Tektronix 50M30 Digital I/O Card

Orig CostLow BidHigh Bidaverage
$400 (1982-new)
$480 (1985)
...
$20.50 3/13/03 #2514036772 wtsps (untested) (2 bids $10 start)

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    This is used in a MI 5010 programmable multifunction interface.
    The 50M30 Digital Input/Output card provides 16 digital input and 16 digital output lines. The inputs accept data from switches, contact closures, and digital devices capable of supplying TTL output levels. The digital outputs provide TTL levels to control instruments, relays, indicators, etc.. The digital outputs can be configured for open-collector outputs by positioning internal jumpers. TTL compatible handshake lines at the front-panel connector allow synchronization data-transfers.
    Data Outputs:
    16 open-collector TTL (type 7406) with 2 kohm pull ups to internal +5 V or user supplied supply (15 V max). Logical 0 sink current up to 40mA for output of <0.7 V.

    Data Input Buffers:
    16 LSTTL Schmitt triggers
    (type 74LS14).
  • 16 Input and 16 Output Lines