Keithley 7020D

The Keithley 7020-D is an 80-bit digital I/O interface card delivering 40 independent inputs and 40 independent outputs for high-density signal monitoring and control in automated test systems. Two heavy-duty 50-pin D-sub connectors via short cables provide solid mechanical connection suitable for production environments with frequent connect/disconnect cycles. Open-collector output drivers with integrated flyback diodes, factory-installed 10kΩ pull-up resistors, and flexible voltage configuration support demanding industrial and ATE applications. ## Technical Specifications Digital I/O Architecture • 40 independent digital inputs with internal 10kΩ pull-up resistors • 40 independent digital outputs configured as open-collector drivers • Input logic levels: 0.8V maximum (low), 2V minimum (high) • Maximum input voltage: 42V peak Output Driver Characteristics • Pull-up voltage: internally supplied at 5.3V; external connection accepts user-supplied voltage to 25V maximum • Internal 10kΩ pull-up resistors; removable for external pull-up devices • Positive Temperature Coefficient (PTC) circuit protector in series with each output • Per-channel maximum sink current: 65mA • Per-bank (8-bit) maximum sink current: 500mA • Per-card maximum sink current: 1A • Output protection resistance: <18Ω • Collector-emitter saturation voltage: <0.75V @ 1mA, <1V @ 65mA Input Specifications • Input logic low current: −600µA maximum @ 0V • Input logic high current: 50µA maximum @ 5V Power Supply • Internal 5.3V supply or external user-supplied voltage option ## Key Features • Two 50-pin D-sub connectors with short cable assemblies for reliable industrial interconnection • Internal flyback diode protection on all output drivers • Jumper-selectable dual pull-up voltage support • Integrated input and output protection • Compact high-density implementation ## Typical Applications • Automated test equipment (ATE) with extensive digital control and monitoring • Production line relay and solenoid control • Industrial process monitoring with parallel signal acquisition • Large-scale digital switching and sequencing ## Compatibility & Integration The 7020-D integrates into test systems requiring high-channel-count digital I/O in a single card slot. D-sub connector configuration optimizes for production environments where mechanical durability and frequent cable handling are operational requirements.