FT4232HQ-R FTDI, FT4232HQ-R Datasheet - Page 18

• Manufacturer Part Number: FT4232HQ-R
• Description: USB-UART/MPSSE, 2232, QUAD, 64QFN
• Manufacturer: FTDI

Specifications of FT4232HQ-R

• No. Of Channels: 4
• Data Rate: 480Mbps
• Supply Voltage Range: 1.62V To 1.98V, 2.97V To 3.63V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: QFN
• No. Of Pins: 64
• Svhc: No SVHC
• Bridge Type: USB -
• Rohs Compliant: Yes
• Case Style: QFN
• Max Supply Voltage: 3.63V
• Min Supply Voltage: 2.97V
• Termination Type: SMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Document No.: FT_000060
FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC
Datasheet Version 2.10
Clearance No.: FTDI#78
4.3.2 RS422 Configuration
Figure 4.2 illustrates how the FT4232H can be configured as a dual RS422 interface. The FT4232H can
have all 4 channels connected as RS422, but only channel A and channel C are shown for clarity.
Figure 4.2 Dual RS422 Configuration
In this case both channel A and channel C are configured as UART operating at TTL levels and a level
converter device (full duplex RS485 transceiver) is used to convert the TTL level signals from the
FT4232H to RS422 levels. The PWREN# signal is used to power down the level shifters such that they
operate in a low quiescent current when the USB interface is in suspend mode.
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