Modular Systems > National Instruments > Serial Interface Devices

779553-01 Request for Availability

779553-01, 250 kHz, USB 2.0 Full-Speed, USB-8451 I²C/SPI Interface Device

Rated 4.6/5 | 18 ratings

NI 779553-01 I²C/SPI Interface Device | Apex Waves | Image
NI 779553-01 I²C/SPI Interface Device | Apex Waves | Image
779553-01 New
779553-01 Refurbished
❮ ❯

Actual item may vary if no part number is provided on quote request.

NI 779553-01 I²C/SPI Interface Device | Apex Waves | Image
NI 779553-01 I²C/SPI Interface Device | Apex Waves | Image
779553-01 New
779553-01 Refurbished

✔ 2 Year Warranty Included

✔ Free Ground Shipping

✔ NIST Calibration Available

Please fill out the form below to send in your quote request and a representative will contact you with a formal quote. View blog post on Model Name vs. Part Numbers

+Add more parts

Avg. Response Time: 15 min

Prefer to send a text message?

Text your name, e-mail, and parts to quote to:   1-919-809-5227

National Instruments 779553-01 I²C/SPI Interface Device

The 779553-01 from National Instruments is a master interface that is part of the USB-8451 model family. It is made to work seamlessly with devices that are serial peripheral interface (SPI), System Management Bus (SMBus), and inter-integrated circuit (I²C) compatible. This portable solution makes it easier to interface with integrated circuits and consumer devices thanks to its plug-and-play USB connectivity.

With its ability to operate at up to 12 MHz for SPI and 250 kHz for I²C, the 779553-01 enables effective data transfer in a range of applications. It features eight general-purpose digital I/O lines that can be used for LED toggling or setting I²C device addresses, among other things. Because of these capabilities, it's a great option for engineers who want to place the interface closer to the I²C/SPI devices than PCI interfaces in order to limit the length of the I²C bus and minimize noise issues.

The 779553-01 OEM is a full-speed USB 2.0 device, providing robust connectivity options for both I²C and SPI protocols. It provides a great deal of flexibility for a range of control and monitoring activities because of its eight SPI chip selections and eight general-purpose digital I/O channels. Precise control over digital signals is possible because each of the eight single-ended digital lines (P0.<0..7>) can be independently configured as either static digital input (DI) or digital output (DO) lines. The DIO port can be made to function at 5 V by adding an external pull-up resistor to its default configuration, which allows it to function in a push-pull mode at 3.3 V.

Along with an input for MISO (SDI), the 779553-01's SPI interface comprises outputs for SPI chip select (CS <0..7>), MOSI (SDO), and clock (SCLK). An absolute voltage range of -0.5V to +5.8V with respect to ground is supported by the push-pull mode-driven SPI signals. A broad variety of SPI devices can be used with this interface because it supports an 8-bit transmission size.

Standard mode clock rates (32kHz to 100kHz) and fast mode clock rates (125kHz to 250kHz) are supported via the 779553-01's I²C interface, which has both SDA and SCL lines. It is incompatible with High-Speed Mode and Fast Mode Plus. Reliability and the avoidance of harm to connected devices are guaranteed by the open-drain driver type and power-on high impedance state.

Part Number779553-01
Model NameUSB-8451
Part TypeI²C/SPI Interface Device
Maximum I²C Clock Rate250 kHz
Maximum SPI Clock Rate12 MHz
USB StandardUSB 2.0 Full-Speed
Digital I/O Lines8 (P0.<0..7>)
SPI Chip Selects8
I²C Modes SupportedStandard (32-100 kHz), Fast (125-250 kHz)
Power Supply Output+5 V and GND

Associated part numbers for 779553-01:

Delivery:

UPS, FedEX and DHL – Free Ground on all orders

Overnight, Next Day Air or Expedited shipping options available

International delivery available

Same day shipping for in-stock on location

Warranty:

All of our products are covered by our Apex Waves Warranty.

✓ 3 Year Warranty - New Surplus Parts

✓ 2 Year Warranty - Refurb / Fully Tested Parts

Returns:

No hassle return policy.

Dedicated customer service team.

Payment:

Authorize.net Visa Master Card American Express Truist icon logo Better Business Bureau Dun & Bradstreet

Quick Quotes:

Receive Price & Availability Today!

Calibration:

Ask About Our Tiered Calibration Levels

Option & Modules:

Confirm Your Requirements or Versions

Repair:

Cost & Lead Time Available Upon Request for Service

Repair Evaluation: $150

Share this page:

Common Typos:

U79553-01, I79553-01, 779T53-01, 77955E-01, 779553-0Q
Why Buy From Apex Waves:
Video thumbnail for Apex Waves Unboxing Experience Video