NJU6379
Product Specification
1.8V Operation 3rd. Over Tone Quartz Crystal Oscillator
sGENERAL
DESCRIPTION
The NJU6379 series is a C-MOS IC for 3rd. over tone
quartz crystal oscillator that consists of an oscillation amplifier
and 3-state output buffer, and can oscillate at 1.8V very low
voltage.
The NJU6379 has ability to oscillate from 60 to 70MHz.
The oscillation amplifier is realized very low stand-by current
using NAND circuit.
The 3-state output buffer is C-MOS compatible.
s
PACKAGE OUTLINE
NJU6379C-D
sFEATURES
qOperating
Voltage
1.8 to 2.8V
qMaximum
Oscillation Frequency
(See Line-up Table)
qLow
Operating Current
qHigh
Fan-out
I
OH
/I
OL
= 4mA @2.5V
qOscillation
Stop and Output Stand-by Function
q3-State
Output Buffer
qOscillation
Capacitors Cg and Cg on-chip
qPackage
Outline
Thin-Chip
qC-MOS
Technology
sLINE-UP
TABLE
Type No.
NJU6379
Recommended
Oscillation
Frequency Range
60 to 70 MHz
Output
Frequency
f
0
Cg/Cd
8.5/9pF
s
PAD LOCATION
Thin-Chip
CONT
XT
XT
V
SS
V
DD
F
OUT
s
COORDINATES
No
1
Pad Name
X
Y
CONT
XT
XT
-178
-178
-178
-178
206
206
231
77
-77
-231
-231
231
2
3
4
5
8
V
SS
F
OUT
V
DD
Starting Point:Chip Center
Unit[um]
Chip Size:0.7x0.75mm
Thin-Chip Thickness:200±20um
Pad Size:90x90um
sBLOCK
DIAGRAM
XT
Rf
V
SS
V
DD
XT
Cg
Cd
3
−
STATE
BUFFER
F
OUT
CONT
2002/04/10 ( 1 / 4 )
NJU6379
s
TREMINAL DESCRIPTION
SYMBOL
CONT
FUNCTION
Oscillation and 3-state Output Buffer Control
F
OUT
CONT
H or OPEN Output Frequency f
0
L
Oscillation Stop and High impedance Output
Quartz Crystal Connecting Terminals
XT
V
SS
V
SS
=0V
F
OUT
Frequency Output
V
DD
V
DD
=2.5V
Note1) Refer to the line-up table.
s
ABSOLUTE MAXIMUM RATINGS
XT
(Ta=25
°
C)
PARAMETER
SYMBOL
RATING
UNIT
Supply Voltage
V
DD
-0.5 to +7.0
V
Input Voltage
V
IN
V
SS
-0.5 to V
DD
+0.5
V
Output Voltage
V
O
-0.5 to V
DD
+0.5
V
mA
Input Current
I
IN
±
10
mA
Output Current
I
O
±
25
Operating Temperature Range
Topr
-40 to +85
°
C
Storage Temperature Range
Tstg
-55 to +125
°
C
Note2) If the supply voltage(V
DD
) is less than 7.0V, the input voltage must not over the V
DD
level though 7.0V is
limit specified.
Note3) Decupling capacitor should be connected between V
DD
and V
SS
due to the stabilized operation for the
circuit.
2002/04/10 ( 2 / 4 )
NJU6379
s
ELECTRICAL CHARACTERISTICS
PARAMETER
Operating Voltage
SYMBOL
V
DD
CONDITIONS
MIN
1.8
TYP
(Ta=25
°
C)
MAX
UNIT
2.8
V
PARAMETER
Operating Current
Oscillation Stopping
Current
Stand-by Current
Input Voltage
Output Current
Input Current
3-state Off Leakage
Current
Feedback Resistance
Internal Capacitor
Maximum Oscillation
Frequency
Output Signal
Symmetry
Output Signal Rise
Time
Output Signal Fall
Time
Output Disable time
Output Enable Time
Note4)
SYMBOL
I
DD
I
STB
Ist
V
IH
V
IL
I
OH
I
OL
I
IN
I
OZ
Rf
Cg/Cd
F
MAX
SYM
tr
tf
T
PLZ
T
PZL
CONDITIONS
fosc=70MHz,C
L
=15pF
CONT =V
SS
, No load
CONT =XT=V
SS
, No load
Note4)
MIN
(V
DD
=2.5V,Ta=25
°
C)
TYP
MAX
UNIT
8
2
5
1
2.5
0.5
uA
uA
V
V
mA
mA
uA
uA
uA
K
Ω
pF
MHz
50
3
3
55
6
6
200
200
%
ns
ns
ns
ns
V
OH
=2.25V
V
OL
=0.25V
CONT =0.8V
DD
CONT =0.2V
DD
CONT =V
SS
, F
OUT
= V
DD
or V
SS
XT=V
DD
f
OSC
=70MHz
2
0
4
4
7.5
1.2
12.0
2.0
±
0.1
4.2
8.5/9
70
C
L
=15pF, @V
DD
/2
C
L
=15pF,10%~90%
C
L
=15pF,90%~10%
C
L
=15pF,R
UP
=10k
Ω
C
L
=15pF,R
UP
=10k
Ω
45
Excluding input current on CONT Terminal.
2002/04/10 ( 3 / 4 )
NJU6379
s
MEASURMENT CIRCUITS
(1)Output Signal Symmetry(C
L
=15pF)
1000pF
Pulse
Generator
50Ω
XT
V
DD
F
OUT
C
L
=15pF
V
SS
1/2V
DD
H
L
(2)Output Signal Rise/Fall Time(C
L
=15pF)
1000pF
Pulse
Generator
50Ω
XT
V
DD
F
OUT
C
L
=15pF
V
SS
tr
tf
90%
50%
10%
(3)Output Disable/Enable Time(C
L
=15pF,R
UP
=10k
Ω
)
XT
V
DD
F
OUT
Pulse
Generator
50Ω
CONT
V
SS
C
L
=15pF
F
OUT
V
OL
R
UP
=10kΩ
CONT
0.2V
DD
T
PLZ
V
OH
0.8V
DD
T
PZL
[CAUTION]
The specifications on this data book are only
given for information , without any guarantee
as regards either mistakes or omissions.
The application circuits in this data book are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
2002/04/10 ( 4 / 4 )
stm32/stm8
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