Crystal Clock Oscillator
2785 Series
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Model name
2785V Frequency stability of ±100 x 10
–6.
Programmable Type
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Application
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For compact mobile information equipment, such as a notebook PC,
mobile information terminal, and PC card
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Features
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PLL technology allows this crystal oscillator to support 1 to 125 MHz.
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With the adoption of frequency-writing technology, even the tightest
delivery deadline can be met.
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Automatic mounting by taping and IR reflow (lead-free) are possible.
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Compact and light with the following dimensions and weight of 5.0 x 3.2 mm,
1.0 mm, and 0.06 g.
Pb
Free
Absolute maximum rating
Power supply voltage (V
DD
) -0.5 to +7.0V DC
Storage temperature range -55 to +125°C
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Specifications
Item
Output level
Frequency range
*1
Operating temperature range
*2
Frequency stability
Power supply voltage
Consumption current During operation
(+5.0V,25℃) max During standby
V
OL
max/V
OH
min
Tr max/Tf max
Duty Cycle min. to max.
Load (C
L
) max
Oscillation start time max
Standby function
Number for specifying an order
Model
2785V
TTL
(MHz)
(℃)
(×10
–6
)
(V)
(mA)
(μA)
(V)
(ns)
(%)
TTL GATE
(ms)
1 ≤ F ≤ 40
40 < F ≤ 70
–20 to +70
±100
+5.0±0.5
70 < F ≤ 125
25
0.4V/2.4V
40
50
I
OL
=8mA
I
OH
=–8mA
2.5/2.5 (0.4V to 2.4V)
40 to 60 (at 1.4V)
5
10
Available (tristate)
NSA5314A
50
*1: If you require a product with a frequency not given above, please contact us.
*2: If you require a product with an operating temperature range not given above, please contact us.
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Dimensions
mm
3.2±0.2
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Output Waveform <TTL>
Tr
2.4V
0.36±0.1
0.25±0.1
1.4V
0.4V
Reference land pattern
1.4
V
OL
t
T
2.2
0V
Tf
V
OH
#1
C0.5
1.0±0.1
1.2±0.1
1.2±0.1
#2
1.0 ±0.2
5.0±0.2
Duty Cycle = t/T×100 [%]
2.54±0.1
1.2
#4
#3
2.54
Cby = 0.01μF
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Standby Function
#1 Input
Level H (+2 V min.)
or OPEN is selected.
Level L (+0.8 V max.) is selected.
PAD
#1
#2
#3
#4
Connection
Standby
GND
OUTPUT
V
DD
#3 Input
Oscillation output ON
High impedance
(weak pull-down)
Example 1: When ordering a product with model name: 2785V, frequency: 80 MHz,
frequency stability: ±100 x 10
–6
, and power supply voltage: 5.0 V
When ordering our products, specify them with an “Ordering Code” that consists of the following:
Ordering Code: 2785V – 80.000000M – NSA5314A
Model name – Frequency (up to 9 digits) M – Number for specifying an order
If you have any queries concerning our standard frequencies and numbers for specifying orders, please contact our sales representatives or visit our homepage (http://www.ndk.com/).
cc27_080304_2785V_100_e1
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How to Specify an Order
NDK [ NIHON DEMPA KOGYO ]
