FT232H datasheet(40/65 Pages) FTDI

Part #	FT232H

Description	FT232H Single Channel Hi-Speed USB to Multipurpose UART/FIFO IC

PDF	65 Pages

Scroll/Zoom	100%

Manufacturer	FTDI [Future Technology Devices International Ltd.]

Direct Link	http://www.ftdichip.com

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40 / 65 page

Document No.: FT_000288

FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC

Datasheet Version 1.81

Clearance No.: FTDI #199

4.9.3 Fast Serial Data Interface Example

Figure 4.20 shows example of two Agilent HCPL-2430 (see the semiconductor section at

www.avagotech.com) Hi-Speed opto-couplers used to optically isolate an external device which

interfaced to USB using the FT232H. In this example VCC5V is the USB VBUS supply and VCCE is the

supply to the external device.

Care must be taken with the voltage used to power the photo-LED. It must be the same voltage as that

which the FT232H I/Os are driving to, or the LED’s may be permanently on. Limiting resistors should be

fitted in the lines that drive the diodes. The outputs of the opto-couplers are open-collector and require a

pull-up resistor.

Figure 4.20 Fast Serial Interface Example

FT232H Datasheet(PDF) 40 Page - Future Technology Devices International Ltd.