Digital IO for AcroPack Modules

These Acromag Digital IO modules interface TTL, on/off, hi/lo logic levels to an embedded computer system. There are several different models available.

AP400 Series

AcroPack Digital IO Modules

Model	AP408 High Voltage Digital Input/Output Modules	AP418 High Voltage Digital Input/Output Modules	AP441 Isolated Digital Inputs with Interrupts Module
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Description	• 32 Digital I/O Channels • High impedance • PCIe Bus Interface The AP408 monitors or controls the on/off (high/low) status of up to 32 devices. Each channel can be used as an input or output. All 32 input channels can be configured with interrupts for a change of state or level detection of any bit. The TTL input threshold includes hysteresis for increasing noise immunity.	• 16 Digital I/O Channels • High Impedance • PCIe Bus Interface The AP418 monitors or controls the on/off (high/low) status of up to 16 devices. Each channel can be used as an input or output. All 16 input channels can be configured with interrupts for a change of state or level detection of any bit. The TTL input threshold includes hysteresis for increased noise immunity. In order to ensure safe, reliable control under all conditions, output operation is “fail-safe.” That is, the outputs are always off upon power-up and are automatically cleared following a software reset. Loopback monitoring of critical control signals is easy since the input and output circuitry are connected in tandem to each channel.	• 32 isolated digital input channels • Extended temperature: -40 to 85°C • PCIe bus interface The AP441 modules provide 32 optically isolated inputs to safely monitor a wide range of digital input voltage levels. Isolation protects your computer system from noise, transient signals, and field wiring faults. The inputs are grouped into four 8-channel ports. Ports are isolated from the logic and each other. Change-of-state interrupts are supported using paired channels. Debounce eliminates spurious interrupts from noise and switching transients for error-free edge detection. Closed-loop monitoring of critical control signals is easily accomplished using the AP441-XE-LF in conjunction with Acromag’s AP445E-LF digital output module.
Model	AP445 Isolated Digital Output Module	AP471 TTL Level Digital I/O
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Description	• 32 bipolar solid-state relays • 0 to ±60V DC or AC voltage input • Extended temperature • PCIe Bus Interface AP445 modules provide 32 isolated solid-state relay outputs to safely control discrete devices. A major AP445 advantage is its flexibility. The module supports wide range bipolar (AC or DC) voltage switching. Each port can be configured for high or low-side switches. The outputs are TTL-compatible when configured as low-side switches and populating on board pull up resistors or using external pull-ups. Isolation protects your computer system from noise, transient signals, and field wiring faults. Outputs are grouped into four 8-channel ports. Ports are isolated via solid-state relays from the logic and from each other. Readback buffers simplify output status monitoring. And for easy closed-loop monitoring of critical control signals, use the AP445 with an AP440 input module.	• TTL-compatible inputs • 48 bidirectional input/output channels • 0 to 5V DC • Wide Temperature Range • PCIe Bus Interface The AP471 AcroPack I/O (AP) modules provide 48 general-purpose, bidirectional I/O points to economically monitor and control a large quantity of digital devices. Each channel has interrupt capability for detecting low-to-high or high-to-low transitions. Change- of-state interrupts are supported using paired channels. Debounce eliminates interrupts from noise and switching transients for error-free edge detection.