RC001 Datasheet, PDF (1/2 Pages) Nel Frequency Controls,inc – Redundant Clock Module Positive ECL Compatible Differential Output

RC001
• Clock Redundancy
• Zero Downtime
• HALT/HASS Verified
• Up to 250.000 MHz
RC001 Redundant Clock Module
Positive ECL Compatible Differential Output
U.S. Patent 6,970,045 0314C Rev F
Description
The Redundant Clock Module is intended to supply highly reliable fixed clock reference.
This clock output is based on two clock references internal that are monitored and eliminated
from use if they are not operating within tolerance. A slow transition between oscillator references
during switching is controlled to assure no significant phase shift or runt pulses will affect the
end user application. Osc. 0 Enable or Osc. 1 Enable is used to disable respective oscillator to
verify switching functionality. The oscillator status outputs indicate if the respective oscillator is
functioning properly or not.
Features
• HALT/HASS verified
• Frequency range: 20.000MHz to
250.000MHz
• User specified tolerance from ±100ppm
• Cover at electrical ground
• Will withstand SMD reflow temperatures
of 253°C for 4 minutes maximum
• MECL compatible outputs
• High shock resistance, to 1000g
• Leaded package
• Ten low skew DPECL outputs
Electrical Connection
Pin
Connection
Pin
Connection
Pin
1
Q6
17
Vcc
33
2
/Q6
18
Vcc
34
3
Vcc
19
GND
35
4
Q7
20
GND
36
5
/Q7
21
Vcc
37
6
GND
22
Vcc
38
7
Q8
23
GND
39
8
/Q8
24
GND
40
9
Vcc
25
/Osc 0 status
41
10
Q9
26
Osc 0 status
42
11
/Q9
27
/Osc 1 status
43
12
GND
28
Osc 1 status
44
13
EN1
29
Osc select
45
14
EN0
30
/Reset
46
15
GND
31
Vcc
47
16
GND
32
Q0
48
Note: Osc X status is logic low for pass and logic high for fail
Drawing Specifications
Connection
/Q0
GND
Q1
/Q1
Q2
/Q2
Vcc
Q3
/Q3
Vcc
GND
Q4
/Q4
GND
GND Q5
GND /Q5
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