GE VMIVME2120

百瑞彩票This board may be ordered with positive or negative true I/O

百瑞彩票options. The data conversion (inversion) is determined by the

selection of data latches which control the output driver

transistors.

百瑞彩票A positive true output option causes a VMEbus logical one to

turn the corresponding output transistor ON, which supplies the

百瑞彩票user with zero volts.

百瑞彩票The negative true output option causes a VMEbus logical one to

turn the corresponding output transistor OFF, which supplies the

百瑞彩票user with an open circuit for open-collector output circuits or

with a high for electronic switch type output circuits.

Boards manufactured with the negative true TTL option are

百瑞彩票designed such that a VMEbus logical one causes the output

百瑞彩票driver to produce a logic one (high) to the user.

百瑞彩票Conversely, the positive true TTL option is designed such that a

百瑞彩票VMEbus logical one causes the output driver to produce a logic

百瑞彩票zero (low) to the user. 

Output Features: The high current driver (600mA sink) outputs

百瑞彩票are designed to drive incandescent lamps and inductive loads

百瑞彩票without external current limiting or warming resistors. Due to

cold filament inrush currents, it is recommended that only one

百瑞彩票lamp be driven by the output driver. However, if more than one

bulb must be driven by a single wire, then another driver must

百瑞彩票be connected in parallel. If more than one bulb must be driven

百瑞彩票by a single output, it is recommended the VMIVME-2131 (current

百瑞彩票source/sink) or the VMIVME-2130 (current source only) be used if

百瑞彩票the application will allow. The output drivers of the

百瑞彩票VMIVME-2131 and VMIVME-2130 will not necessarily support all

of the VMIVME-2120 current sink (open collector) applications. In

百瑞彩票addition to this, the VMIVME-2120 and VMIVME-213x have

dissimilar power requirements. 

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