Output
24
20
OSC Input
23
21
22
Seg – d Digit 4




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