NI-9403

The NI-9403 is a C Series digital I/O module with 32 bidirectional 5 V TTL channels and 7 µs digital update timing. It provides sinking inputs, sourcing outputs and a D-SUB front connection.

ManufacturerNI (National Instruments)

ModelNI-9403

Part Number779787-01 · 780179-01

Product Type5 V/TTL, 32 Bidirectional Channels, 7 µs C Series Digital Module

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Supported Hardware PlatformC Series

Bidirectional Digital Channels32

Current Flow DirectionSinking Input, Sourcing Output

Digital I/O Logic Levels5 V TTL

Digital I/O Isolation60 VDC Ch-Earth Ground Isolation

Front Connection TypeD-SUB

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Overview

Product overview

Key product information and technical features.

The NI-9403 provides configurable digital input or output with shift-on-the-fly capabilities. Its 32 bidirectional channels use single-ended 5 V TTL signaling, with sinking inputs and sourcing outputs.

This enclosed C Series module uses a D-SUB front connection and provides 60 VDC channel-to-earth ground isolation. Its specified operating temperature range is -40 °C to 70 °C. Listed NI part numbers are 779787-01 and 780179-01.

32 bidirectional digital channels, with no dedicated input-only or output-only channels.
5 V TTL logic levels with single-ended signaling, sinking inputs and sourcing outputs.
7 µs digital update timing and a maximum clock rate of 142 kHz.
60 VDC channel-to-earth ground isolation.
Enclosed C Series construction with a D-SUB front connection.

Verified specifications

Technical data

Verified product specifications.

Supported Hardware Platform	C Series
Number of Bidirectional Digital Channels	32
Current Flow Direction	Sinking Input, Sourcing Output
Enclosed	Yes
Digital I/O Logic Levels	5 V TTL
Digital I/O Isolation	60 VDC Ch-Earth Ground Isolation
Front Connection Type	D-SUB
Maximum Digital Update Rate	7 µs
Operating Temperature Range	-40 °C to 70 °C
Bus Connection	C Series
Maximum Clock Rate	142 kHz
Signaling Type	Single-Ended
NI part numbers	779787-01, 780179-01