TTL-232R-5V-PCB FTDI, TTL-232R-5V-PCB Datasheet - Page 10

• Manufacturer Part Number: TTL-232R-5V-PCB
• Description: Interface Modules & Development Tools USB Embeded Serial Conv 5V PCB Assy
• Manufacturer: FTDI

Specifications of TTL-232R-5V-PCB

• Interface Type: USB, TTL, Serial, UART
• Data Bus Width: Serial
• Operating Supply Voltage: 5 V
• Product: Interface Modules
• For Use With/related Products: FT232R
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: TTL-232R-5V-PCBA

4.1
Table 4.1 TTL-232R-PCB Signal Descriptions
4.2
Selection of whether the UART signal are +3.3V levels or +5V levels is done using resistors. The following
table gives details of what resistors are required for the two different voltage levels. Note that the VCC
output signal will always drive at +5V.
Table 4.2 UART Signal Level Selection
4.3
Table 4.3 TTL-232R-PCB I/O Operating Parameters
Parameter
Table 4.4 TTL-232R-PCB I/O Pin Characteristics (+5V level signals)
Not Fitted
Parameter
Resistor
Name
CTS#
RTS#
Fitted
VHys
GND
VCC
TXD
RXD
Voh
VCC
Vol
Vin
R1
I
T
O
TTL-232R-PCB Signal Descriptions
TTL-232R-PCB +5V/+3.3V Selection
TTL-232R-PCB Electrical Parameters
Not Fitted
Description
Output Voltage High
Output Voltage Low
Input Switching Threshold
Input Switching Hysteresis
Description
Output Power Voltage
Output Power Current
Operating Temperature
Range
Resistor
Output
Output
Output
Fitted
Input
Input
Type
GND
R2
Copyright © 2008 Future Technology Devices International Limited
Description
Device ground supply pin.
Clear to Send Control input / Handshake signal.
+5V output,
Transmit Asynchronous Data output.
Receive Asynchronous Data input.
Request To Send Control Output / Handshake signal.
Description
UART signals are +5V level signals
UART signals are +3.3V level signals
TTL-232R-PCB TTL TO USB SERIAL CONVERTER PCB Datasheet Version 1.01
Minimum
Minimum
4.25
-40
3.2
0.3
1.0
20
-
Typical
Typical
5.0
4.1
0.4
1.2
25
Maximum
Maximum
5.25
+85
4.9
0.6
1.5
75
30
Document Reference No.: FT_000065
Units
Units
mA
mV
o
V
V
V
V
C
Clearance No.: FTDI# 54
Dependant on the USB
port that the TTL-232R-
PCB is connected to
I source = 6mA
I sink = 6mA
Conditions
Conditions
9