DT335

Low Cost, Digital I/O Boardfor the PCI bus
Overview
Ideal for applications requiring control capabilities, theDT335 includes 32 digital I/O lines.

Key Features• 32 digital I/O lines for non-clocked monitoring or

The DT335 features 32 digital I/O lines and interrupt onchange.

control of high channel-count applications.

• Interrupt on bit change detection for monitoring
critical signals.

Digital I/O Features Summary

Supported Operating Systems

Ports A, B, C

• Windows® 10/8/7/Vista®/XP 32/64-bit
32 Digital I/O Channels for High ChannelCount Requirements
The DT335 provides 32 digital I/O lines, grouped into four
8-bit ports. You can program each port for either input
or output. Digital outputs are capable of driving external
solid-state relays (sink 24 mA and source 15 mA).

8 bidirectional

8 bidirectional

LinesInput Type
High-level Input Voltage
Low-level Input Voltage
Minimum Pulse Width

Level-sensitive
2.0 V minimum
0.8 V maximum—

Level-sensitive
2.0 V minimum
0.8 V maximum
66 ns high andlow*

2.4 V minimum(IOH = -15 mA)
0.5 V maximum(IOL = 12 mA)

2.4 V minimum(IOH = -15 mA)
0.5 V maximum(IOL = 12 mA)

Interrupt on Bit ChangeDetection

NoYes

SSR Drive

Yes

Yes

Outputs
Output Diver High Voltage
Output Drive Low Voltage

The DT335 board can generate an interrupt when anyof the eight digital I/O lines corresponding to one of the
8-bit digital ports changes state. This feature is usefulwhen you want to monitor critical signals or when you
want to signal the host computer to transfer data to orfrom the board. You can enable the interrupts on a bitby-bit basis on this port.

Port DLines per port

*The minimum pulse width applies only to interrupt-on-change
detection. Pulses less than the minimum may not be detected as achange.

DT335 Block Diagram(508) 946-5100

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Easy User Connections

Ordering Summary

All signals are brought out to a dedicated 68-pin connector on thebackplate of the DT335 board.

HARDWARE• DT335

Cross-Series Compatibility

ACCESSORIES• STP68 — Screw terminal panel.

Virtually all Data Translation data acquisition boards are compatible withthe DT-Open Layers Class Library. This means that if your application wasdeveloped with one of Data Translation’s software products, you can easily
upgrade to a new Data Translation board. Little or no reprogramming isneeded.

FREE SOFTWARE
The following software is available as a freedownload from our website:• LV-Link – Access the power of Data
Translation boards through LabVIEW™
• DAQ Adaptor for MATLAB – Access theanalysis and visualization tools of MATLAB®.

Software Options
The following software is available for free and provided on the DataAcquisition Omni CD:• Device Driver –The device driver allows you to use the PCI DAQ board
with any of the supported software packages or utilities.

• DT-Open Layers® for .NET Class Library – Use this class library if you
want to use Visual C#® or Visual Basic® for .NET to develop application
software using Visual Studio® 2003-2012; the class library complies
with the DT-Open Layers standard.
• DataAcq SDK – Use the DataAcq SDK to use Visual Studio 6.0 andMicrosoft® C or C++ to develop application software using Windows
10/8/7/Vista/XP 32/64-bit; the DataAcq SDK complies with theDT‑Open Layers standard.
• DAQ Adaptor for MATLAB – Data Translation’s DAQ Adaptor provides
an interface between the MATLAB® Data Acquisition (DAQ) toolbox
from The MathWorks™ and Data Translation’s DT-Open Layers
architecture.
• LV-Link – Data Translation’s LV-Link is a library of VIs that enable
LabVIEW™ programmers to access the data acquisition features of DTOpen Layers compliant USB and PCI devices.

(508) 946-5100
DT335-Datasheet		2

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June 2017. Rev 3© Measurement Computing Corporation