Document Reference No.: FT_000054
TTL-232R TTL TO USB SERIAL CONVERTER RANGE OF CABLES Datasheet Version 2.02
Clearance No.: FTDI# 53
7.2 TTL-232R-3V3-2mm Cable Signal Descriptions
Header Pin
Number
Name
Type
Output
KEY
Colour
Blue
Description
Ring Indicator Control Input. When remote wake up is
enabled taking RI# low (20ms active low pulse) can be
used to resume the VMUSIC2 or VDRIVE2 host controller
from suspend. Connected to TXD.
1
RI#
This connection is keyed to connect to the VRDIVE2 or the
VMUSIC2 modules
2
KEY
KEY
3
4
5
6
7
8
RTS#
RXD
Output
Input
Green
Yellow
Orange
Red
Request To Send Control Output / Handshake signal.
Receive Asynchronous Data input.
Transmit Asynchronous Data output.
+5V output,
TXD
Output
Output
Input
VCC
CTS#
GND
Brown
Black
Clear to Send Control input / Handshake signal.
Device ground supply pin.
GND
Table 7.1 TTL-232R-3V3-2mm Cable Signal Descriptions
7.3 TTL-232R-3V3-2mm Electrical Parameters
Parameter Description
Minimum
Typical
Maximum
Units
V
Conditions
Dependant on the USB port
that the TTL-232R-3V3-2mm
is connected to
VCC
Output Power Voltage
4.25
5.0
5.25
Must be less that 2.5mA
during suspend.
IO
T
Output Power Current
-
75
mA
oC
Operating Temperature
Range
-40
+85
Table 7.2 TTL-232R-3V3-2mm I/O Operating Parameters
Parameter Description
Minimum
2.2
Typical
2.8
Maximum
3.2
Units
V
Conditions
I source = 3mA
I sink = 8mA
Voh
Vol
Output Voltage High
Output Voltage Low
0.3
0.4
0.6
V
Vin
Input Switching Threshold
Input Switching Hysteresis
1.0
1.2
1.5
V
VHys
20
25
30
mV
Table 7.3 TTL-232R-3V3-2mm I/O Pin Characteristics
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