rtd CML24BT cpuModules, User Manual

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BDM-610000084 Rev B Chapter 1: Introduction 13
Electrical Characteristics
The table below lists the Electrical Characteristics of the CML24BT. Operating outside of these parameters may
cause permanent damage to the cpuModule.
Table 4 Electrical Characteristics
Symbol Parameter Test Condition Min. Max.
PCI
V
OH
Output Voltage High I
OH
= –0.5 mA 2.9 V 3.3 V
V
OL
Output Voltage Low I
OL
= 6.0 mA 0.0 V 0.55 V
V
IH
Input Voltage High — 1.8 V 5.5 V
V
IL
Input Voltage Low — -0.5 V 0.9 V
I
VIO
Supply Current for
VIO — 500 mA
USB Ports
Ioc Overcurrent Limit Each port 0.5 A 5.0 A
SVGA Port
V
OH
Output Voltage High
HSYNC, VSYNC I
OH
= –8.0 mA 2.4 V 3.3 V
V
OL
Output Voltage Low
HSYNC, VSYNC I
OL
= 8.0 mA 0.0 V 0.5 V
V
OH
Output Voltage High
DDC_* I
OH
= –4.0 mA 2.4 V 3.3 V
V
OL
Output Voltage Low
DDC_* I
OL
= 8.0 mA 0.0 V 0.4 V
V
IH
Input Voltage High
DDC_* — 2.0 V 5.5 V
V
IL
Input Voltage Low
DDC_* — -0.3 V 0.8 V
I
DDCvcc
Supply Current for
DDC Electronics — 500 mA
DisplayPort
I
VCC
Supply Current — 500 mA
Serial Ports - RS-232
V
OH
Output Voltage High R
L
= 3 k 5.0 V 7.0 V
V
OL
Output Voltage Low R
L
= 3 k -7.0 V -5.0 V
V
IH
Input Voltage High — 2.0 V 15 V
V
IL
Input Voltage Low — -15 V 0.6 V
Serial Ports - RS-422/485
V
OD1
Differential Output R
L
= 100 Ohm 2.0 V
V
OD2
Differential Output R
L
= 54 Ohm 1.5 V
V
OC
Common Mode
Output R
L
= 54 or 100
Ohm
3.0 V
V
TH
Differential Input
Threshold -200 mV -50 mV
V
I
Absolute Max Input
Voltage -18 V 18 V