RC001 NEL | Alldatasheet

Document overview

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Technical content

Features

 HALT/HASS verifi ed  Frequency range: 20.000MHz to 250.000MHz  User specifi ed tolerance from ±100ppm  Cover at electrical ground  Will withstand SMD refl ow temperatures of 253°C for 4 minutes maximum  MECL compatible outputs  High shock resistance, to 1000g  Leaded package  T en low skew DPECL outputs RC001 Redundant Clock Module Positive ECL Compatible Differential Output U.S. Patent 6,970,045 0314C Rev F For the most up to date specifi cations on each NEL product, log on to our website—www.nelfc.com Electrical Connection Pin Connection Pin Connection Pin Connection

1 Q6 17 Vcc 33 /Q0

3 Vcc 19 GND 35 Q1

4 Q7 20 GND 36 /Q1

6 GND 22 Vcc 38 /Q2

7 Q8 23 GND 39 Vcc

9 Vcc 25 /Osc 0 status 41 /Q3

10 Q9 26 Osc 0 status 42 Vcc

11 /Q9 27 /Osc 1 status 43 GND

12 GND 28 Osc 1 status 44 Q4

13 EN1 29 Osc select 45 /Q4

14 EN0 30 /Reset 46 GND

15 GND 31 Vcc 47 GND Q5

16 GND 32 Q0 48 GND /Q5

Note: Osc X status is logic low for pass and logic high for fail Drawing Specifi cations

Description

The Redundant Clock Module is intended to supply highly reliable fi xed 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 signifi cant 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.

Operating Conditions and Output Characteristics

Electrical Characteristics

Parameter Symbol Conditions Min Typical Ma x Frequency — — 20.000 MHz — 250.000 MHz Duty Cycle — @V CC -1.29 45/55% — 55/45% Logic 0 V OL — V CC -1.95 V — V CC -1.60 V Logic 1 V OH — V CC -1.15 V — V CC -0.90 V Rise & Fall Time tr, tf 20-80% V O — — 600 psec Jitter, RMS — 12 kHz to 20 MHz — — 5 psec Frequency Stability dF/F User Speci fi ed -100 ppm — +100 ppm Output Skew — — — — ±30 psec General Characteristics Parameter Symbol Conditions Min Typical Max Supply Voltage V CC 3.3V±10% 2.97 V 3.3 V 3.63 V Supply Current(1) I CC V CC or Ground Current 0.0 mA — 900 mA Output Current I O Low level Output Current 0.0 mA — ±50.0 mA Operating T emperature T A — -0 oC — 70 oC Storage T emperature T S — -55 oC — 125 oC Footnote: 1) All outputs terminated by 50 ohm to VCC -2V RC001 Redundant Clock Module Positive ECL Compatible Differential Output U.S. Patent 6,970,045 0314C Rev F Test Circuit Output Waveform Test Circuit uses a split supply of +2V and -1.3V for ease of testing. Test Circuit