MERCURY
Since 1973
V C T C X O – Ultra Low Current
“VM57K” SERIES 5x7 mm
Logic: HCMOS
Wave Form: Square Wave
(1)Inclusive of 25°C tolerance, operating temperature range, ±10% input voltage variation, load change, aging,
shock and vibration.
Part Number Format and Example
"= Please specify
Example: VM57K3-20.000-2.5/-30+75
Explanation: Ultra low current VCTCXO 20.000 MHz; +3.0 V supply voltage; ±2.5 ppm over -30°C to +75°C frequency
stability.
"
3
o
"
20.000
p
"
2.5
q
"
-30+75
r
—
—
⁄
VM57K
n
n: Product series; o: Voltage codes: “28” for +2.8 V; ”3” for +3.0 V; “33” for +3.3 V p: Frequency in
MHz; q: Frequency stability in ppm; r Operating temperature range in °C
VM57K Package Dimensions and Recommended Pad Layout:
unit mm[inches]
[0.275±0.006]
7.00±0.15
[0.024]
0.6
[0.055]
1.4
4
3
2
VM57K_
M E C
3
2
4
1
1
5.08 [0.200]
typical
bottom view
2.2[0.086]
Pad 1
Voltage Control
Ground
Pad 2
Pad 3
Pad 4
Output
Supply voltage
5.08 [0.200]
Chamfered pad is pad No. 1. Count counter-clockwise when looking at top view.
Count clockwise when looking at bottom view.
o.o1uF Decoupling capacitor built-in
MERCURY
Page 2 of 3
Date: Feb. 6, 2002
Rev. 1
MERCURY [ MERCURY UNITED ELECTRONICS INC ]
