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D2E-5 Diagram
Differential ECL Ouput Module
Notice: End-of-Life has been announced for this product. Please see End-of-Life for details.

The ICE-D2E module is a LVTTL-to-differential ECL converter for use on an ICE-PIC card with a 16-bit digital I/O site. It converts the module site LVTTL levels to F100K differential ECL logical levels (compatible with standard Midas switch connections).

The output connector is a 40-pin ribbon cable with data bit 0 on pins 1 and 40, bit 1 on pins 2 and 39, etc., bit 15 on pins 16 and 25, and clock on pins 20 and 21.

Series 2 Cards

An external clock can be connected via SMB connector on the card edge and is jumpered to be DC-coupled LVTTL levels or an AC-coupled 1Vpp sine wave. The clock also has a jumper that applies a 50 ohm termination to ground.

An internal clock is also available via software control: it is the onboard crystal 40MHz divided by an integer from 1 to 65535.

  • H3: Closed for 50 ohm termination
  • H4: Closed for DC-coupled clock input (0-5V)
  • Open for AC-coupled clock input (1Vpp)

In standard configurations, the 40-pin connector will be cabled through the card edge connector to an 40-pin male IDC connector roughly 3-4 inches from outside of the chassis.

Series 3 Cards

There are three clock sources, all located on the motherboard, and are selectable via software control: the default clock is an external source connected to the motherboard SMB connector, usually a 1Vpp sine wave; the internal clock (INTCLK) is the onboard 40MHz crystal divided by an integer from 1 to 65535; the alternate clock (ALTCLK) is the socketed crystal X2 on the motherboard.


EOL has been declared for this model: see End-of-Life for details. Please call for pricing and availability.