rtd LAN35M 08 Series, Руководство пользователя

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RTD Embedded Technologies, Inc.
| www.rtd.com 14 LAN35MH08HR & LAN35ME08HR User’s Manual
Table 6: Electrical Characteristics
Symbol Parameter Test Condition Min Typ Max Unit
USB Serial Console (CN19)
V
CCUSB
USB Supply Voltage 4.5 5.0 5.5 V
I
CCUSB
USB Supply Current 10.5 12 mA
External LED Signals (CN26 pins 1-22)
Output Voltage Even-numbered pins 5.0 V
Sink Current Odd numbered pins 24 mA
IEEE1588 Time Tick I/O (CN26 pin 23)
ƒ Frequency Frequency is programmable, 1 Hz – 25M Hz 1 25 M Hz
Clock Duty Cycle Measured at 50% threshold 45 55 %
t
R
, t
F
Rise and Fall time 20% to 80% threshold` 1 ns
Peak-to-Peak Jitter 10MHz output
(
Note: Some frequencies may generate an
additional 4ns of jitter, because frequency is
synthesized based on the internal system clock.
100 ps
V
OH
Output high voltage I
OH
= -12 mA 1.7 V
V
OH
Output high voltage I
OH
= -2mA 2.1 V
V
OL
Output low voltage I
OL
= 12 mA 0.7 V
V
OL
Output low voltage I
OL
= 2 mA 0.4 V
V
IH
Input high voltage 1.85 3.6 V
V
IL
Input low voltage -0.3 0.8 V
I
IH
Input high current 10 μ A
I
IL
Input low current -10 μ A
C
I
Input capacitance 10 pF